MARK 33 DIGITAL INFORMATION
TRANSFER SYSTEM (DITS)
PART 2
DISCRETE WORD DATA STANDARDS
ARINC SPECIFICATION 429 PART 2-16
PUBLISHED: December 17, 2004
AN
DOCUMENT
Prepared by
AIRLINES ELECTRONIC ENGINEERING COMMITTEE
Published by
AERONAUTICAL RADIO, INC.
2551 RIVA ROAD, ANNAPOLIS, MARYLAND 21401
This document is based on material submitted by various
participants during the drafting process. Neither AEEC nor ARINC
has made any determination whether these materials could be
subject to valid claims of patent, copyright or other proprietary rights
by third parties, and no representation or warranty, express or
implied, is made in this regard. Any use of or reliance on this
document shall constitute an acceptance thereof “as is” and be
subject to this disclaimer.
©2004 BY
AERONAUTICAL RADIO, INC.
2551 RIVA ROAD ANNAPOLIS, MARYLAND
21401-7465 USA
ARINC SPECIFICATION 429P2-16
MARK 33 DIGITAL INFORMATION TRANSFER SYSTEM (DITS)
PART 2
DISCRETE WORD DATA STANDARDS
Published: December 17, 2004
Prepared by the Airlines Electronic Engineering Committee
Specification 429
Adopted by the Airlines Electronic Engineering Committee
July 21, 1977
Summary of Document Supplements
Supplement
Adoption Date
Published
Specification 429-1
April 11, 1978
June 1, 1978
Specification 429-2
December 6, 1978
Specification 429-3
August 31, 1979
Specification 429-4
June 17, 1980
Specification 429-5
March 12, 1981
Specification 429-6
December 9, 1981
January 22, 1982
Specification 429-7
November 4, 1982
January 3, 1983
Specification 429-8
November 4, 1983
December 3, 1984
Specification 429-9
October 11, 1984
April 30, 1985
Specification 429-10
November 7, 1985
November 17, 1986
Specification 429-11
June 15, 1988
July 22, 1988
Specification 429-12
October 25, 1989
July 1, 1990
Specification 429-13
October 8, 1991
December 30, 1991
Specification 429-14
November 4, 1992
Specification 429P2-15
April 18, 1995
Specification 429P2-16
October 27, 2004
March 1, 1979
November 1, 1979
August 1, 1980
April 4, 1981
January 4, 1993
March 6, 1996
December 17, 2004
A description of the changes introduced by this supplement is included on Goldenrod paper at the end of this document.
FOREWORD
Aeronautical Radio, Inc., the AEEC, and ARINC Standards
Aeronautical Radio, Inc. (ARINC) was incorporated in 1929 by four fledgling airlines in the
United States as a privately-owned company dedicated to serving the communications needs of
the air transport industry. Today, the major U.S. airlines remain the Company’s principal
shareholders. Other shareholders include a number of non-U.S. airlines and other aircraft
operators.
ARINC sponsors aviation industry committees and participates in related industry activities that
benefit aviation at large by providing technical leadership and guidance and frequency
management. These activities directly support airline goals: promote safety, efficiency,
regularity, and cost-effectiveness in aircraft operations.
The Airlines Electronic Engineering Committee (AEEC) is an international body of airline
technical professionals that leads the development of technical standards for airborne electronic
equipment-including avionics and in-flight entertainment equipment-used in commercial,
military, and business aviation. The AEEC establishes consensus-based, voluntary form, fit,
function, and interface standards that are published by ARINC and are known as ARINC
Standards. The use of ARINC Standards results in substantial benefits to airlines by allowing
avionics interchangeability and commonality and reducing avionics cost by promoting
competition.
There are three classes of ARINC Standards:
a) ARINC Characteristics – Define the form, fit, function, and interfaces of avionics and
other airline electronic equipment. ARINC Characteristics indicate to prospective
manufacturers of airline electronic equipment the considered and coordinated
opinion of the airline technical community concerning the requisites of new
equipment including standardized physical and electrical characteristics to foster
interchangeability and competition.
b) ARINC Specifications – Are principally used to define either the physical packaging
or mounting of avionics equipment, data communication standards, or a high-level
computer language.
c) ARINC Reports – Provide guidelines or general information found by the airlines to
be good practices, often related to avionics maintenance and support.
The release of an ARINC Standard does not obligate any airline or ARINC to purchase
equipment so described, nor does it establish or indicate recognition or the existence of an
operational requirement for such equipment, nor does it constitute endorsement of any
manufacturer’s product designed or built to meet the ARINC Standard.
In order to facilitate the continuous product improvement of this ARINC Standard, two items are
included in the back of this volume:
An Errata Report solicits any corrections to the text or diagrams in this ARINC Standard.
An ARINC IA Project Initiation/Modification (APIM) form solicits any recommendations for
addition of substantive material to this volume which would be the subject of a new Supplement.
ii
ARINC SPECIFICATION 429
TABLE OF CONTENTS
1.0
INTRODUCTION ......................................................................................................... 1
1.1
Purpose of ARINC Specification 429 ........................................................................... 1
1.1.1
1.2
Relationship to Other Documents ........................................................................... 1
Organization of ARINC Specification 429 .................................................................... 1
Table 1 List of Discrete Labels by Equipment Identifier ............................................................ 2
Table 2 List of Discrete Labels by Octal Number.................................................................... 11
DATA STANDARDS
........................................................................................................... 20
ARINC IA Project Initiation/Modification (APIM) Guidelines for Submittal ...............................End
ARINC Standard – Errata Report............................................................................................End
iii
ARINC SPECIFICATION 429 PART 2 – Page 1
1.0 INTRODUCTION
1.1 Purpose of ARINC Specification 429
ARINC Specification 429 defines the air transport industry’s standard for the transfer of digital data between avionics
systems elements. Adherence to these standards is desired for all inter-system communications in which the system line
replaceable units are defined as “unit interchangeable” in the relevant ARINC characteristics. Their use for intra-system
interchangeability is not essential, although it is desired.
1.1.1 Relationship to Other Documents
The material in this Specification is intended to complement other ARINC Characteristics, Specifications and Reports
written for avionics. It is also the intent of this document to encourage the use of any standards of good practice, that
have been developed by the government, the military and other industry groups, provided they are applicable to airline
electronic equipment.
When ARINC 429 was originally developed, all ARINC 429 discrete words were defined in this document. However,
with the proliferation of ARINC 429 discrete words, the associated ARINC Characteristic and Specification have been
maintaining their own discrete word definitions.
Tables 1 and 2 to this document have been developed to aid the reader in reviewing the discrete words. Table 1 is sorted
by Equipment Identifier and Table 2 is sorted by octal label number. These tables summarize all the discrete words, and
refers the reader to the location where the bit definition of that discrete word is maintained.
There are numerous cases where a discrete label has been assigned but no source documentation has been identified for
the bit description. If this is the case, the source location column will be blank.
1.2 Organization of ARINC Specification 429
ARINC Specification 429 was originally published in a single volume until version 14 (429-14) was released. The size
of the document and the need for improved organization dictated the division of the document into three parts. Those
three parts include:
Part 1, “Functional Description, Electrical Interface, Label Assignments and Word Formats
Part 2, “Discrete Word Data Formats
Part 3, “File Data Transfer Techniques”
Part 1 provides the basic description of the functions and the supporting physical and electrical interfaces for the data
transfer system. Data word formats, standard label and address assignments, and application examples are defined. Part
2 lists discrete word bit assignments in label order. Part 3 describes protocols and message definitions for data
transferred in large blocks and file format. For convenience of the user, the section and attachment numbering has been
retained for the material moved from the original Specification to Part 3.
Updates to each part of future releases of ARINC 429 will be independent of the other parts to accommodate timely
revisions as industry needs dictate. The dash numbers for each new Part will not be synchronized with the other Parts as
time passes. Users of ARINC Specification 429 should ensure that the latest version of each Part is used when designing
or procuring equipment
ARINC SPECIFICATION 429 PART 2 – Page 2
DATA STANDARDS
Table 1 List of Discrete Labels by Equipment Identifier
Code No.
(Octal)
111
266
270
272
273
274
275
300
301
302
303
304
305
306
307
207
270
271
272
275
276
301
302
303
354
357
272
273
274
275
350
270
277
350
270
271
272
270
271
350
351
075
076
077
242
244
246
247
274
124
270
Eqpt. ID
(Hex)
001
001
001
001
001
001
001
001
001
001
001
001
001
001
001
002
002
002
002
002
002
002
002
002
002
002
003
003
003
003
003
004
004
004
005
005
005
006
006
006
006
008
008
008
009
009
009
009
00A
00B
00B
Parameter
Test Word A
Test Word B
Discrete Data #1
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
HF Control Word
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #6
Discrete Data #7
Application Dependent
Application Dependent
Application Dependent
Maintenance Data #5
ISO Alphabet #5 Message
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Maintenance Data #1
Discrete Data #1
IRS Maintenance Discrete
IRS Maintenance Discrete
Discrete Data #1
AHRS Discrete
Air Data AHARS
Discrete Data #1
Discrete Data #2
Maintenance Data #1
Maintenance Data #2
Maximum Hazard Alert Level Output
Hazard Azimuth Output
Hazard Azimuth Output
Ground Station ID (Word #1)
Ground Station ID (Word #2)
DME Ground Station Ident Word #1
DME Ground Station Ident Word #1
Discrete Data #5
Digital Time Mark
Discrete Data #1
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 708A
ARINC 708A
ARINC 708A
ARINC 709
ARINC 709
ARINC 743A
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 3
DATA STANDARDS
Code No.
(Octal)
273
350
351
355
242
244
263
264
242
244
244
254
255
357
271
272
273
274
275
276
277
350
227
350
270
271
272
300
301
302
303
304
305
306
307
350
351
352
353
354
270
155
156
160
161
270
271
272
273
274
275
276
350
Eqpt. ID
(Hex)
00B
00B
00B
00B
010
010
010
010
011
011
012
012
012
017
018
018
018
018
018
018
018
018
019
019
01A
01A
01A
01A
01A
01A
01A
01A
01A
01A
01A
01A
01A
01A
01A
01A
01B
01C
01C
01C
01C
01C
01C
01C
01C
01C
01C
01C
01C
Parameter
GNSS Sensor Status
GPS Test Word (manufacturer specific)
SRU Test Word (manufacturer specific)
GNSS Fault Summary
Ground Station ID (Word #1)
Ground Station ID (Word #2)
ILS Ground Station Ident Word #1
ILS Ground Station Ident Word #2
Ground Station ID (Word #1)
VOR Ground Station Ident Word #2
Ground Station ID (Word #2)
ADF Ground Station Ident Word #1
ADF Ground Station Ident Word #2
ISO Alphabet #5 Message
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Discrete Data #7
Discrete Data #8
Maintenance Data #1
CFDS Bite Command Summary for HFDR
CFDS Bite Fault Summary Word for HFDR
Discrete Data #1
Discrete Data #2
Discrete Data #3
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Maintenance Data #1
Maintenance Data #2
Maintenance Data #3
Maintenance Data #4
Maintenance Data #5
Discrete Data #1
Maintenance Data #6
Maintenance Data #7
Maintenance Data #9
Maintenance Data #10
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Discrete Data #7
Maintenance Data #1
Source Document
ARINC 743A
ARINC 743A
ARINC 710
ARINC 710
ARINC 711
ARINC 711
ARINC 712
ARINC 712
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 753
ARINC 753
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 4
DATA STANDARDS
Code No.
(Octal)
351
352
353
354
111
266
270
271
031
270
350
270
350
351
357
145
146
147
155
160
161
270
272
273
274
275
276
350
351
352
353
157
161
256
257
270
350
355
145
146
147
155
156
270
271
272
273
274
275
276
350
351
275
Eqpt. ID
(Hex)
01C
01C
01C
01C
01D
01D
01E
01E
020
023
023
024
024
024
024
025
025
025
025
025
025
025
025
025
025
025
025
025
025
025
025
027
027
027
027
027
027
027
029
029
029
029
029
029
029
029
029
029
029
029
029
029
02B
Parameter
Maintenance Data #2
Maintenance Data #2
Maintenance Data #4
Maintenance Data #5
Test Word A
Test Word B
Discrete Data #1
Discrete Data #2
Beacon Transponder Code
GPWS Discrete
Maintenance Data #1
MU Output Data Word, Communication Link Status
MU Output Data Word Failure Status
MU Output Data Word Failure Status
ISO Alphabet #5 Message
Discrete Status 2 EFIS
Discrete Status 3 EFIS
Discrete Status 4 EFIS
Discrete Status 5 EFIS
Discrete Status 6 EFIS
Discrete Status 7 EFIS
Discrete Data #1
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Discrete Status 8 EFIS
Maintenance Data #1
Maintenance Data #2
Maintenance Data #2
Maintenance Data #4
MLS Dataword 2
MLS Data word 4
MLS Ground Station Ident Word #1
MLS Ground Station Ident Word #2
Discrete Data #1
Maintenance Data #1
MLS Maintenance Data
Discrete Status 2 EFIS
Discrete Data #9
Discrete Data #10
Discrete #1
Discrete #12
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Discrete Data #7
Maintenance Data #1
Maintenance Data #2
Discrete Data #6
Source Document
ARINC 429 P2
ARINC 724B
ARINC 724B
ARINC 724B
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 727
ARINC 727
ARINC 727
ARINC 727
ARINC 727
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 5
DATA STANDARDS
Code No.
(Octal)
241
351
352
270
271
272
273
274
275
276
350
351
352
353
354
377
270
271
351
350
155
156
157
160
161
270
271
273
274
270
271
272
273
274
275
350
357
270
357
270
271
272
275
277
350
351
353
355
270
270
271
272
270
Eqpt. ID
(Hex)
02C
02E
02E
02F
02F
02F
02F
02F
02F
02F
02F
02F
02F
02F
02F
030
031
031
031
032
033
033
033
033
033
033
033
033
033
035
035
035
035
035
035
035
035
037
037
038
038
038
038
038
038
038
038
038
039
03A
03A
03A
03B
Parameter
Reserved (Special Use)
Maintenance Data #2
Maintenance Data #2
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Discrete Data #7
Maintenance Data #1
Maintenance Data #2
Maintenance Data #2
Maintenance Data #4
Maintenance Data #5
Equipment Identification
Discrete Data #1
Discrete Data #2
Maintenance Data #2
Maintenance Data #1
Maintenance Data #6
Maintenance Data #7
Maintenance Data #8
Maintenance Data #9
Maintenance Data #10
Discrete Data #1
Discrete Data #2
Discrete Data #4
Discrete Data #5
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Maintenance Data #1
TCAS Intruder Data File
Discrete Data #1
ISO Alphabet #5 Message
Discrete Data #1
Discrete Data #2
Discrete Data #3
IR Discrete Word #2
IR Test
IRS Maintenance Word #1
IRS Maintenance Word #2
IRS Maintenance Word #3
IRS Maintenance Word #4
MCDU Normal Discrete Word
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #1
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 738A
ARINC 738A
ARINC 738A
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 6
DATA STANDARDS
Code No.
(Octal)
271
272
273
274
275
270
300
350
353
270
350
270
271
272
273
274
275
276
350
351
352
353
354
350
270
271
270
156
157
160
161
256
275
344
345
350
351
352
353
354
355
357
270
276
350
227
270
272
350
232
243
254
255
Eqpt. ID
(Hex)
03B
03B
03B
03B
03B
03D
03D
03D
03D
03E
03E
03F
03F
03F
03F
03F
03F
03F
03F
03F
03F
03F
03F
040
041
041
04A
04D
04D
04D
04D
04D
04D
04D
04D
04D
04D
04D
04D
04D
04D
04D
050
050
050
053
053
053
053
055
055
055
055
Parameter
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Discrete Data #1
Application Dependent
Maintenance Data #1
Maintenance Data #4
Discrete Data #1
Maintenance Data #1
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Discrete Data #7
Maintenance Data #1
Maintenance Data #2
Maintenance Data #2
Maintenance Data #4
Maintenance Data #5
Maintenance Data #1
SDU To ACARS MU/CMU Status Word
SDU To ACARS MU/CMU Join/Leave Message
Discrete Data #1
L Tank Faults
R Tank Faults
C Tank Fault
A Tank Fault
Fuel Discretes
Discrete Data #6
Fuel Discretes
Discretes Status 1 and 3
Maintenance Data FQIS 1-3
Maintenance Data FQIS 1&3
Maintenance Data FQIS 1-4
Maintenance Data FQIS 1-4
FQIS Tank ID
Maintenance Data FQIS 2-4
Maintenance Data FQIS 2-3
VDR Status Word
VDR Mode
VDR Fault Summary Word
CFDS Bite Command Summary for HFDR
HFDL Status Word
HFDL Slave (Disc Data 2)
CFDS Bite Fault Summary Word for HFDR
GLS Airport ID
GLS Runway Selection
GBAS ID
GBAS ID/ Airport ID
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 740
ARINC 741
ARINC 741
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 750
ARINC 750
ARINC 750
ARINC 753
ARINC 753
ARINC 753
ARINC 753
ARINC 755
ARINC 755
ARINC 755
ARINC 755
ARINC SPECIFICATION 429 PART 2 – Page 7
DATA STANDARDS
Code No.
(Octal)
256
263
264
270
271
273
350
351
352
270
271
272
275
276
301
302
303
354
357
270
276
350
351
352
151
155
270
271
272
273
274
275
276
357
270
270
270
271
272
275
276
301
302
303
354
020
021
022
023
024
145
146
147
Eqpt. ID
(Hex)
055
055
055
055
055
055
055
055
055
056
056
056
056
056
056
056
056
056
056
027
024
024
024
024
05A
05A
05A
05A
05A
05A
05A
05A
05A
05A
060
060
060
060
060
060
060
060
060
060
060
06D
06D
06D
06D
06D
0A1
0A1
0A1
Parameter
MLS Station ID #1
Ground Station/Approach
Ground Station/Approach
MLS Discrete
MMR Discrete
GNSS Status
ILS Maintenance Word
MMR Maintenance Word
MLS Bite Status
Status Discretes
Discrete Data #2
Discrete Data #3
Discrete Data #6
Discrete Data #7
Application Dependent
Application Dependent
Application Dependent
Maintenance Data #5
ISO Alphabet #5 Message
Output Status Word #1
Output Status Word #2
Maintenance Word #1
Maintenance Word #2
Maintenance Word
LB/KG Control Word
FQIC
Discrete Data #1
Fuel Density
FQS Fuel Density
FQS Right Wing (A320)
FQS (A320)
FQS – Left Wing (A320)
Discrete Data #7
Part Number (Manufacturer - Specific)
Intent Status
Status Discretes
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #6
Discrete Data #7
Application Dependent
Application Dependent
Application Dependent
Maintenance Data #5
Landing Gear Position Infor & System Status
Landing Gear Position Infor & System Status
Landing Gear Position Infor & System Status
Landing Gear Position Infor & System Status
Landing Gear Position Infor & System Status
AFS DFDR Discretes #1
AFS DFDR Discretes #2
AFS DFDR Discretes #3
Source Document
ARINC 755
ARINC 755
ARINC 755
ARINC 755
ARINC 755
ARINC 755
ARINC 755
ARINC 755
ARINC 755
ARINC 755
ARINC 758
ARINC 758
ARINC 758
ARINC 758
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 8
DATA STANDARDS
Code No.
(Octal)
270
271
270
271
270
271
272
013
016
031
207
155
156
157
160
276
354
270
271
272
273
274
005
006
155
156
157
160
161
270
271
272
273
274
275
350
351
352
353
354
155
156
157
160
161
270
271
272
273
274
275
350
351
Eqpt. ID
(Hex)
0A2
0A2
0A8
0A8
0AD
0AD
0AD
0B8
0B8
0B8
0B9
0BB
0BB
0BB
0BB
0BB
0BB
0C5
0C5
0C5
0C5
0C5
0D0
0D0
10A
10A
10A
10A
10A
10A
10A
10A
10A
10A
10A
10A
10A
10A
10A
10A
10B
10B
10B
10B
10B
10B
10B
10B
10B
10B
10B
10B
10B
Parameter
Discrete Data #1
Discrete Data #2
Discrete Data #1
Discrete Data #2
Discrete Data #1
Discrete Data #2
Discrete Data #3
Control Word for TCAS/Mode S
Control Word for TCAS/Mode S
Beacon Transponder Code
HF Control Word
Maintenance Data #6
Maintenance Data #7
Maintenance Data #8
Maintenance Data #9
Discrete Data #7
Maintenance Data #5
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Engine Discrete
Engine Discrete
Maintenance Data #6
Maintenance Data #7
Maintenance Data #8
Maintenance Data #9
Maintenance Data #10
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Maintenance Data #1
Maintenance Data #2
Maintenance Data #2
Maintenance Data #4
Maintenance Data #5
Maintenance Data #6
Maintenance Data #7
Maintenance Data #8
Maintenance Data #9
Maintenance Data #10
Discrete Data #1
Discrete Data #2
Discrete Data #3
Discrete Data #4
Discrete Data #5
Discrete Data #6
Maintenance Data #1
Maintenance Data #2
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 9
DATA STANDARDS
Code No.
(Octal)
Eqpt. ID
(Hex)
352
353
354
242
140
141
142
143
144
145
146
147
150
151
10B
10B
10B
112
114
114
114
114
114
114
114
114
114
114
152
114
153
154
155
156
160
161
162
163
164
165
166
167
170
270
271
272
273
274
275
276
277
350
351
352
353
270
350
270
271
272
350
351
270
271
270
271
272
350
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
115
115
140
140
140
140
140
142
142
144
144
144
144
Parameter
Maintenance Data #2
Maintenance Data #4
Maintenance Data #5
Ground Station ID (Word #1)
Pump Contactor States
Pump Contactor and Pushbutton States
Pump Push Button and LP Switch State
Pump LP Switch State and FCMC Commands
Valve Feedback
Valve Feedback
Valve Feedback
Valve Feedback
FCMC Valve Commands
FCMC Valve Commands
Overhead Panel Switch/Pushbutton & Refuel Panel
Battery Power Supply Switch States
Level States
Level States and Low Warning and Transfer Indications
XFR Pump Faults & Wing Imbalance Warning
Refuel Panel Switch States
Valve Feedback
Indicated Pump Status
Indicated Pump Status
Indicated Pump Status
Indicated Pump Status
Indicated Valve Status
Indicated Valve Status
Indicated Valve Status
Wing Imbalance and FQI Failure Warning
Unusable, and Empty Warning
Fuel Transfer Indication
Fuel Transfer Indication
Memos and Status
Fuel Transfer Indications
Miscellaneous Warning
Discrete Data #7
Fuel Transfer and CG Status
Fuel Unit Management System Discrete (A330/A340)
Fuel Unit Management System Discrete (A330/A340)
Fuel Unit Management System Discrete (A330/A340)
Fuel Management System Discrete (A330/A340)
Stored TACAN Control Word
Maintenance Data #1
Discrete Data #1
Discrete Data #2
Discrete Data #3
Maintenance Data #1
Maintenance Data #2
Aircraft Category (Disc Data 1)
Altitude Filter Limits (Disc Data 2)
Display Mode
Altitude Filter Setting
Target Selection Word
CDTI Fault Summary Word
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 10
DATA STANDARDS
Code No.
(Octal)
350
350
214
216
277
355
377
Eqpt. ID
(Hex)
241
341
XXX
XXX
XXX
XXX
XXX
Parameter
Maintenance Data #1
Maintenance Data #1
ICAO Aircraft Address (Part 1)
ICAO Aircraft Address (Part 2)
General Test Word
Maintenance ISO #5 Message
Equipment Identification
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 11
DATA STANDARDS
Table 2 List of Discrete Labels by Octal Number
Code No.
(Octal)
Eqpt. ID
(Hex)
005
006
013
016
020
021
022
023
024
031
031
075
076
077
111
111
124
140
141
142
143
144
145
145
145
145
146
146
146
146
147
147
147
147
150
151
151
0D0
0D0
0B8
0B8
06D
06D
06D
06D
06D
020
0B8
008
008
008
001
01D
00B
114
114
114
114
114
025
029
0A1
114
025
029
0A1
114
025
029
0A1
114
114
05A
114
152
114
153
154
155
155
155
155
155
155
155
155
155
156
156
114
114
01C
025
029
033
05A
0BB
10A
10B
114
01C
029
Parameter
Engine Discrete
Engine Discrete
Control Word for TCAS/Mode S
Control Word for TCAS/Mode S
Landing Gear Position Infor & System Status
Landing Gear Position Infor & System Status
Landing Gear Position Infor & System Status
Landing Gear Position Infor & System Status
Landing Gear Position Infor & System Status
Beacon Transponder Code
Beacon Transponder Code
Maximum Hazard Alert Level Output
Hazard Azimuth Output
Hazard Azimuth Output
Test Word A
Test Word A
Digital Time Mark
Pump Contactor States
Pump Contactor and Pushbutton States
Pump Push Button and LP Switch State
Pump LP Switch State and FCMC Commands
Valve Feedback
Discrete Status 2 EFIS
Discrete Status 2 EFIS
AFS DFDR Discretes #1
Valve Feedback
Discrete Status 3 EFIS
Discrete Data #9
AFS DFDR Discretes #2
Valve Feedback
Discrete Status 4 EFIS
Discrete Data #10
AFS DFDR Discretes #3
Valve Feedback
FCMC Valve Commands
LB/KG Control Word
FCMC Valve Commands
Overhead Panel Switch/Pushbutton & Refuel Panel
Battery Power Supply Switch States
Level States
Level States and Low Warning and Transfer Indications
Maintenance Data #6
Discrete Status 5 EFIS
Discrete #1
Maintenance Data #6
FQIC
Maintenance Data #6
Maintenance Data #6
Maintenance Data #6
XFR Pump Faults & Wing Imbalance Warning
Maintenance Data #7
Discrete #12
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 708A
ARINC 708A
ARINC 708A
ARINC 743A
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 12
DATA STANDARDS
Code No.
(Octal)
156
156
156
156
156
156
157
157
157
157
157
157
160
160
160
160
160
160
160
160
161
161
161
161
161
161
161
161
162
163
164
165
166
167
170
207
207
214
216
227
227
232
241
242
242
242
242
243
244
244
244
244
246
247
Eqpt. ID
(Hex)
033
04D
0BB
10A
10B
114
027
033
04D
0BB
10A
10B
01C
025
033
04D
0BB
10A
10B
114
01C
025
027
033
04D
10A
10B
114
114
114
114
114
114
114
114
002
0B9
XXX
XXX
019
053
055
02C
009
010
011
112
055
009
010
011
012
009
009
Parameter
Maintenance Data #7
L Tank Faults
Maintenance Data #7
Maintenance Data #7
Maintenance Data #7
Refuel Panel Switch States
MLS Dataword 2
Maintenance Data #8
R Tank Faults
Maintenance Data #8
Maintenance Data #8
Maintenance Data #8
Maintenance Data #9
Discrete Status 6 EFIS
Maintenance Data #9
C Tank Fault
Maintenance Data #9
Maintenance Data #9
Maintenance Data #9
Valve Feedback
Maintenance Data #10
Discrete Status 7 EFIS
MLS Data word 4
Maintenance Data #10
A Tank Fault
Maintenance Data #10
Maintenance Data #10
Indicated Pump Status
Indicated Pump Status
Indicated Pump Status
Indicated Pump Status
Indicated Valve Status
Indicated Valve Status
Indicated Valve Status
Wing Imbalance and FQI Failure Warning
HF Control Word
HF Control Word
ICAO Aircraft Address (Part 1)
ICAO Aircraft Address (Part 2)
CFDS Bite Command Summary for HFDR
CFDS Bite Command Summary for HFDR
GLS Airport ID
Reserved (Special Use)
Ground Station ID (Word #1)
Ground Station ID (Word #1)
Ground Station ID (Word #1)
Ground Station ID (Word #1)
GLS Runway Selection
Ground Station ID (Word #2)
Ground Station ID (Word #2)
VOR Ground Station Ident Word #2
Ground Station ID (Word #2)
DME Ground Station Ident Word #1
DME Ground Station Ident Word #1
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 727
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 727
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 753
ARINC 753
ARINC 755
ARINC 711
ARINC 755
ARINC 711
ARINC 709
ARINC 709
ARINC SPECIFICATION 429 PART 2 – Page 13
DATA STANDARDS
Code No.
(Octal)
254
254
255
255
256
256
256
257
263
263
264
264
266
266
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
270
Eqpt. ID
(Hex)
012
055
012
055
027
04D
055
027
010
055
010
055
001
01D
001
002
004
005
006
00B
01A
01B
01C
01E
023
024
025
027
029
02F
031
033
035
037
038
039
03A
03B
03D
03E
03F
041
04A
050
053
055
056
027
05A
060
060
060
0A2
Parameter
ADF Ground Station Ident Word #1
GBAS ID
ADF Ground Station Ident Word #2
GBAS ID/ Airport ID
MLS Ground Station Ident Word #1
Fuel Discretes
MLS Station ID #1
MLS Ground Station Ident Word #2
ILS Ground Station Ident Word #1
Ground Station/Approach
ILS Ground Station Ident Word #2
Ground Station/Approach
Test Word B
Test Word B
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
GPWS Discrete
MU Output Data Word, Communication Link Status
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
MCDU Normal Discrete Word
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
SDU To ACARS MU/CMU Status Word
Discrete Data #1
VDR Status Word
HFDL Status Word
MLS Discrete
Status Discretes
Output Status Word #1
Discrete Data #1
Intent Status
Status Discretes
Discrete Data #1
Discrete Data #1
Source Document
ARINC 712
ARINC 755
ARINC 712
ARINC 755
ARINC 727
ARINC 429 P2
ARINC 755
ARINC 727
ARINC 710
ARINC 755
ARINC 710
ARINC 755
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 724B
ARINC 727
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 738A
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 741
ARINC 750
ARINC 753
ARINC 755
ARINC 755
ARINC 758
ARINC SPECIFICATION 429 PART 2 – Page 14
DATA STANDARDS
Code No.
(Octal)
270
270
270
270
270
270
270
270
270
270
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
271
272
272
272
272
272
272
272
272
272
272
272
272
Eqpt. ID
(Hex)
0A8
0AD
0C5
10A
10B
114
115
140
142
144
002
005
006
018
01A
01C
01E
029
02F
031
033
035
038
03A
03B
03F
041
055
056
05A
060
0A2
0A8
0AD
0C5
10A
10B
114
140
142
144
001
002
003
005
018
01A
01C
025
029
02F
035
038
Parameter
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Discrete Data #1
Unusable, and Empty Warning
Stored TACAN Control Word
Discrete Data #1
Aircraft Category (Disc Data 1)
Display Mode
Discrete Data #2
AHRS Discrete
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
SDU To ACARS MU/CMU Join/Leave Message
MMR Discrete
Discrete Data #2
Fuel Density
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Discrete Data #2
Fuel Transfer Indication
Discrete Data #2
Altitude Filter Limits (Disc Data 2)
Altitude Filter Setting
Discrete Data #3
Discrete Data #3
Discrete Data #3
Air Data AHARS
Discrete Data #3
Discrete Data #3
Discrete Data #3
Discrete Data #3
Discrete Data #3
Discrete Data #3
Discrete Data #3
Discrete Data #3
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 738A
ARINC 429 P2
ARINC 429 P2
ARINC 741
ARINC 755
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 738A
ARINC SPECIFICATION 429 PART 2 – Page 15
DATA STANDARDS
Code No.
(Octal)
272
272
272
272
272
272
272
272
272
272
272
272
272
272
273
273
273
273
273
273
273
273
273
273
273
273
273
273
273
273
273
273
274
274
274
274
274
274
274
274
274
274
274
274
274
274
274
274
274
275
275
275
275
Eqpt. ID
(Hex)
03A
03B
03F
053
056
05A
060
0AD
0C5
10A
10B
114
140
144
001
003
00B
018
01C
025
029
02F
033
035
03B
03F
055
05A
0C5
10A
10B
114
001
003
00A
018
01C
025
029
02F
033
035
03B
03F
05A
0C5
10A
10B
114
001
002
003
018
Parameter
Discrete Data #3
Discrete Data #3
Discrete Data #3
HFDL Slave (Disc Data 2)
Discrete Data #3
FQS Fuel Density
Discrete Data #3
Discrete Data #3
Discrete Data #3
Discrete Data #3
Discrete Data #3
Fuel Transfer Indication
Discrete Data #3
Target Selection Word
Discrete Data #4
Discrete Data #4
GNSS Sensor Status
Discrete Data #4
Discrete Data #4
Discrete Data #4
Discrete Data #4
Discrete Data #4
Discrete Data #4
Discrete Data #4
Discrete Data #4
Discrete Data #4
GNSS Status
FQS Right Wing (A320)
Discrete Data #4
Discrete Data #4
Discrete Data #4
Memos and Status
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
Discrete Data #5
FQS (A320)
Discrete Data #5
Discrete Data #5
Discrete Data #5
Fuel Transfer Indications
Discrete Data #6
Discrete Data #6
Discrete Data #6
Discrete Data #6
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 753
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 743A
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 755
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 16
DATA STANDARDS
Code No.
(Octal)
275
275
275
275
275
275
275
275
275
275
275
275
275
275
275
275
276
276
276
276
276
276
276
276
276
276
276
276
276
276
277
277
277
277
277
300
300
300
301
301
301
301
301
302
302
302
302
302
303
303
303
303
303
Eqpt. ID
(Hex)
01C
025
029
02B
02F
035
038
03B
03F
04D
056
05A
060
10A
10B
114
002
018
01C
025
029
02F
03F
050
056
024
05A
060
0BB
114
004
018
038
114
XXX
001
01A
03D
001
002
01A
056
060
001
002
01A
056
060
001
002
01A
056
060
Parameter
Discrete Data #6
Discrete Data #6
Discrete Data #6
Discrete Data #6
Discrete Data #6
Discrete Data #6
IR Discrete Word #2
Discrete Data #6
Discrete Data #6
Discrete Data #6
Discrete Data #6
FQS – Left Wing (A320)
Discrete Data #6
Discrete Data #6
Discrete Data #6
Miscellaneous Warning
Discrete Data #7
Discrete Data #7
Discrete Data #7
Discrete Status 8 EFIS
Discrete Data #7
Discrete Data #7
Discrete Data #7
VDR Mode
Discrete Data #7
Output Status Word #2
Discrete Data #7
Discrete Data #7
Discrete Data #7
Discrete Data #7
IRS Maintenance Discrete
Discrete Data #8
IR Test
Fuel Transfer and CG Status
General Test Word
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 750
ARINC 758
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 17
DATA STANDARDS
Code No.
(Octal)
304
304
305
305
306
306
307
307
344
345
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
350
351
351
351
351
351
351
351
351
351
Eqpt. ID
(Hex)
001
01A
001
01A
001
01A
001
01A
04D
04D
003
004
006
00B
018
019
01A
01C
023
024
025
027
029
02F
032
035
038
03D
03E
03F
040
04D
050
053
055
024
10A
10B
114
115
140
144
241
341
006
00B
01A
01C
024
025
029
02E
02F
Parameter
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Application Dependent
Fuel Discretes
Discretes Status 1 and 3
Maintenance Data #1
IRS Maintenance Discrete
Maintenance Data #1
GPS Test Word (manufacturer specific)
Maintenance Data #1
CFDS Bite Fault Summary Word for HFDR
Maintenance Data #1
Maintenance Data #1
Maintenance Data #1
MU Output Data Word Failure Status
Maintenance Data #1
Maintenance Data #1
Maintenance Data #1
Maintenance Data #1
Maintenance Data #1
Maintenance Data #1
IRS Maintenance Word #1
Maintenance Data #1
Maintenance Data #1
Maintenance Data #1
Maintenance Data #1
Maintenance Data FQIS 1-3
VDR Fault Summary Word
CFDS Bite Fault Summary Word for HFDR
ILS Maintenance Word
Maintenance Word #1
Maintenance Data #1
Maintenance Data #1
Fuel Unit Management System Discrete (A330/A340)
Maintenance Data #1
Maintenance Data #1
CDTI Fault Summary Word
Maintenance Data #1
Maintenance Data #1
Maintenance Data #2
SRU Test Word (manufacturer specific)
Maintenance Data #2
Maintenance Data #2
MU Output Data Word Failure Status
Maintenance Data #2
Maintenance Data #2
Maintenance Data #2
Maintenance Data #2
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 753
ARINC 429 P2
ARINC 724B
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 740
ARINC 429 P2
ARINC 750
ARINC 753
ARINC 755
ARINC 758
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 724B
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 18
DATA STANDARDS
Code No.
(Octal)
351
351
351
351
351
351
351
351
351
351
352
352
352
352
352
352
352
352
352
352
352
352
353
353
353
353
353
353
353
353
353
353
353
354
354
354
354
354
354
354
354
354
354
354
355
355
355
355
355
357
357
357
357
Eqpt. ID
(Hex)
031
038
03F
04D
055
024
10A
10B
114
140
01A
01C
025
02E
02F
03F
04D
055
024
10A
10B
114
01A
01C
025
02F
038
03D
03F
04D
10A
10B
114
002
01A
01C
02F
03F
04D
056
060
0BB
10A
10B
00B
027
038
04D
XXX
002
017
024
035
Parameter
Maintenance Data #2
IRS Maintenance Word #2
Maintenance Data #2
Maintenance Data FQIS 1&3
MMR Maintenance Word
Maintenance Word #2
Maintenance Data #2
Maintenance Data #2
Fuel Unit Management System Discrete (A330/A340)
Maintenance Data #2
Maintenance Data #3
Maintenance Data #2
Maintenance Data #2
Maintenance Data #2
Maintenance Data #2
Maintenance Data #2
Maintenance Data FQIS 1-4
MLS Bite Status
Maintenance Word
Maintenance Data #2
Maintenance Data #2
Fuel Unit Management System Discrete (A330/A340)
Maintenance Data #4
Maintenance Data #4
Maintenance Data #4
Maintenance Data #4
IRS Maintenance Word #3
Maintenance Data #4
Maintenance Data #4
Maintenance Data FQIS 1-4
Maintenance Data #4
Maintenance Data #4
Fuel Management System Discrete (A330/A340)
Maintenance Data #5
Maintenance Data #5
Maintenance Data #5
Maintenance Data #5
Maintenance Data #5
FQIS Tank ID
Maintenance Data #5
Maintenance Data #5
Maintenance Data #5
Maintenance Data #5
Maintenance Data #5
GNSS Fault Summary
MLS Maintenance Data
IRS Maintenance Word #4
Maintenance Data FQIS 2-4
Maintenance ISO #5 Message
ISO Alphabet #5 Message
ISO Alphabet #5 Message
ISO Alphabet #5 Message
TCAS Intruder Data File
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC 755
ARINC 758
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 755
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 429 P2
ARINC 743A
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 19
DATA STANDARDS
Code No.
(Octal)
357
357
357
357
377
377
Eqpt. ID
(Hex)
037
04D
056
05A
030
XXX
Parameter
ISO Alphabet #5 Message
Maintenance Data FQIS 2-3
ISO Alphabet #5 Message
Part Number (Manufacturer - Specific)
Equipment Identification
Equipment Identification
Source Document
ARINC 429 P2
ARINC 429 P2
ARINC SPECIFICATION 429 PART 2 – Page 20
DATA STANDARDS
Label 005 0D0 – Engine Discretes (737)
Bit
Coding
Bit Status
Function
1
Label 1st digit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 2 digit
0
Label 3rd digit
X
5
X
X
SDI
SDI
PAD
PAD
Failure to clear serial data interrupt
ARINC received fail
PROM checksum fail
User RAM fail
NV RAM address fail
NV RAM bit fail
RTC fail
Microprocessor fail
Battery low
NV RAM corrupt
Not used
Not used
Not used
Interrogate activated
Erase activated
BIT activated
SSM
SSM
SSM
Parity (Odd)
Note:
[1] SDI
Bits
10
0
0
1
1
0
nd
Notes
0
X
X
X
X
X
9
0
1
0
1
Installation
Number
(4)
1
2
3
1
1
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
X
X
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Activated
Activated
Activated
Non-Activated
Non-Activated
Non-Activated
ARINC SPECIFICATION 429 PART 2 – Page 21
DATA STANDARDS
Label 006 0D0 – Engine Options (737)
Bit
Coding
Bit Status
Function
1
Label 1st digit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
0
nd
Label 2 digit
0
Label 3rd digit
X
X
6
X
SDI
SDI
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
2
2
2
2
SSM
SSM
SSM
Parity (Odd)
Notes:
[1] SDI
Bits
10
0
0
1
1
Installation
Number
9
0
1
0
1
(4)
1
2
3
[2]
28
1
1
0
0
0
Notes
0
X
X
X
X
X
Bits
27 26
1
0
0
1
1
1
1
1
0
0
Data
25
0
0
0
0
0
Engine – Option – 1
Engine – Option – 2
Engine – Option – 3
Engine – Option – 3
Engine – Option - 4
ARINC SPECIFICATION 429 PART 2 – Page 22
DATA STANDARDS
Label 013 0B8 – Control Word for TCAS/Mode S Transponder
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
0
nd
Label 2 digit
1
Notes
0
X
X
X
X
X
Label 3rd digit
X
3
SDI (MSB)
SDI (LSB)
Flight Level
Altitude Select
Altitude Select
Spare
Spare
Spare
Spare
User
Defined
TCAS Display
Mode
0.5
1.0
Selected
2.0
TCAS
4.0
Range
8.0
(NM)
16.0
32.0
64.0
SSM
SSM
Parity (Odd)
X
X
1
1
Absolute
Relative
2
2
3
3
3
3
Notes:
[1] SDI
Bits
10 9
0
0
0
1
1
0
1
1
Meaning
Both (TA/RA Bus #1 and #2)
Left (TA/RA Bus #1)
Right (TA/RA Bus #2)
Unrestricted
[2] Altitude Select
Bits
13 12
0
0
0
1
1
0
1
1
Meaning
Normal – A to +A
Above – A to +B
Below – B to +A
Not Used
[3] The use of these user-defined bits is optional. They are generated at the control panel, passed through the
transponder without change and sent to the TCAS computer unit. If there is no control function possible from these
bits, they are set to zero.
ARINC SPECIFICATION 429 PART 2 – Page 23
DATA STANDARDS
Label 016 0B8 – Control Word for TCAS/Mode S Transponder
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
0
nd
Label 2 digit
Label 3rd digit
1
6
0
X
X
X
X
Notes
X
X
X
X
SDI
SDI
Altitude Reporting
SPI
Display
Control
Sensitivity
Level
Control
D1
D2
D4
C1
C2
C4
B1
B2
B4
A1
A2
A4
SSM
SSM
Parity (Odd)
OFF
Indent ON
ON
Indent OFF
1, 5
1, 5
2
2
2
4096
Indent
Code
3
3
3
3
3
3
3
3
3
3
Notes:
[1] Display Control
Bits
Meaning
14 13
0
0
Primary and Traffic Advisory
0
1
Primary display functions only (no TCAS data)
1
0
TCAS Traffic Advisory Only
1
1
No control function possible
[2] Manual Sensitivity Level Control
Bits
Meaning
17 16 15
0
0
0
SL = 0 (AUTOMATIC)
0
0
1
SL = 1 (STBY)
0
1
0
SL = 2 (TA ONLY)
0
1
1
SL = 3
1
0
0
SL = 4
1
0
1
SL = 5
1
1
0
SL = 6
1
1
1
SL = 7
[3] See Attachment 5A of ARINC Characteristic 735 for Mode A reply codes.
[4] The transfer time should not exceed 200 milliseconds.
COMMENTARY
The delay from the time a command is activated at the control panel to the time of the equipment response should
be minimized.
[5] Primary display functions are those functions for which a display may have need designed when that display is also
being used in a shared manner as a Traffic Advisory Display.
ARINC SPECIFICATION 429 PART 2 – Page 24
DATA STANDARDS
Label 140 114 Fuel Pump Contactor
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
nd
1
Label 2 digit
X
X
4
Label 3rd digit
Notes
0
X
X
X
X
X
X
0
SDI
SDI
Standby Pump 1 Contactor
Main Pump 1 Contactor
Standby Pump 2 Contactor
Main Pump 2 Contactor
Standby Pump 3 Contactor
Main Pump 3 Contactor
Standby Pump 4 Contactor
Main Pump 4 Contactor
Center Tank Left Transfer Pump Contactor
Center Tank Right Transfer Pump Contactor
Center Tank Left Aft Transfer Pump Contactor
Center Tank Right Aft Transfer Pump Contactor
Act Transfer Pump Contactor
Trim Tank Left Transfer Pump Contactor
Trim Tank Right Transfer Pump Contactor
Inner 1 Tank Aft Transfer Pump Contactor
Inner 2 Tank Aft Transfer Pump Contactor
Inner 3 Tank Aft Transfer Pump Contactor
Inner 4 Tank Aft Transfer Pump Contactor
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
Energized
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
[2]
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 25
DATA STANDARDS
Label 141 114 Pump Contactor And Pushbutton States
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
Notes
0
X
X
nd
Label 2 digit
rd
Label 3 digit
4
X
X
X
X
1
X
X
SDI
SDI
RCT Transfer Pump A (Front) Contactor
RCT Transfer Pump B (Rear) Contactor
APU Pump Contactor
Main Pump 1 Pushbutton
Standby Pump 1 Pushbutton
Main Pump 2 Pushbutton
Standby Pump 2 Pushbutton
Main Pump 3 Pushbutton
Standby Pump 3 Pushbutton
Main Pump 4 Pushbutton
Standby Pump 3 Pushbutton
Center Tank Left Transfer Pump Pushbutton
Center Tank Right Transfer Pump Pushbutton
Center Tank Left Aft Transfer Pump PSHBTN
Center Tank Right Aft Transfer Pump PSHBTN
Trim Tank Left Transfer Pump Pushbutton
Trim Tank Right Transfer Pump Pushbutton
RCT Transfer Pump A (Front) Pushbutton
RCT Transfer Pump B (Rear) Pushbutton
SSM
SSM
Parity (Set to Odd Parity)
1
1
Off
Off
Off
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
Energized
Energized
Energized
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
[2]
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 26
DATA STANDARDS
Label 142 114 Pump Push button and LP Switch States
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
nd
Label 2 digit
Label 3rd digit
1
Notes
0
X
X
X
4
X
X
X
2
X
X
SDI
SDI
Inner Tank 1 Aft Transfer Pump Pushbutton
Inner Tank 2 Aft Transfer Pump Pushbutton
Inner Tank 3 Aft Transfer Pump Pushbutton
Inner Tank 4 Aft Transfer Pump Pushbutton
Inner Tank 1 Aft Transfer Pump LP
Inner Tank 2 Aft Transfer Pump LP
Inner Tank 3 Aft Transfer Pump LP
Inner Tank 4 Aft Transfer Pump LP
RCT Transfer Pump A (Front) LP
RCT Transfer Pump B (Rear) LP
Center Tank Left Transfer Pump LP
Center Tank Right Transfer Pump LP
Center Tank Left Aft Transfer Pump LP
Center Tank Right Aft Transfer Pump LP
Trim Tank Left Transfer Pump LP
Trim Tank Right Transfer Pump LP
Act Transfer Pump LP
APU Inlet Low Pressure Switch Low Pressure
APU Eng. Feed Low Pressure Switch Low Pressure
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
On
On
On
On
LP
LP
LP
LP
LP
LP
LP
LP
LP
LP
LP
LP
LP
LP
LP
Off
Off
Off
Off
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
Not LP
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 27
DATA STANDARDS
Label 143 114 Pump LP Switch State and FCMC Commands
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
nd
Label 2 digit
1
Notes
0
X
X
X
4
X
X
Label 3rd digit
3
X
X
X
SDI
SDI
Standby Pump 1 LP
Main Pump 1 LP
Standby Pump 2 LP
Main Pump 2 LP
Standby Pump 3 LP
Main Pump 3 LP
Standby Pump 4 LP
Main Pump 4 LP
Center Tank Left Transfer Pump Command
Center Tank Right Transfer Pump Command
Center Tank Left Aft Transfer Pump Command
Center Tank Right Aft Transfer Pump Command
Trim Tank Left Transfer Pump Command
Trim Tank Right Transfer Pump Command
Inner 1 Tank Aft Transfer Pump Command
Inner 2 Tank Aft Transfer Pump Command
Inner 3 Tank Aft Transfer Pump Command
Inner 4 Tank Aft Transfer Pump Command
Act Transfer Pump Command
SSM
SSM
Parity ( Set to Give Odd Parity)
1
1
Low
Low
Low
Low
Low
Low
Low
Low
On
On
On
On
On
On
On
On
On
On
On
Not Low
Not Low
Not Low
Not Low
Not Low
Not Low
Not Low
Not Low
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
0
1
[2]
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 28
DATA STANDARDS
Label 144 114 Valve Feedbacks
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
nd
Label 2 digit
1
Notes
0
X
X
X
4
X
X
Label 3rd digit
4
X
X
X
SDI
SDI
LP Valve 1 Open (1)
LP Valve 1 Shut (1)
LP Valve 2 Open (2)
LP Valve 2 Shut (2)
LP Valve 3 Open (3)
LP Valve 3 Shut (3)
LP Valve 4 Open (4)
LP Valve 4 Shut (4)
Crossfeed Valve 1 (C)
Crossfeed Valve 1 (C)
Crossfeed Valve 2 (A)
Crossfeed Valve 2 (A)
Crossfeed Valve 3 (E)
Crossfeed Valve 3 (E)
Crossfeed Valve 4 (Z)
Crossfeed Valve 4 (Z)
Left Outer Tank Inlet Valve (M)
Left Outer Tank Inlet Valve (M)
Pad Bit
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 29
DATA STANDARDS
Label 145 025 – Discrete Status 2 EFIS
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
X
X
4
Label 3rd digit
Notes
0
X
X
X
X
5
X
X
SDI
SDI
DI-29P
DI-30P
DI-31P
DI-32P
DI-33P
DI-34P
DI-35P
DI-36P
DI-37P
DI-38P
DI-39P
DI-40P
DI-41P
DI-43P
DI-44P
DI-45P
PAD
PAD
PAD
SSM
SSM
Parity (Odd)
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
X
X
X
ARINC SPECIFICATION 429 PART 2 – Page 30
DATA STANDARDS
Label 145 0A1 – FCC Control Panel Status Discrete (Triplex)
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
X
X
4
Label 3rd digit
Notes
0
X
X
X
X
5
X
X
Unassigned
Unassigned
A/P CWS R Engaged
A/P CWS L Engaged
A/P CWS C Engaged
A/P CWS R Engaged
A/P CWS L Engaged
A/P CWS C Engaged
Land 2 (Green)
Land 3 (Green)
LOC Mode Oper.
Appr. Mode Req.
G/S Mode Oper.
Flare Oper.
Rollout Mode Oper.
G/A Mode Oper.
Not Used
Not Used
Not Used
Not Used
Not Used
SSM
SSM
Parity (Odd)
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
ARINC SPECIFICATION 429 PART 2 – Page 31
DATA STANDARDS
Label 145 114 Valve Feedbacks
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
Label 2nd digit
4
Label 3rd digit
5
SDI
SDI
Inner Tank 2 Transfer Control Valve (EC)
Inner Tank 2 Transfer Control Valve (EC)
Left Refuel Isolation Valve (R)
Inner Tank 1 Inlet (BA)
Inner Tank 1 Inlet (BA)
Inner Tank 2 Inlet (F)
Inner Tank 2 Inlet (F)
Inner Tank 3 Inlet (H)
Inner Tank 3 Inlet (H)
Inner Tank 4 Inlet (BB)
Inner Tank 4 Inlet (BB)
Left Intertank Transfer Valve (Q)
Left Intertank Transfer Valve (Q)
Left Jettison Valve (X)
Left Jettison Valve (X)
Center Tank Restrictor Valve (GG)
Center Tank Restrictor Valve (GG)
Center Tank Inlet Valve (G)
Center Tank Inlet Valve (G)
SSM
SSM
Parity (Set to Give Odd Parity)
Notes
0
1
1
Forward
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Not Forward
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
2
2
Depending upon its application group and resolution bits 9 and10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
[2]
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 32
DATA STANDARDS
Label 146 025 – Discrete Status 3 EFIS
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
X
X
4
Label 3rd digit
6
Notes
0
X
X
X
X
X
X
SDI
SDI
DI-46P
DI-47P
DI-48P
DI-49P
DI-50P
DI-51P
DI-52P
DI-53P
DI-54P
DI-55P
DI-56P
DI-58P
DI-59P
DI-60P
DI-61P
DI-62P
PAD
PAD
PAD
SSM
SSM
Parity (Odd)
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
X
X
X
ARINC SPECIFICATION 429 PART 2 – Page 33
DATA STANDARDS
Label 146 0A1 – FCC Control Panel Status Discrete (Dual-Dual)
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
X
X
4
Label 3rd digit
Notes
0
X
X
X
X
6
Unassigned
Unassigned
A/P CWS
A/P CMD
Capt. F/D Engaged
Land Trk
ATS Warn
ILS CAT 2 Available
CAT 2 Autoland Available
CAT 3 Autoland Available
LOC Excess Beam Dev
F/O F/D Engaged
Glide Excess Beam Dev
Auto G/A Not Available
Engine Out Compensation Not Available
Unassigned
Align FW
Land 3 FW
Warning Inhibit
Unassigned
A/P CMD Warning
SSM
SSM
Parity (Odd)
X
X
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Requested
Requested
Requested
Not Requested
Not Requested
Not Requested
Requested
Not Requested
ARINC SPECIFICATION 429 PART 2 – Page 34
DATA STANDARDS
Label 146 114 Valve Feedbacks
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
nd
Label 2 digit
1
Notes
0
X
X
X
4
X
X
Label 3rd digit
6
X
X
X
SDI
SDI
Right Outer Tank Inlet Valve
Right Outer Tank Inlet Valve (N)
Transfer Control Valve Tank 3 (ED)
Transfer Control Valve Tank 3 (ED)
Right Refuel Isolation Valve (S)
Right Intertank Transfer Valve (P)
Right Intertank Transfer Valve (P)
Right Jettison Valve (Y)
Right Jettison Valve (Y)
Inner Tank 1 Transfer Valve (BC)
Inner Tank 1 Transfer Valve (BC)
Inner Tank 2 Transfer Valve (BG)
Inner Tank 2 Transfer Valve (BG)
Inner Tank 3 Transfer Valve (BH)
Inner Tank 3 Transfer Valve (BH)
Inner Tank 4 Transfer Valve (BD)
Inner Tank 4 Transfer Valve (BD)
Defuel Valve (BN)
Defuel Valve (BN)
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Open
Shut
Forward
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Not Open
Not Shut
Not Forward
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 35
DATA STANDARDS
Label 147 025 – Discrete Status 4 EFIS
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
X
X
4
Label 3rd digit
7
SDI
SDI
DI-63P
DI-64P
DI-65P
DI-66P
DI-67P
DI-68P
DI-69P
DI-93P
DI-94P
DI-95P
DI-98P
DI-99P
DI-100P
DI-101P
DI-106P
DI-107P
PAD
PAD
PAD
SSM
SSM
Parity (Odd)
Notes
0
X
X
X
X
X
X
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
X
X
X
ARINC SPECIFICATION 429 PART 2 – Page 36
DATA STANDARDS
Label 147 114 Valve Feedbacks
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
Notes
0
X
X
X
4
X
X
Label 3rd digit
7
X
X
X
SDI
SDI
Auxiliary Refuel Valve (BM)
Auxiliary Refuel Valve (BM)
Trim Tank Inlet Valve (L)
Trim Tank Inlet Valve (L)
Trim Tank Isolation Valve (T)
Trim Tank Isolation Valve (T)
Trim Pipe Isolation Valve (W)
Trim Pipe Isolation Valve (W)
Auxiliary Forward Transfer Valve (V)
Auxiliary Forward Transfer Valve (V)
RCT Isolation Valve (CA)
RCT Isolation Valve (CA)
RCT Inlet Valve (CB)
RCT Inlet Valve (CB)
RCT Transfer Valve (CC)
RCT Transfer Valve (CC)
RCT Auxiliary Transfer Valve (CD)
RCT Auxiliary Transfer Valve (CD)
Pad Bit
SSM
SSM
Parity (Set to Give Odd Parity
1
1
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 37
DATA STANDARDS
Label 150 114 FCMC Valve Commands
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
Label 2nd digit
5
Notes
0
X
X
X
X
X
Label 3rd digit
X
X
X
0
SDI
SDI
Left Outer Tank Inlet Valve (M) Command
Left Inter Tank Transfer Valve (Q) Command
Left Refuel Isolation Valve (R) Command
Left Jettison Valve (X) Command
Inner Tank 1 Inlet Valve (BA) Command
Inner Tank 1 Transfer Valve (Bc) Command
Inner Tank 2 Inlet Valve (F) Command
Inner Tank 2 Transfer Valve (BG) Command
Transfer Control Valve Tank 2 (EC) Command
Auxiliary Refuel Valve (BM) Command
Center Tank Inlet Valve (G) Command
Center Tank Restrictor Valve (GG) Command
Defuel Valve (BN) Command
Transfer Control Valve Tank 3 (Ed) Command
Inner Tank 3 Inlet Valve (H) Command
Inner Tank 3 Transfer Valve (BH Command)
Inner Tank 4 Transfer Valve (BD) Command
Inner Tank 4 Inlet Valve (BB) Command
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Unrestricted
Open
Open
Open
Open
Open
Open
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Restricted
Shut
Shut
Shut
Shut
Shut
Shut
2
2
Depending upon its application group and resolution bits 9 and10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 38
DATA STANDARDS
Label 151 05A – LB/KG Control Word
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
Notes
0
X
X
X
5
X
X
Label 3rd digit
X
X
1
X
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
PAD Bits
LBS/KGS
PAD
SSM
SSM
Parity (Odd)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
ARINC SPECIFICATION 429 PART 2 – Page 39
DATA STANDARDS
Label 151 114 FCMC Valve Commands
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
Notes
0
X
X
X
5
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Right Refuel Isolation Valve (S) Command
Right Jettison Valve (Y) Command
Right Inter Tank Transfer Valve (P) Command
Right Outer Tank Inlet Valve (N) Command
Auxiliary Fwd Transfer Valve (V) Command
Trim Pipe Isolation Valve (W) Command
Act Isolation Valve (AC) Command
Act Transfer Valve ( AA) Command
Act1 Inlet Valve (AG) Command
Act2 Inlet Valve (Ah) Command
Act Air Pressurization Command
RCT Isolation Valve (Ca) Command
RCT Auxiliary Transfer Valve (CD) Command
RCT Inlet Valve (CB) Command
RCT Transfer Valve (CC) Command
Trim Tank Inlet Valve (L) Command
Trim Tank Isolation Valve (T) Command
PAD
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Pressurized
Open
Open
Open
Open
Open
Open
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Shut
Depressurized
Shut
Shut
Shut
Shut
Shut
Shut
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 40
DATA STANDARDS
Label 152 114 Overhead/Refuel Panel Switch & Pushbutton States
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
5
Notes
0
X
X
X
X
X
Label 3rd digit
X
2
X
X
SDI
SDI
Act Transfer Override Pushbutton
Act Selector Switch
Trim Tank Auto Forward XFR O/Ride P/B
Trim Line Isolation Switch
Trim Line Isolation Switch
RCT Transfer Override P/B
Crossfeed 1 Switch
Crossfeed 2 Switch
Crossfeed 3 Switch
Crossfeed 4 Switch
Jettison Pushbuttons
Outer Transfer Override P/B
Center Transfer Override P/B
Refuel Panel Mode Select Switch
Refuel Panel Mode Select Switch
Refuel Panel Mode Select Switch
Refuel Panel Mode Select Switch
Refuel Panel Mode Select Switch
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Override
ACT 2
Auto
Isolation
Open
Override
Shut
Shut
Shut
Shut
Shut
Override
Override
Auto Refuel
Off
Man Refuel
Defuel
Ground XFR
Not Override
Not ACT 2
Not Auto
Not Isolation
Not Open
Not Override
Open
Open
Open
Open
Open
Not Override
Not Override
Not Auto Refuel
Not Off
Not Man Refuel
Not Defuel
Not Ground XFR
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 41
DATA STANDARDS
Label 153 114 Level States
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
Notes
0
X
X
X
5
X
X
Label 3rd digit
X
3
X
X
SDI
SDI
Left Surge Tank
Left Outer High Level
Inner Tank 1 High Level
Inner Tank 1 Low Level
Inner Tank 2 High Level
Inner Tank 2 Low Level
Centre Tank Low Level
Centre Tank High Level
Inner Tank 3 High Level
Inner Tank 4 High Level
Inner Tank 3 Low Level
Inner Tank 4 Low Level
Right Outer Tank High Level
Right Surge Tank
Act1 High Level
Act1 Low Level
Act2 High Level
Act2 Low Level
PAD
SSM
SSM
Parity (Set to give odd Parity)
1
1
Wet
High
High
Low
High
Low
Low
High
High
High
Low
Low
High
Wet
High
Low
High
Low
Not Wet
Not High
Not High
Not Low
Not High
Not Low
Not Low
Not High
Not High
Not High
Not Low
Not Low
Not High
Not Wet
Not High
Not Low
Not High
Not Low
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 42
DATA STANDARDS
Label 154 114 level States and Low Level Warnings
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
5
X
X
4
X
X
Notes
0
X
X
Label 3rd digit
X
X
SDI
SDI
RCT High Level
RCT Low Level
Trim Tank Left High Level
Trim Tank Low Level
Trim Tank Right High Level
Trim Tank Surge
INNER TANK 1 BELOW 11t (TBC
INNER TANK 1 BELOW 16t (TBC)
CENTRE TANK 1 BELOW 30t (TBC)
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
High
Low
High
Low
High
Wet
Below
Below
Below
Not High
Not Low
Not High
Not Low
Not High
Not Wet
Not Below
Not Below
Not Below
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 43
DATA STANDARDS
Label 155 025 – Discrete Status 5 EFIS
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
Notes
0
X
X
X
5
X
X
X
Label 3rd digit
5
X
X
SDI
SDI
DI-108P
DI-110P
DI-111P
DI-112P
DI-115P
DI-116P
DI-117P
DI-118P
DI-119P
DI-120P
DI-121P
DI-122P
DI-123P
DI-125P
DI-126P
DI-127P
PAD
PAD
PAD
SSM
SSM
Parity (Odd)
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
X
X
X
ARINC SPECIFICATION 429 PART 2 – Page 44
DATA STANDARDS
Label 155 114 Transfer Pump Faults
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
5
X
X
5
X
X
Notes
0
X
X
Label 3rd digit
X
X
SDI
SDI
Inner 1 Aft Transfer Pump
Inner 2 Aft Transfer Pump
Inner 3 Aft Transfer Pump
Inner 4 Aft Transfer Pump
Center Tank Left Transfer Pump
Center Tank Left Transfer Pump
Center Tank Right Transfer Pump
Center Tank Left Aft Transfer Pump
Center Tank Left Aft Transfer Pump
Trim Tank Left Transfer Pump
Trim Tank Right Transfer Pump
RCT Transfer Pump A (Front)
RCT Transfer Pump A (Front)
Act Transfer Pump
PAD
PAD
PAD
PAD
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
Fault
No Fault
No Fault
No Fault
No Fault
No Fault
No Fault
No Fault
No Fault
No Fault
No Fault
No Fault
No Fault
No Fault
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 45
DATA STANDARDS
Label 156 04D – L Tank Faults
Signal*
One State
LT/U 01 LO-Z Open
LT/U 02 LO-Z Open
LT/U 03 LO-Z Open
LT/U 04 LO-Z Open
LT/U 05 LO-Z Open
LT/U 06 LO-Z Open
LT/U 07 LO-Z Open
LT/U 08 LO-Z Open
LT/U 09 LO-Z Open
LT/U 10 LO-Z Open
LT/U 11 LO-Z Open
LT/U 12 LO-Z Open
LT/U 13 LO-Z Open
LT/U 14 LO-Z Open
LT/U 01 Contam
LT/U 02 Contam
LT/U 03 Contam
LT/U 04 Contam
LT/U 05 Contam
LT/U 06 Contam
LT/U 07 Contam
LT/U 08 Contam
LT/U 09 Contam
LT/U 10 Contam
LT/U 11 Contam
LT/U 12 Contam
LT/U 13 Contam
LT/U 14 Contam
LT/U 01 Shorted
LT/U 02 Shorted
LT/U 03 Shorted
LT/U 04 Shorted
LT/U 05 Shorted
LT/U 06 Shorted
LT/U 07 Shorted
LT/U 08 Shorted
LT/U 09 Shorted
LT/U 10 Shorted
LT/U 11 Shorted
LT/U 12 Shorted
LT/U 13 Shorted
LT/U 14 Shorted
LT/U 01 LO-Z Shrt
LT/U 02 LO-Z Shrt
LT/U 03 LO-Z Shrt
LT/U 04 LO-Z Shrt
LT/U 05 LO-Z Shrt
LT/U 06 LO-Z Shrt
LT/U 07 LO-Z Shrt
LT/U 08 LO-Z Shrt
LT/U 09 LO-Z Shrt
LT/U 10 LO-Z Shrt
LT/U 11 LO-Z Shrt
LT/U 12 LO-Z Shrt
LT/U 13 LO-Z Shrt
LT/U 14 LO-Z Shrt
*L
R
C
A
=
=
=
=
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Left Main Tank
Right Main Tank
Center Tank
Auxiliary Tank
Function
Zero State
OCT Lab
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
156
SDI Bits 9-10
Bit Loc
00
00
00
00
00
00
00
00
00
00
00
00
00
00
01
01
01
01
01
01
01
01
01
01
01
01
01
01
10
10
10
10
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
12
13
14
15
16
17
18
19
20
21
22
23
24
11
12
13
14
15
16
17
18
19
20
21
22
23
24
11
12
13
14
15
16
17
18
19
20
21
22
23
24
11
12
13
14
15
16
17
18
19
20
21
22
23
24
ARINC SPECIFICATION 429 PART 2 – Page 46
DATA STANDARDS
Label 157 04D – R Tank Faults
Signal*
One State
RT/U 01 LO-Z Open
RT/U 02 LO-Z Open
RT/U 03 LO-Z Open
RT/U 04 LO-Z Open
RT/U 05 LO-Z Open
RT/U 06 LO-Z Open
RT/U 07 LO-Z Open
RT/U 08 LO-Z Open
RT/U 09 LO-Z Open
RT/U 10 LO-Z Open
RT/U 11 LO-Z Open
RT/U 12 LO-Z Open
RT/U 13 LO-Z Open
RT/U 14 LO-Z Open
RT/U 01 Contam
RT/U 02 Contam
RT/U 03 Contam
RT/U 04 Contam
RT/U 05 Contam
RT/U 06 Contam
RT/U 07 Contam
RT/U 08 Contam
RT/U 09 Contam
RT/U 10 Contam
RT/U 11 Contam
RT/U 12 Contam
RT/U 13 Contam
RT/U 14 Contam
RT/U 01 Shorted
RT/U 02 Shorted
RT/U 03 Shorted
RT/U 04 Shorted
RT/U 05 Shorted
RT/U 06 Shorted
RT/U 07 Shorted
RT/U 08 Shorted
RT/U 09 Shorted
RT/U 10 Shorted
RT/U 11 Shorted
RT/U 12 Shorted
RT/U 13 Shorted
RT/U 14 Shorted
RT/U 01 LO-Z Shrt
RT/U 02 LO-Z Shrt
RT/U 03 LO-Z Shrt
RT/U 04 LO-Z Shrt
RT/U 05 LO-Z Shrt
RT/U 06 LO-Z Shrt
RT/U 07 LO-Z Shrt
RT/U 08 LO-Z Shrt
RT/U 09 LO-Z Shrt
RT/U 10 LO-Z Shrt
RT/U 11 LO-Z Shrt
RT/U 12 LO-Z Shrt
RT/U 13 LO-Z Shrt
RT/U 14 LO-Z Shrt
*L
R
C
A
=
=
=
=
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Left Main Tank
Right Main Tank
Center Tank
Auxiliary Tank
Function
Zero State
OCT Lab
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
157
SDI Bits 9-10
Bit Loc
00
00
00
00
00
00
00
00
00
00
00
00
00
00
01
01
01
01
01
01
01
01
01
01
01
01
01
01
10
10
10
10
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
12
13
14
15
16
17
18
19
20
21
22
23
24
11
12
13
14
15
16
17
18
19
20
21
22
23
24
11
12
13
14
15
16
17
18
19
20
21
22
23
24
11
12
13
14
15
16
17
18
19
20
21
22
23
24
ARINC SPECIFICATION 429 PART 2 – Page 47
DATA STANDARDS
Label 160 025 – Discrete Status 6 EFIS
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
6
X
X
X
Label 3rd digit
0
SDI
SDI
DI-128P
DI-129P
DI-130P
DI-139P
DI-140P
DI-142P
DI-143P
DI-144P
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PAD
PAD
PAD
SSM
SSM
Parity (Odd)
Notes
0
X
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
X
X
X
X
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
X
X
X
ARINC SPECIFICATION 429 PART 2 – Page 48
DATA STANDARDS
Label 160 04D – C Tank Faults
Signal*
One State
CT/U 01 LO-Z Open
CT/U 02 LO-Z Open
CT/U 03 LO-Z Open
CT/U 04 LO-Z Open
CT/U 05 LO-Z Open
CT/U 06 LO-Z Open
CT/U 07 LO-Z Open
CT/U 08 LO-Z Open
CT/U 09 LO-Z Open
CT/U 01 Contam
CT/U 02 Contam
CT/U 03 Contam
CT/U 04 Contam
CT/U 05 Contam
CT/U 06 Contam
CT/U 07 Contam
CT/U 08 Contam
CT/U 09 Contam
CT/U 01 Shorted
CT/U 02 Shorted
CT/U 03 Shorted
CT/U 04 Shorted
CT/U 05 Shorted
CT/U 06 Shorted
CT/U 07 Shorted
CT/U 08 Shorted
CT/U 09 Shorted
CT/U 01 LO-Z Shrt
CT/U 02 LO-Z Shrt
CT/U 03 LO-Z Shrt
CT/U 04 LO-Z Shrt
CT/U 05 LO-Z Shrt
CT/U 06 LO-Z Shrt
CT/U 07 LO-Z Shrt
CT/U 08 LO-Z Shrt
CT/U 09 LO-Z Shrt
*L
R
C
A
=
=
=
=
Open
Open
Open
Open
Open
Open
Open
Open
Open
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Left Main Tank
Right Main Tank
Center Tank
Auxiliary Tank
Function
Zero State
OCT Lab
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
160
SDI Bits 9-10
Bit Loc
00
00
00
00
00
00
00
00
00
01
01
01
01
01
01
01
01
01
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
11
11
12
13
14
15
16
17
18
19
11
12
13
14
15
16
17
18
19
11
12
13
14
15
16
17
18
19
11
12
13
14
15
16
17
18
19
ARINC SPECIFICATION 429 PART 2 – Page 49
DATA STANDARDS
Label 160 114 Valve Feedbacks
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
X
X
X
6
rd
Label 3 digit
Notes
0
X
X
X
X
X
0
SDI
SDI
Act Transfer Valve (AA)
Act Transfer Valve (AA)
Act Isolation Valve (AC)
Act Isolation Valve (AC)
Act 1 Inlet Valve (AG)
Act 1 Inlet Valve (AG)
Act 2 Inlet Valve (AH)
Act 2 Inlet Valve (AH)
Act 1 Vent Valve (AE)
Act 1 Vent Valve (AE)
Act 2 Vent Valve (AF)
Act 2 Vent Valve (AF)
Act Air Shut-Off Valve (AD)
Act Air Shut-Off Valve (AD)
APU LP Valve (J)
APU LP Valve (J)
APU Isolation Valve (K)
APU Isolation Valve (K)
Pad Bit
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Open
Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
Not Open
Not Shut
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 50
DATA STANDARDS
Label 161 025 – Discrete Status 7 EFIS
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
6
Notes
0
X
X
X
X
X
X
X
Label 3rd digit
1
X
SDI
SDI
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PAD
PAD
PAD
SSM
SSM
Parity (Odd)
X
X
X
ARINC SPECIFICATION 429 PART 2 – Page 51
DATA STANDARDS
Label 161 04D – A Tank Faults
Signal*
AT/U 01 LO-Z Open
AT/U 02 LO-Z Open
AT/U 03 LO-Z Open
AT/U 04 LO-Z Open
AT/U 05 LO-Z Open
AT/U 06 LO-Z Open
AT/U 07 LO-Z Open
AT/U 08 LO-Z Open
AT/U 09 LO-Z Open
AT/U 10 LO-Z Open
AT/U 11 LO-Z Open
AT/U 01 Contam
AT/U 02 Contam
AT/U 03 Contam
AT/U 04 Contam
AT/U 05 Contam
AT/U 06 Contam
AT/U 07 Contam
AT/U 08 Contam
AT/U 09 Contam
AT/U 10 Contam
AT/U 11 Contam
AT/U 01 Shorted
AT/U 02 Shorted
AT/U 03 Shorted
AT/U 04 Shorted
AT/U 05 Shorted
AT/U 06 Shorted
AT/U 07 Shorted
AT/U 08 Shorted
AT/U 09 Shorted
AT/U 10 Shorted
AT/U 11 Shorted
AT/U 01 LO-Z Shrt
AT/U 02 LO-Z Shrt
AT/U 03 LO-Z Shrt
AT/U 04 LO-Z Shrt
AT/U 05 LO-Z Shrt
AT/U 06 LO-Z Shrt
AT/U 07 LO-Z Shrt
AT/U 08 LO-Z Shrt
AT/U 09 LO-Z Shrt
AT/U 10 LO-Z Shrt
*L
R
C
A
=
=
=
=
Left Main Tank
Right Main Tank
Center Tank
Auxiliary Tank
One State
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Contam
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Shorted
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Short to Gnd
Function
Zero State
OCT Lab
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
161
SDI Bits 9-10
Bit Loc
00
00
00
00
00
00
00
00
00
00
00
01
01
01
01
01
01
01
01
01
01
01
10
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
11
11
11
12
13
14
15
16
17
18
19
20
21
11
12
13
14
15
16
17
18
19
20
21
11
12
13
14
15
16
17
18
19
20
21
11
12
13
14
15
16
17
18
19
20
ARINC SPECIFICATION 429 PART 2 – Page 52
DATA STANDARDS
Label 161 10A – Full Authority Engine Control Maintenance Discretes
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
nd
Label 2 digit
6
Notes
0
X
X
X
X
X
X
X
Label 3rd digit
1
X
SDI
SDI
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Screen ID
Screen ID
Screen ID
Screen ID
Screen ID
Screen ID
Screen ID
Screen ID
SSM
SSM
Parity (Odd)
Note:
[1] Screen ID Codes
Value (HEX)
Meaning
13
Ignition Test
14
Igniter Test in Progress
21
FADEC Test
22
FADEC Test in Progress
1
1
1
1
1
1
1
1
ARINC SPECIFICATION 429 PART 2 – Page 53
DATA STANDARDS
Label 161 10B – Full Authority Engine Control Maintenance Discretes
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
1
Label 2nd digit
6
Notes
0
X
X
X
X
X
X
X
Label 3rd digit
1
X
SDI
SDI
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Screen ID
Screen ID
Screen ID
Screen ID
Screen ID
Screen ID
Screen ID
Screen ID
SSM
SSM
Parity (Odd)
Note:
[1] Screen ID Codes
Value (HEX)
Meaning
13
Ignition Test
14
Ignitor Test in Progress
21
FADEC Test
22
FADEC Test in Progress
1
1
1
1
1
1
1
1
ARINC SPECIFICATION 429 PART 2 – Page 54
DATA STANDARDS
Label 161 114 Indicated Pump Status
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
nd
Label 2 digit
rd
Label 3 digit
1
Notes
0
X
X
X
X
6
X
X
X
1
X
SDI
SDI
Main Pump 1 Abnormally On
Main Pump 1 Abnormally Off
Main Pump 1 Low Press
Standby Pump 1 Normally On
Standby Pump 1 Abnormally On
Standby Pump 1 Abnormally Off
Standby Pump 1 Low Press
Main Pump 2 Abnormally On
Main Pump 2 Abnormally Off
Main Pump 2 Low Press
Standby Pump 2 Normally On
Standby Pump 2 Abnormally On
Standby Pump 2 Abnormally Off
Standby Pump 2 Low Press
Main Pump 3 Abnormally On
Main Pump 3 Abnormally Off
Main Pump 3 Low Press
Pad
Pad
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Abnormally On
Abnormally Off
Low Press
Normally On
Abnormally On
Abnormally Off
Low Press
Abnormally On
Abnormally Off
Low Press
Normally On
Abnormally On
Abnormally Off
Pump 2 Low Press
Abnormally On
Abnormally Off
Low Press
Not Abnormally On
Not Abnormally Off
Not Low Press
Not Normally On
Not Abnormally On
Not Abnormally Off
Not Low Press
Not Abnormally On
Not Abnormally Off
Not Low Press
Not Normally On
Not Abnormally On
Not Abnormally Off
Not Pump 2 Low Press
Not Abnormally On
Not Abnormally Off
Not Low Press
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
0
1
[2]
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 55
DATA STANDARDS
Label 162 114 Indicated pump Status
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
Label 2nd digit
6
Label 3rd digit
2
Notes
0
X
X
X
X
X
X
X
X
SDI
SDI
Standby Pump 3 Normally On
Standby Pump 3 Abnormally On
Standby Pump 3 Abnormally Off
Standby Pump 3 Low Press
Main Pump 4 Abnormally On
Main Pump 4 Abnormally Off
Main Pump 4 Low Press
Standby Pump 4 Normally On
Standby Pump 4 Abnormally On
Standby Pump 4 Abnormally Off
Standby Pump 4 Low Press
Aft Transfer Pump Normally On
Inner 1 Aft Transfer Pump Abnormally On
Inner 1 Aft Transfer Pump Abnormally Off
Inner 2 Aft Transfer Pump Normally On
Inner 2 Aft Transfer Pump Abnormally On
Inner 2 Aft Transfer Pump Abnormally Off
Pad
Pad
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Normal On
Abnormally On
Abnormally Off
Low Pressure
Abnormally On
Abnormally Off
Low Pressure
Normal On
Abnormally On
Abnormally Off
Low Pressure
Normal On
Abnormally On
Abnormally Off
Normal On
Abnormally On
Abnormally Off
Not Normal On
Not Abnormally On
Not Abnormally Off
Not Low Pressure
Not Abnormally On
Not Abnormally Off
Not Low Pressure
Not Normal On
Not Abnormally On
Not Abnormally Off
Not Low Pressure
Not Normal On
Not Abnormally On
Not Abnormally Off
Not Normal On
Not Abnormally On
Not Abnormally Off
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
[2] SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 56
DATA STANDARDS
Label 163 114 Indicated Pump Status
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
nd
Label 2 digit
rd
Label 3 digit
1
Notes
0
X
X
X
X
6
X
X
3
X
X
SDI
SDI
Center Tank Left XFR Pump Normally Off
Center Tank Left XFR Pump Abnormally On
Center Tank Left XFR Pump Abnormally Off
Center Tank Left XFR Pump Low Press
Center Tank Right XFR Pump Normally Off
Center Tank Right XFR Pump Abnormally On
Center Tank Right XFR Pump Abnormally Off
Center Tank Right XFR Pump Low Press
Inner 3 Aft XFR Pump Normally On
Inner 3 Aft XFR Pump Abnormally On
Inner 3 Aft XFR Pump Abnormally Off
Inner 4 Aft XFR Pump Normally On
Inner 4 Aft XFR Pump Abnormally On
Inner 4 Aft XFR Pump Abnormally Off
Center Tank Left Aft XFR Pump Normally On
Center Tank Left Aft XFR Pump Abnormally On
Center Tank Left Aft XFR Pump Abnormally Off
Act Transfer Pump Low Pressure
APU Pump Low Pressure
SSM
SSM
Parity (Set to Odd Parity)
1
1
Normally Off
Abnormally On
Abnormally Off
Low Pressure
Normally Off
Abnormally On
Abnormally Off
Low Pressure
Normally Off
Abnormally On
Abnormally Off
Normally On
Abnormally On
Abnormally Off
Normally On
Abnormally On
Abnormally Off
Low Pressure
Low Pressure
Not Normally Off
Not Normally On
Not Abnormally Off
Not Low Pressure
Not Normally Off
Not Abnormally On
Not Abnormally Off
Not Low Pressure
Not Normally Off
Not Abnormally On
Not Abnormally Off
Not Normally On
Not Abnormally On
Not Abnormally Off
Not Normally On
Not Abnormally On
Not Abnormally Off
Not Low Pressure
Not Low Pressure
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
0
1
[2]
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 57
DATA STANDARDS
Label 164 114 Indicated Pump Status
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
Label 2nd digit
6
X
X
X
Label 3rd digit
4
X
Notes
0
X
X
X
X
SDI
SDI
Center Tank Right Aft XFR Pump Norm On
Center Tank Right Aft XFR Pump Abnorm On
Center Tank Right Aft XFR Pump Abnorm Off
Trim Tank Left XFR Pump Normally Off
Trim Tank Left XFR Pump Abnormally On
Trim Tank Left XFR Pump Abnormally Off
Trim Tank Left XFR Pump Low Press
Trim Tank Right XFR Pump Normally Off
Trim Tank Right XFR Pump Abnormally On
Trim Tank Right XFR Pump Abnorm Off
Trim Tank Right XFR Pump Low Press
RCT XFR Pump A (Front) Normally Off
RCT Transfer Pump A (Front) Abnorm On
RCT XFR Pump A (Front) Abnormally Off
RCT XFR Pump A (Front) Low Press
26 RCT XFR Pump B (Rear) Normally Off
RCT XFR Pump B (Rear) Abnormally On
RCT XFR Pump B (Rear) Abnormally Off
RCT XFR Pump B (Rear) Low Press
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Normally On
Abnormally On
Abnormally Off
Normally Off
Abnormally On
Abnormally Off
Low Pressure
Normally Off
Abnormally On
Abnormally Off
Low Pressure
Normally Off
Abnormally On
Abnormally Off
Low Pressure
Normally Off
Abnormally On
Abnormally Off
Low Pressure
Not Normally On
Not Abnormally Off
Not Normally Off
Not Normally On
Not Abnormally Off
Not Low Pressure
Not Normally Off
Not Normally On
Not Abnormally Off
Not Low Pressure
Not Normally Off
Not Normally On
Not Abnormally Off
Not Low Pressure
Not Normally Off
Not Normally On
Not Abnormally Off
Not Low Pressure
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
Bit 9
1
0
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 58
DATA STANDARDS
Label 165 114 Indicated Valve Status
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
Notes
0
X
X
X
X
6
X
rd
Label 3 digit
X
5
X
X
SDI
SDI
Eng LP Valve 1 (1) Normally Open
Eng LP Valve 1 (1) Abnormally Open
Eng LP Valve 1 (1) Abnormally Shut
Eng LP Valve 2 (2) Normally Open
Eng LP Valve 2 (2) Abnormally Open
Eng LP Valve 2 (2) Abnormally Shut
Eng LP Valve 3 (3) Normally Open
Eng LP Valve 3 (3) Abnormally Open
Eng LP Valve 3 (3) Abnormally Shut
Eng LP Valve 4 (4) Normally Open
Eng LP Valve 4 (4) Abnormally Open
Eng LP Valve 4 (4) Abnormally Shut
Left Jettison Valve Normally Open
Left Jettison Valve Abnormally Open
Left Jettison Valve Abnormally Shut
Right Jettison Valve Normally Open
Right Jettison Valve Abnormally Open
Right Jettison Valve Abnormally Shut
Trim Line Isolation Valve (W) Abnorm Open
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Normally Open
Abnormally Open
Abnormally Shut
Normally Open
Abnormally Open
Abnormally Shut
Normally Open
Abnormally Open
Abnormally Shut
Normally Open
Abnormally Open
Abnormally Shut
Normally Open
Abnormally Open
Abnormally Shut
Normally Open
Abnormally Open
Abnormally Shut
Abnormally Open
Not Normally Open
Not Abnormally Open
Not Normally Shut
Not Normally Open
Not Normally Open
Not Normally Shut
Not Normally Open
Not Normally Open
Not Normally Shut
Not Normally Open
Not Normally Open
Not Normally Shut
Not Normally Open
Not Normally Open
Not Normally Shut
Not Normally Open
Not Normally Open
Not Normally Shut
Not Normally Open
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 59
DATA STANDARDS
Label 166 114 Indicated Valve Status
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
Label 2nd digit
6
Label 3rd digit
6
Notes
0
X
X
X
X
X
X
X
X
SDI
SDI
Crossfeed Valve 1 (C) Normally Open
Crossfeed Valve 1 (C) Normally Shut
Crossfeed Valve 1 (C) Abnormally Open
Crossfeed Valve 1 (C) Abnormally Shut
Crossfeed Valve 2 (A) Normally Open
Crossfeed Valve 2 (A) Normally Shut
Crossfeed Valve 2 (A) Abnormally Open
Crossfeed Valve 2 (A) Abnormally Shut
Crossfeed Valve 3 (E) Normally Open
Crossfeed Valve 3 (E) Normally Shut
Crossfeed Valve 3 (E) Abnormally Open
Crossfeed Valve 3 (E) Abnormally Shut
Crossfeed Valve 4 (Z) Normally Open
Crossfeed Valve 4 (Z) Normally Shut
Crossfeed Valve 4 (Z) Abnormally Open
Crossfeed Valve 4 (Z) Abnormally Shut
PAD
PAD
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Normally Open
Normally Shut
Abnormally Open
Abnormally Shut
Normally Open
Normally Shut
Abnormally Open
Abnormally Shut
Normally Open
Normally Shut
Abnormally Open
Abnormally Shut
Normally Open
Normally Shut
Abnormally Open
Abnormally Shut
Not Normally Open
Not Normally Shut
Not Abnormally Open
Not Abnormally Shut
Not Normally Open
Not Normally Shut
Not Abnormally Open
Not Abnormally Shut
Not Normally Open
Not Normally Shut
Not Abnormally Open
Not Abnormally Shut
Not Normally Open
Not Normally Shut
Not Abnormally Open
Not Abnormally Shut
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 60
DATA STANDARDS
Label 167 114 Indicated Valve Status
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Label 1st digit
1
nd
Label 2 digit
Notes
0
X
X
X
X
6
X
rd
Label 3 digit
X
X
X
7
SDI
SDI
Act 1 Inlet Valve (Ag) Normally Open
Act 1 Inlet Valve (Ag) Normally Shut
Act 1 Inlet Valve (Ag) Abnormally Open
Act 1 Inlet Valve (Ag) Abnormally Shut
Act 2 Inlet Valve (Ah) Normally Open
Act 2 Inlet Valve (Ah) Normally Shut
Act 2 Inlet Valve (Ah) Abnormally Open
Act 2 Inlet Valve (Ah) Abnormally Shut
Act Isolation Valve (Ac) Abnormally Open
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
PAD
SSM
SSM
Parity ( Set to Give Odd Parity)
1
1
Normally Open
Normally Shut
Abnormally Open
Abnormally Shut
Normally Open
Normally Shut
Abnormally Open
Abnormally Shut
Abnormally Open
Not Normally Open
Not Normally Shut
Not Abnormally Open
Not Abnormally Shut
Not Normally Open
Not Normally Shut
Not Abnormally Open
Not Abnormally Shut
Not Abnormally Open
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
[2] SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 61
DATA STANDARDS
Label 214 xxx ICAO 24-Bit Aircraft Address Word #1 – (Discrete)
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
P SSM A16--------------------------------------------------------------- A1
MSB
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Label
.
2
.
.
.
1
.
.
Label
4
PAD
.
.
.
PAD
ICAO 24-Bit Aircraft Address (Part 1)
.
.
.
.
.
.
.
.
.
.
.
.
.
.
ICAO 24-Bit Aircraft Address (Part 1)
SSM
SSM
Parity
A1 (MSB)
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
1
1
Odd
Sign Status Matrix (SSM) Definition per ARINC Specification 429
Bit
31
0
0
1
1
[2]
30
0
1
0
1
All PAD bits are set to binary 0
Notes
1
0
0
0
1
1
0
0
Notes:
[1]
876 543
21
Octal Label
214
001
100
01
Meaning
Normal Operation
NCD
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 62
DATA STANDARDS
Label 216 XXX ICAO 24-Bit Aircraft Address Word #2 - (Discrete)
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
P SSM
A24--------------------------A17
LSB
Bit
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Label
.
2
.
.
.
1
.
.
Label
6
PAD
.
.
PAD
ICAO 24-Bit Aircraft Address (Part 2)
.
.
.
.
.
.
ICAO 24-Bit Aircraft Address (Part 2)
PAD
.
23
24
25
26
27
28
29
30
31
32
.
.
.
.
.
.
PAD
SSM
SSM
Parity
Notes:
[1]
Notes
1
0
0
0
1
1
1
0
A17
A18
A19
A20
A21
A22
A23
A24 (LSB)
1
1
Odd
Sign Status Matrix (SSM) Definition per ARINC Specification 429
Bit
31
0
0
1
1
[2]
Coding
876 543
21
Octal Label
216
011
100
01
30
0
1
0
1
All PAD bits are set to binary 0
Meaning
Normal Operation
NCD
Functional Test
Failure warning
ARINC SPECIFICATION 429 PART 2 – Page 63
DATA STANDARDS
Label 256 04D – Fuel Discretes
Signal*
Stet Fault A
Stet Fault A
A Tank Accuracy A
L Tank Accuracy A
R Tank Accuracy A
C Tank Accuracy A
Stet Fault R
Stet Fault R
A Tank Accuracy R
L Tank Accuracy R
R. Tank Accruacy R
C Tank Accuracy R
Stet Fault L
Stet Fault L
A Tank Accuracy L
L Tank Accuracy L
R Tank Accuracy L
C Tank Accuracy L
Stet Fault C
Stet Fault C
A Tank Accuracy C
L Tank Accuracy C
R Tank Accuracy C
C Tank Accuracy C
One State
Fault
Fault
Unknown
Unknown
Unknown
Unknown
Fault
Fault
Unknown
Unknown
Unknown
Unknown
Fault
Fault
Unknown
Unknown
Unknown
Unknown
Fault
Fault
Unknown
Unknown
Unknown
Unknown
Function
Zero State
OCT Lab
OK
OK
Normal
Normal
Normal
Normal
OK
OK
Normal
Normal
Normal
Normal
OK
OK
Normal
Normal
Normal
Normal
OK
OK
Normal
Normal
Normal
Normal
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
256
SDI Bits 9-10
Bit Loc
00
00
00
00
00
00
01
01
01
01
01
01
10
10
10
10
10
10
11
11
11
11
11
11
11
12
13
14
15
16
11
12
13
14
15
16
11
12
13
14
15
16
11
12
13
14
15
16
ARINC SPECIFICATION 429 PART 2 – Page 64
DATA STANDARDS
Label 270 001 – FCC General Discrete Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
0
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
Glide Capt ID
LOC Capt Cond
LOC Trk Com
LOC Trk Mon
700 Ft Com
700 Ft Mon
Flare Cond Com
Flare Cond Mon
CWS L. D. Pitch
CWS L. D. Roll
Appr II Own
Land II Own
Land III Own
FCC FW
AHRS I Validity
N1 Command
ARM TCC Command
SPD/Mach Command
TBD
SSM
SSM
Parity (Odd)
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
ARINC SPECIFICATION 429 PART 2 – Page 65
DATA STANDARDS
Label 270 004 – IRS Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Align Mode/Not Ready
Reversionary Attitude Mode
Normal Mode
Set Heading
Attitude Invalid
DC Fail (Low)
On DC
ADC Fault
IRU Fault
DC Fail – ON DC
Align Fault
No IRS Initialization
Excessive Motion Error
ADC/IRU Fault
No VOR/DME #1 Input
Align Status
Align Status
Align Status
No VOR/DME #2 Input
SSM
SSM
Parity (Odd)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
Notes:
[1] Bit 11, 12, or 13 is always set to Logic (1).
[2] See IRS/AHRS Bit Explanations table on next page.
1
1
1
2
ARINC SPECIFICATION 429 PART 2 – Page 66
DATA STANDARDS
IRS/AHRS Bit Explanations
Bit
11
12
13
Align Mode/NR
Reversionary Att Mode
NAV Mode
14
Set Heading
15
Attitude Invalid
16
17
DC Fail
On DC
18
ADC Fault
19
IRU Fault
20
DC Fail – On DC
21
Align Fault
22
23
24
25
No IRS Initialization
Excessive Motion Error
ADC/IRU Fault
No VOR/DME #1 Input
26
Align Status
27
28
29
Align Status
Align Status
No VOR/DME #2 Input
Function
The IRU operating software mode is ALIGN or the initialization of any mode.
The IRU operating software is ATT
The IRU operating software mode is NAV
Magnetic heading outputs are no longer being calculated but have the characteristics
of a “free DG” and a set heading has been input to the IRU.
The IRU has detected a failure of attitude, heading, angular body rates, or linear
body accelerations (same as FAULT discrete).
The IRU DC power input is less than 18 VDC.
The IRU is operating on the DC power input.
ADC inflight fault, but power on BitE found no faults with the IRU ADC input
channel.
The BitE has detected a fault not annunciated in BitS 18, 21, 22, 23, of 24.
The DC power input was not available when required by the IRU. This condition
shall be reset only by power on initialization.
Failed the IRU operating software ALIGN criterion, but neither power on nor
continuous BitE show any faults.
No input or an incorrect input has been received from the IRMP or FMCs.
Non-zero ground speed during the ALIGN mode.
ADC inflight fault, but no power-on BitE information available prior to flight.
Align status is represented by a series of descending digits, each indicating a
successive state of alignment. Three bits provide a seven state alignment status as
stated in Note 1.
Note:
[1]
LSB
26
1
0
1
0
27
1
1
0
0
MSB
28
1
1
0
0
Alignment Commenced
Highest Alignment Status
Unassigned
ARINC SPECIFICATION 429 PART 2 – Page 67
DATA STANDARDS
Label 270 005 – AHRS Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Align Mode/Not Ready
Reversionary Attitude Mode
Normal Mode
Magnetic Heading/DC Mode
Attitude Invalid
Low Battery (Not used in AHRS)
On Battery
TAS Invalid
AHRU Fault
IRS Use
IRS Use
IRS Use
IRS Use
IRS Use
No VOR/DME #1 Input
IRS Use
IRS Use
IRS Use
No VOR/DME #2 Input
SSM
SSM
Parity (Odd)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
Yes
No
Yes
No
2
3
1
Notes:
[1] Attitude invalid is equivalent to AHRS failure.
[2] Bit 13 “1” condition indicates that AHRS is in the “Normal” mode as described in Section 1.2.1 of ARINC
Characteristic 705. A “0” condition indicates that the AHRS is in the reversionary “basic mode.”
[3] Bit 14 “1” condition indicates that AHRS is in the “Magnetic Heading” mode. A “0” condition indicates the AHRS
is in the reversionary “DG” mode. See Section 1.2.2 of ARINC Characteristic 705 for description of modes of
heading operation.
ARINC SPECIFICATION 429 PART 2 – Page 68
DATA STANDARDS
Label 270 006 – ADS Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
nd
Label 2 digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Icing Detector
Pitot Probe Heat
ADS Computer Status
Pitot/Static Probe Heat
Static Source Heat
TAT Probe Heat
Left Side Angle of Attack Sensor Heat
Right Side Angle of Attach Sensor Heat
VMO/MMO Overspeed Warning
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Angle of Attach Alternate Correction
Baro-Correction Port “A”
Zero Mach SSEC
SSM
SSM
Parity (Odd)
On
On
Fail
On
On
On
On
On
Warn
Off
Off
Good
Off
Off
Off
Off
Off
Not Warn
Yes
Yes
Yes
No
No
No
ARINC SPECIFICATION 429 PART 2 – Page 69
DATA STANDARDS
Label 270 00B – GPS Data
Bit
Coding
Bit Status
Function
Label 1st digit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Spare
Spare
Vertical Maneuver Alter (Flash)
Vertical Maneuver Alert (On)
Turn Point Alert (Flash)
Turn Point Alert (On)
No Waypoint Entered
No Course Entered
2D/3D NAV
GPS NAV Valid
EN Route
Terminal
GPS High Accuracy
Approach (Angular)
GPS Self Test (Bit)
Figure of Merit (LSB)
Figure of Merit
Figure of Merit
Figure of Merit (MSB)
SSM
SSM
Parity (Odd)
On
Flash
On
Flash
True
True
3D
True
True
True
True
True
True
Off
Off
Off
Off
False
False
2D
False
False
False
False
False
False
Yes
No
1
1
Notes:
[1]
Bits
15
0
1
0
1
Status
16
0
0
1
1
Enroute
Terminal
Approach
N/A
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 – Page 70
DATA STANDARDS
Label 270 01A – EEC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
nd
Label 2 digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Pad
Pad
Pad
Pad
EPR Loop Selected
N2 Loop Selected
EGT Loop Selected
Integrator on Min Stop
Integrator on Max Stop
EEC On/Off Discrete
Initialization
Low Speed Latch
EAROM
EEC Probe T2 Selected
Fault Light
See Main Panel
TCC System
TCA System
Thrust Bump Inhibit
SSM
SSM
Parity (Odd)
Yes
Yes
Yes
Yes
Yes
Off
Yes
Yes
Failed
Yes
On
Yes
Failed
Failed
Yes
X
X
X
X
No
No
No
No
No
On
No
No
Good
No
Off
No
Good
Good
No
ARINC SPECIFICATION 429 PART 2 – Page 71
DATA STANDARDS
Label 270 023 – GPWS Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Sink Rate
Pull Up
Terrain
Don’t Sink
Too Low Gear
Too Low Flap
Too Low Terrain
Glide Slope
Minimum Minimum
Terrain Pull Up
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
SSM
SSM
Parity (Odd)
1
1
1
1
1
1
1
1
1
1
Note:
[1] Only one visual message should be displayed at a time (only one date bit should be set to the logic “1” state at a
time).
ARINC SPECIFICATION 429 PART 2 – Page 72
DATA STANDARDS
Label 270 02F – EEC Status
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
nd
Label 2 digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Pad
Pad
Pad
PDIU Status
Spare
Channel Select Mode
Primary Chan Manually selected
N2 Droop Control Mode
Reverser System Status
Channel Controlling Status
2.5 Bleed System Failed
TCA Valve(s) Failed Closed
Case Cooling Valve Stuck
14th Stage Bleed System Failed
Channel Incapable (Failed)
Oil Cooling System Status
SVA System Failed
Starter Cutout Command
Spare
SSM
SSM
Parity (Odd)
Invalid
Secondary
Selected
Engaged
Inoperative
Controlling
Failed
Failed
Failed
Failed
Incapable
Faulted
Failed
Cutout
X
X
X
X
X
OK
Auto
Not Selected
Not Engaged
OK
Not Controlling
Operational
OK
OK
Operational
Capable
OK
Operational
Not Cutout
X
X
X
X
1
Note:
[1] Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
ARINC SPECIFICATION 429 PART 2 – Page 73
DATA STANDARDS
Label 270 030 – Transponder Discrete
Bit
Coding
Bit Status
Function
Label 1st digit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
nd
Label 2 digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Left
Left
Right
Right
Up
Up
Up
Up
Down
Down
Down
Down
SSM
SSM
Parity (Odd)
1
1
2
2
3
3
3
3
4
4
4
4
Notes:
[1]
[3]
Bit
Left Component
No Left Advisory
Turn Left
Don’t Turn Left
Not Used
Bit
Right Component
No Right Advisory
Turn Right
Don’t Turn Right
Not Used
00
01
10
11
[2]
00
01
10
11
Bit
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001-1111
Up Component
No Up Advisory
Climb
Climb Faster than 500 FPM
Climb Faster than 1000 FPM
Climb Faster than 2000 FPM
Don’t Descend
Don’t Descend Faster than 500 FPM
Don’t Descend Faster than 1000 FPM
Don’t Descend Faster than 2000 FPM
Not Used
[4]
Bit
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001-1111
Down Component
No Down Advisory
Descend
Descend Faster than 500 FPM
Descend Faster than 1000 FPM
Descend Faster than 2000 FPM
Don’t Climb
Don’t Climb Faster than 500 FPM
Don’t Climb Faster than 1000 FPM
Don’t Climb Faster than 2000 FPM
Not Used
ARINC SPECIFICATION 429 PART 2 – Page 74
DATA STANDARDS
Label 270 033
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Turbine Case Cooling Valve
Upper Turbine Cooling Valve
Lower Turbine Cooling Valve
Fuel Heater Valve
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
SSM
SSM
Parity (Odd)
Open
Open
Open
Open
Closed
Closed
Closed
Closed
ARINC SPECIFICATION 429 PART 2 – Page 75
DATA STANDARDS
Label 270 035 – TCAS Vertical RA Data Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI Bit 0
SDI Bit 1
Advisory Altitude Rate 100 ft/min
Advisory Altitude Rate 200 ft/min
Advisory Altitude Rate 400 f/min
Advisory Altitude Rate 800 ft/min
Advisory Altitude Rate 1600 ft/min
Advisory Altitude Rate 3200 ft/min
Advisory Altitude Rate Sign
Combined Control
Combined Control
Combined Control
Vertical Control
Vertical Control
Vertical Control
Up Advisory
Up Advisory
Up Advisory
Down Advisory
Down Advisory
Down Advisory
SSM
SSM
Parity (Odd)
1
1
1
2
2
2
3
3
3
4
4
4
5
5
Notes:
[1]
Combined Control
20
0
0
0
0
1
1
1
1
[1A]
Bit
19
0
0
1
1
0
0
1
1
Meaning
18
0
1
0
1
0
1
0
1
No Advisory
Clear of Conflict
Drop Track
Altitude Lost
Climb Corrective
(1A)
Descend Corrective (1A)
Preventative
Not Used
CAS logic defined by RTCA DO-185 Change 6 does not discreminiate between Climb Corrective and Descend
Corrective. The omission is expected to be corrected in Change 7. Meanwhile, the receiving RA Display must
assume a Climb Corrective when either a Climb Corrective or Descend Corrective is issued until the MOPS is
revised.
ARINC SPECIFICATION 429 PART 2 – Page 76
DATA STANDARDS
Label 270 035 – TCAS Vertical RA Data Discrete (cont’d)
[2] Vertical Control
23
0
0
0
0
1
1
1
1
Bit
22
0
0
1
1
0
0
1
1
Meaning
21
0
1
0
1
0
1
0
1
Advisory is not one of the following types
Crossing
Reversal
Increase
Maintain
Not Used
Not Used
Not Used
[3] Up Advisory
26
0
0
0
0
1
1
1
1
Bit
25
0
0
1
1
0
0
1
1
Meaning
24
0
1
0
1
0
1
0
1
No Up Advisory
Climb
Don’t Descend
Don’t Descend > 500
Don’t Descend > 1000
Don’t Descend > 2000
Not Used
Not Used
[4] Down Advisory
29
0
0
0
0
1
1
1
1
Bit
28
0
0
1
1
0
0
1
1
Meaning
27
0
1
0
1
0
1
0
1
No Down Advisory
Descend
Don’t Climb
Don’t Climb > 500
Don’t Climb > 1000
Don’t Climb > 2000
Not Used
Not Used
[5] The presence of a No Computed Data report in the SSM field indicates that the no RA exists or that information in
Bits 18 through 29 is unreliable. Therefore, no RA should be issued by the Display.
ARINC SPECIFICATION 429 PART 2 – Page 77
DATA STANDARDS
Label 270 03A – Propulsion Discrete Interface Unit
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
PDUI Self Test
P2/T2 Probe Heat
Spare
Idle Select
Air/Ground Switch
Opposite Engine Status
EEC to PDUI SDD
Spare
Spare
Spare
Spare
Spare
Spare
Ground Test Power
Spare
Spare
Spare
Spare
Spare
SSM
SSM
Parity (Odd)
Note:
[1] SDI
Bits
9
1
0
Coding
Bit Status
Function
Status
10
0
1
Left Engine
Right Engine
1
1
Failed
Heat Off
OK
Heat On
Minimum
Ground
Shut Down
Faulted
Approach
Air
Running
OK
X
X
X
X
X
X
Off
X
X
X
X
X
On
ARINC SPECIFICATION 429 PART 2 – Page 78
DATA STANDARDS
Label 270 03B
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
INS
VOR/LOC
ILS/Land
Land
Altitude Hold
Altitude Select
Mach
IAS
Vertical Speed
TURB
PMS
Captain’s F/D On and Select
F/O F/D On and Select
Course Transfer No. 1
Course Transfer No. 2
A/P Engage Manual
A/P Engage Command
Spare (All “0” States)
Word Validity
SSM
SSM
Parity (Odd)
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Not Selected
Invalid
Valid
ARINC SPECIFICATION 429 PART 2 – Page 79
DATA STANDARDS
Label 270 03D – Status Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
nd
Label 2 digit
Label 3rd digit
7
1
X
X
X
X
X
X
X
0
X
SDI
SDI
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Status Matrix
Status Matrix
Parity (Odd)
Bit
**11
*11
12
*13
**13
*14
**14
**15
*15
**16
*16
*17
**17
*18
**18
**19
*19
**20
*20
21
22
23
***23
24
25
26
27
28
29
Parameter
AVM System Fault
PAD
AVM System Fault
AVM Engine 1 Alert
Broadband Alert – Engine 1
AVM Engine 2 Alert
Broadband Alert – Engine 2
AVM Engine 1 Double Channel Fault
Pad
AVM Engine 2 Double Channel Fault
Pad
Pad
AVM Engine 1 Alert
Pad
AVM Engine 2 Alert
Engine 1 High Broadband Alert
Pad
Engine 2 High Broadband Alert
Pad
NVRAM Failure
Fault History Erase
Pad
Flight History Erase
Pad
Pad
Pad
Pad
Pad
Pad
*
**
***
B757 Pratt & Whitney and 737 CFM-56
B757 Rolls Royce Only
B737 CFM-56 Only
0
Notes
ARINC SPECIFICATION 429 PART 2 – Page 80
DATA STANDARDS
Label 270 03F – EEC Status
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
0
X
SDI
SDI
Pad
Pad
Pad
PDIU Status
Spare
Channel Select Mode
Primary Chan Manually Selected
N2 Droop Control Mode
Reverser System Status
Channel Controlling Status
2.5 Bleed System Failed
TCA Valve(s) Failed Closed
Case Cooling Valve Stuck
14th State Bleed System Failed
Channel Incapable (Failed)
Oil Cooling System Status
SVA System Failed
Starter Cutout Command
Spare
SSM
SSM
Parity (Odd)
Invalid
Secondary
Selected
Engaged
Inoperative
Controlling
Failed
Failed
Failed
Failed
Incapable
Faulted
Failed
Cutout
X
X
X
X
X
OK
Auto
Not Selected
Not Engaged
OK
Not Controlling
Operational
OK
OK
Operational
Capable
OK
Operational
Not Cutout
X
X
X
X
1
Note:
[1] Secondary channel only.
General Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 – Page 81
DATA STANDARDS
Label 270 114 Unusable, Empty and low Level Warning
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
0
1
X
Notes
0
X
SDI
SDI
Fuel On Board Unusable
Left Outer Tank Fuel Unusable
Right Outer Tank Fuel Unusable
Center Tank Fuel Unusable
Trim Tank Fuel Unusable
Act1 Fuel Unusable
Act2 Fuel Unusable
RCT Fuel Unusable
Left Outer Empty
Right Outer Empty
Center Tank Empty
Trim Tank Empty
Act1 Empty
Act2 Empty
RCT Empty
Inner 1+2 Tanks Low Level
Inner 3+4 Tanks Low Level
All Inner Tanks Low Level
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
X
X
X
X
X
X
1
1
Unusable
Unusable
Unusable
Unusable
Unusable
Unusable
Unusable
Unusable
Empty
Empty
Empty
Empty
Empty
Empty
Empty
Low
Low
Low
Usable
Usable
Usable
Usable
Usable
Usable
Usable
Usable
Not Empty
Not Empty
Not Empty
Not Empty
Not Empty
Not Empty
Not Empty
Not Low
Not Low
Not Low
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
[2]
Bit 10
0
1
SSM
Bit 31
0
0
1
1
Bit 9
1
0
Bit 30
0
1
0
1
Destination
Transmission To Computer 1
Transmission To Computer 2
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 82
DATA STANDARDS
Label 270 115 – Stored TACAN Control Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
X
X
X
X
Label 3rd digit
0
SEL
MEM
MEM
Tune
Pad
Pad
MLS Select
MLS Select
BCD Channel Code Units
BCD Channel Code Units
BCD Channel Code Units
BCD Channel Code Units
HEX Channel Code Tens
HEX Channel Code Tens
HEX Channel Code Tens
HEX Channel Code Tens
TST
X/Y
Mode Control
Mode Control
INT
AGC
STAT
Parity (Odd)
Notes:
[1] TACAN/MLS Select
Bits
Meaning
15
16
0
0
TACAN
1
0
MLS W Mode
0
1
Not Used
1
1
MLS Z Mode
[2] Mode Control
Bits
Meaning
27
28
0
0
REC
1
0
T/R
0
1
A/A REC
1
1
A/A T/R
Notes
0
TCAN 1
In Bearing Memory
In Range Memory
Autotune
X
X
X
TACAN 2
No Bearing Memory
No Range Memory
No Autotune
`
1
1
Test
X
No Test
Y
2
2
Normal
Enable
No Computed Data
Inverse
Disable
Valid Data
ARINC SPECIFICATION 429 PART 2 – Page 83
DATA STANDARDS
Label 270 142 Aircraft Category
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
0
Coding
Bit Status
1
0
X
X
X
X
X
X
X
X
Notes
SDI
SDI
A/C Vehicle category
(LSB)
(within category set A, B, C, or D
(MSB)
Aircraft/Vehicle Category Set (LSB)
Aircraft/Vehicle Category Set (MSB)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SSM
SSM
Parity (odd)
Note:
[1] Bits 30 and 31 have the meaning defined in ARINC 429 Part 1,
Section 2.1.5.3 for the status matrix in discrete data words.
Note [2]
Aircraft/Vehicle Category Set:
Bit 15
0
0
1
1
2
2
Bit 14
0
1
0
1
Meaning
Set A
Set B
Set C
Set D
Aircraft/Vehicle Category Within
Category Set:
Set A
0 No Aircraft Category Information
1 Small (<15500 lbs)
2 Medium (15500 to 75000 lbs
3 Large (75000 to 190000 lbs
4 Extra Large 190000 to 300000 lbs
5 Heavy (>30000 Lbs
6 High performance (>5g acceleration
7 RotoCraft
Set B
0 No Aircraft Category Information
1 Glider/Sailplane
2 Lighter-Than-air
3 Parachutist/Skydiver
4 Ultlight/Hanglider/Paraglider
5 Unassigned
6 Unmanned aerial vehicle
7 Space/Transatmospheric vehicle
1
1
Set C
0
1
2
3
4-7
No Aircraft Category
Information
Surface vehicle- emergency
vehicle
Surface vehicle- service vehicle
Fixed ground or tethered
obstruction
Unassigned
Set D
(All codes in Set D are unassigned)
ARINC SPECIFICATION 429 PART 2 – Page 84
DATA STANDARDS
Label 270 144 Display Mode
Bit
Coding
Bit Status
Function
Label 1st digit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
1
X
Notes
0
X
nd
Label 2 digit
7
Label 3rd digit
2
X
X
X
X
X
X
X
X
SDI
SDI
Spare
Spare
Spare
Spare
Terrain Display Caution
Terrain Display Warning
Weather/Terrain Key State (LSB
Weather/Terrain Key State (MSB)
Relative/Pressure Altitude Key State
Range Ring Displayed
Ground Track Vectors Displayed
Flight Plan Displayed
Waypoint IDs Displayed
Airports Displayed
Flight IDs Displayed
DCL Key Just Pressed
Display Mode (LSB
Display Mode
Display Mode (MSB)
SSM
SSM
Parity
1
1
2
3
3
3
3
3
3
4
5
5
5
6
6
Notes:
[1]
0 = Neither WX nor terrain displayed,
2 = Terrain displayed,
1= WX displayed,
3 = Reserved.
[2]
0 = Relative Altitude Mode,
1 = Pressure Altitude Mode
[3]
0 = Not Displayed,
1 = Displayed
[4]
0 = DCL key initial state,
1 = DCL key just pressed state
[5]
0 = Sector mode with traffic,
2 = Sector mode without traffic
1 = Compass rose mode
3-7 = reserved
[6]
Sign/Status Matrix (SSM):
Bits
31
0
0
1
1
30
0
1
0
1
Meaning
Normal Operation
No Computed Data
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 85
DATA STANDARDS
Label 271 005 – AHRS Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
MSU Fail
RMCU Rail
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
No VOR/DME #2 Input
SSM
SSM
Parity (Odd)
`
Yes
Yes
No
No
ARINC SPECIFICATION 429 PART 2 – Page 86
DATA STANDARDS
Label 271 006 – ADS Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Zero Angle of Attack SSEC
Angle of Attach Sensor Status
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
No VOR/DME #2 Input
SSM
SSM
Parity (Odd)
Yes
Fail
No
Good
ARINC SPECIFICATION 429 PART 2 – Page 87
DATA STANDARDS
Label 271 018 – TCAS Coordination Discrete (MTB, CVC, VRC, CHC, HRC, HSB, VSB)
Transponder to TCAS – Bus 1 Word 1
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
X
X
X
X
Label 3rd digit
X
X
1
MTB
CVC
CVC
VRC
VRC
CHC
CHC
CHC
HRC
HRC
HRC
HSB
HSB
HSB
HSB
HSB
VSB
VSB
VSB
VSB
Pad
SSM
SSM
Parity (Odd)
Notes
0
X
RF MSG BIT 42
43
44
45
46
47
48
49
50
51
52
56
57
58
59
60
61
62
63
64
Note:
[1] ARINC 429 data word fields for which there are corresponding RF fields are transmitted with the MSB first in
order to maintain consistency between RF and ARINC 429 data. Normal ARINC 429 protocol calls for the
transmission of the LSB of the field first.
1
ARINC SPECIFICATION 429 PART 2 – Page 88
DATA STANDARDS
Label 271 01A – EEC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Pad
Pad
Pad
Pad
Engine Model Code
Engine Model Code
Spare
Spare
Spare
Spare
A/C Pack
A/C Pack Flow Mode
Air Driven Pump
Wing Anti-Icing
Cowl Anti-Icing
Isolation Valve
Approach Idle
Tt2 Probe Heat
Spare
SSM
SSM
Parity (Odd)
Notes:
[1] Model
0 1 2 3
1 0 1 0
1 1 0 0
[2] Boeing 767 only.
1
1
On
Hi
On
On
On
Open
Selected
On
Off
Lo
Off
Off
Off
Closed
Not Selected
Off
X
2
2
2
2
2
2
2
2
ARINC SPECIFICATION 429 PART 2 – Page 89
DATA STANDARDS
Label 271 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Pad
Pad
Pad
Reverser Deploy Command
Turbine Cooling Air Valve Solenoid
Fuel-Oil Heat Ex Bypass Valve Sol
Spare
Spare
14th Stage Bleed Command
Spare
Spare
Spare
Spare
T/L Interlock Actuator Command
Reserved (Spare Relay Command)
Engine Type Code
Engine Type Code
Engine Type Code
Engine Type Code
SSM
SSM
Parity (Odd)
On
On
On
X
X
X
X
X
Off
Off
Off
Closed
Open
Block Forward
Block Reverse
X
X
X
X
X
X
X
Notes:
[1] 0000 = PW2037, Other Codes Invalid
[2] Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
1
1
1
1
ARINC SPECIFICATION 429 PART 2 – Page 90
DATA STANDARDS
Label 271 033
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
High Pressure Compressor Exit Pressure
Fan Inlet Total Pressure
Low Pressure Compressor Exit Pressure
Exhaust Gas Total Pressure
Thermocouples
CPU Self Test
A/D Converter Self-Test
ARINC 429 Self-Test
Stator Vane Angle
Low Pressure Comp. Bleed Valve Pos.
Fuel Flow
Power Supplies
Tachometers
Resistive Temperature Probes
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
SSM
SSM
Parity (Odd)
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Good
Good
Good
Good
Good
Good
Good
Good
Godo
Good
Good
Good
Good
Good
ARINC SPECIFICATION 429 PART 2 – Page 91
DATA STANDARDS
Label 271 035 (Reserved) – TCAS Horizontal RA Data Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
X
X
X
X
Label 3rd digit
X
X
1
X
Parity (Odd)
Notes
0
ARINC SPECIFICATION 429 PART 2 – Page 92
DATA STANDARDS
Label 271 03A
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
ECS Pack-L
ECS Pack-R
ECS Pack Demand-L
ECS Pack Demand-R
PNEU Shutoff Valve-L
PNEU Shutoff Valve-R
Isolation Valve
Spare
Wing Anti-Ice-L
Wing Anti-Ice-R
Cool Anti-Ice-L
Cool Anti-Ice-R
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
SSM
SSM
Parity (Odd)
On
On
Hi
Hi
Closed
Closed
Open
On
On
On
On
Off
Off
Lo
Lo
Open
Open
Closed
X
Off
Off
Off
Off
Note:
[1] Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according tot he
specific application.
ARINC SPECIFICATION 429 PART 2 – Page 93
DATA STANDARDS
Label 271 03B
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Flare Arm
Flare Engage
Glide Slope Capture
Go-Around Engage
Dual Engage
Triple Arm
Triple Engage
Rollout Engage
Nav Arm
Nav Capture
Pitch Wheel Enable
Turn Knob in Detent
Heading Hold A or C, and B
28 VDC Reference
Spare (Pad Bit)
Spare (Pad Bit)
Spare (Pad Bit)
Yaw Damper Engage
Word Validity
SSM
SSM
Parity (Odd)
Armed
Engaged
Engaged
Engaged
Armed
Armed
Engaged
Engaged
Armed
Engaged
Enabled
In Detent
Hold
Referenced
Engaged
Invalid
Not Armed
Not Engaged
Not Engaged
Not Engaged
Not Armed
Not Armed
Not Engaged
Not Engaged
Not Armed
Not Engaged
Not Enabled
Not in Detent
Not Hold
Not Referenced
X
X
X
Not Engaged
Valid
ARINC SPECIFICATION 429 PART 2 – Page 94
DATA STANDARDS
Label 271 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Pad
Pad
Pad
Reverser Deploy Command
Turbine Cooling Air Valve Solenoid
Fuel-Oil Heat Ex. Bypass Valve Sol.
Spare
Spare
14th Stage Bleed Command
Spare
Spare
Spare
Spare
T/L Interlock Actuator Command
Reserved (Spare Relay Command)
Engine Type Code
Engine Type Code
Engine Type Code
Engine Type Code
SSM
SSM
Parity (Odd)
On
On
On
Closed
Block Forward
X
X
X
X
X
Off
Off
Off
Open
X
X
X
X
Block Reverse
X
X
X
X
X
X
X
Notes:
[1] 0000 = PW2037, Other Codes Invalid
[2] Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
1
1
1
1
ARINC SPECIFICATION 429 PART 2 – Page 95
DATA STANDARDS
Label 271 114 Fuel Transfer Indication
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
1
X
2
Notes
0
X
nd
Label 2 digit
7
Label 3rd digit
1
X
X
X
X
X
X
SDI
SDI
Left Outer Tank To Inner Tank 1 Auto
Left Outer Tank To Inner Tank 1 Abnormal
Left Outer Tank To Inner Tank 1 Manual
Left Outer Tank To Inner Tank 2 Auto
Left Outer Tank To Inner Tank 2 Abnormal
Left Outer Tank To Inner Tank 2 Manual
Right Outer Tank To Inner Tank 3 Auto
Right Outer Tank To Inner Tank 3 Abnormal
Right Outer Tank To Inner Tank 3 Manual
Right Outer Tank To Inner Tank 4 Auto
Right Outer Tank To Inner Tank 4 Abnormal
Right Outer Tank To Inner Tank 4 Manual
Inner Tank 1 To Trim Tank Auto Transfer
Inner Tank 1 To Trim Tank Abnormal Transfer
Inner Tank 2 To Trim Tank Auto Transfer
Inner Tank 2 To Trim Tank Abnormal Transfer
Inner Tank 3 To Trim Tank Auto Transfer
Inner Tank 3 To Trim Tank Abnormal Transfer
Manual Transfer Completed
SSM
SSM
Parity (Set to Give Odd Parity)
Auto
Abnormal
Manual
Auto
Abnormal
Manual
Auto
Abnormal
Manual
Auto
Abnormal
Manual
Auto
Abnormal
Auto
Abnormal
Auto
Abnormal
Completed
Not Auto
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Auto
Not Abnormal
Not Auto
Not Abnormal
Not Completed
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
[2] SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 96
DATA STANDARDS
Label 271 142 Altitude Filter Limits Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
1
X
2
Notes
0
X
nd
Label 2 digit
7
Label 3rd digit
1
X
X
X
X
X
X
SDI
SDI
Upper display range
Upper display range
Upper display range
Upper display range
Upper display range
Upper display range
Upper display range
Upper display range
Lower display range
Lower display range
Lower display range
Lower display range
Lower display range
Lower display range
Lower display range
Lower display range
Show surface A/V
Reserved
Reserved
SSM
SSM
Parity (odd)
100ft
200ft
400ft
800ft
1600ft
3200ft
6400ft
12800ft
100ft
200ft
400ft
800ft
1600ft
3200ft
6400ft
12800ft
LSB
MSB
LSB
MSB
1
1
Sign Status Matrix (SSM)
Bits
31 30
0
0
0
1
1
0
1
1
Meaning
Normal Operation
No Computed Data
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 97
DATA STANDARDS
Label 271 144 Altitude Filter Settings
Bit
Coding
Bit Status
Function
1
Label 1st digit
2
2
3
Label 2nd digit
7
4
5
6
Label 3rd digit
1
7
8
9
SDI
10 SDI
11 Upper Display Range (LSB, 100 feet)
12 Upper Display Range (LSB, 100 feet)
13 Upper Display Range (400 feet)
14 Upper Display Range (800 feet)
15 Upper Display Range (1600 feet)
16 Upper Display Range (3200 feet)
17 Upper Display Range (6400 feet)
18 Upper Display Range (MSB, 12800 feet)
19 Lower Display Range (LSB, 100 feet)
20 Lower Display Range (200 feet)
21 Lower Display Range (400 feet)
22 Lower Display Range (800 feet)
23 Lower Display Range (1600 feet
24 Lower Display Range (3200 feet)
25 Lower Display Range (6400 feet)
26 Lower Display Range (MSB, 12800 feet)
27 Reserved
28 Altitude Filter Settings Mode (LSB)
29 Altitude Filter Settings Mode (MSB
30 SSM
31 SSM
32 Parity
Notes:
1
X
Notes
0
X
X
X
X
X
X
X
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
X
3
3
4
4
[1] Bits 11 to 18 hold an unsigned binary numeral giving the upper display range in 100-foot units. If the CDTI
display unit is in relative altitude mode (bit 19 of label 270 is zero), then this is the number shown above and to the
right of the “LVL” abbreviation in the lower right corner of the display. If the CDTI display unit is in pressure
altitude mode (bit 19 of label 270 is 1), then the number shown above and to the right of the “LVL” abbreviation is
the sum of the number in bits 11 to 18 of label 270 and the own-ship pressure altitude in 100-foot units.
[2] Bits 19 to 26 hold an unsigned binary numeral giving the lower display range in 100-foot units. If the CDTI display
unit is in relative altitude mode (bit 19 of label 270 is zero), then this is the number shown below and to the right of
the “LVL” abbreviation in the lower right corner of the display. If the CDTI display unit is in pressure altitude
mode (bit 19 of label 270 is 1), then the number shown below and to the right of the “LVL” abbreviation is the
difference, own-ship pressure altitude minus in 100-foot units minus the number in bits 19 to 26 of label 271.
[3] 0 = “Look Up” settings, 1 = “Look Down” settings,
2 = “Level (LVL)” settings,
3 = Present Value
[4] Sign/Status Matrix (SSM):
Bits
Meaning
31
30
0
0
Normal Operation
0
1
No Computed Data
1
0
Functional Test
1
1
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 98
DATA STANDARDS
Label 272 001 – FCC Automatic Throttle Modes Discrete Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Note:
Coding
Bit Status
Function
Label 1st digit
1
X
2
X
Label 2nd digit
7
X
X
X
2
X
Label 3rd digit
PERF
CLP
SPD
APR
LIM
FLP
SLT
N1
EPR
TO
FLX
MCT
CLB
CR
VNAV
IAS
MACH
ALT
TRK
RTD
MIN
SSM
SSM
Parity (Odd)
Notes
0
X
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Automatic throttle modes explanation on the next page
X
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
ARINC SPECIFICATION 429 PART 2 – Page 99
DATA STANDARDS
Automatic Throttle Modes Explanation
Bit No.
1-8
9
10
11
12
PERF
CLP
SPD
APR
13
LIM
14
15
16
FLP
SLT
N1
17
EPR
18
TO
19
20
21
22
23
FLX
MCT
CLB
CR
VNV
24
25
26
27
IAS
MACH
ALT
TRK
28
RTD
29
MIN
Function
Label 272 01
The performance submode of the VNV basic mode is in effect. Used with Bit 23.
The automatic throttles are clamped.
The automatic throttles are engaged in the speed select control mode.
The automatic throttles are engaged in the speed select mode and throttle control is limited by flap
or slat maximum speeds, or by engine limits (N1 or EPR), or by throttle low limit position.
Automatic throttle control is currently limited by flap or slat maximum speeds, or by engine limits
(N1 or EPR) or by throttle low limit position.
Used with Bit 13 to designate flat limit control currently in effect.
Used with Bit 13 to designate slat limit control currently in effect.
The automatic throttle are engaged in the N1 basic mode and controlling to a selected N1 limit
defined by Bits 18 through 22. Also used with Bit 13 and Bit 23 as the second word.
The automatic throttles are engaged in the EPR basic mode and controlling to a selected EPR limit
defined by Bits 18 through 22. Also, used with Bit 13 and Bit 23 as the second word.
The N1 or EPR take off thrust limit is currently in effect. Used with Bit 16 or 17. Also used with
Bit 28 for noise abatement annunciation.
The N1 or EPR maximum continuous thrust limit is currently in effect. Used with Bit 16 or 17.
The N1 or EPR maximum continuous thrust limit is currently in effect. Used with Bit 16 or 17.
The N1 or EPR climb thrust limit is currently in effect. Used with Bit 16 or 17.
The N1 or EPR cruise thrust limit is currently in effect. Used with Bit 16 or 17.
The automatic throttles are engaged in the vertical navigation mode and controlling in accordance
with a submode designated by Bits 24 through 27 and Bits 9, 16, and 17.
The IAS submode of the VNV basic mode is currently in effect. Used with Bit 23.
The Mach submode of the VNV basic mode is currently in effect. Used with Bit 23.
The altitude hold submode the VNV basic mode is currently in effect. Used with Bit 23
The climb (descent) path track submode of the VNV basic mode is currently in effect. Used with
Bit 23.
The automatic throttles are engaged in the retard control mode. Also used with Bit 18 for noise or
abatement annunciation.
The automatic throttles are engaged in the speed control mode and throttle control is limited to the
minimum alpha cruise speed.
ARINC SPECIFICATION 429 PART 2 – Page 100
DATA STANDARDS
Label 272 002 – FMC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
Notes
0
X
7
X
X
X
2
X
Label 3rd digit
X
X
SDI Bit 0
SDI Bit 1
Enable
100
200
400
800
Climb Rate Performance Limit
1600
3200
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
1500 FPM Climb Limit
2500 FPM Climb Limit
SSM
SSM
Parity (Odd)
Cannot Climb
Cannot Climb
Can Climb
Can Climb
ARINC SPECIFICATION 429 PART 2 – Page 101
DATA STANDARDS
Label 272 003 – FCC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
Notes
0
X
7
X
X
X
2
X
Label 3rd digit
X
X
SDI
SDI
Automatic Throttle Failure/Warning
APR
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
SSM
SSM
Parity (Odd)
Flag
Engaged
Normal
Not Engaged
1
Note:
[1] The automatic throttles are engaged in the speed select mode and throttle control is to the minimum alpha approach
speed.
ARINC SPECIFICATION 429 PART 2 – Page 102
DATA STANDARDS
Label 272 018 – TCAS Coordination Discrete (MID Part 1)
Transponder to TCAS – Bus 1 Word 2
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
Notes
0
X
7
X
X
X
2
X
Label 3rd digit
X
X
TCAS Broadcast Bit
MID Bit A 1 – MID (Part 1) (MSB)
MID Bit A 2
MID Bit A 3
MID Bit A 4
MID Bit A 5
MID Bit A 6
MID Bit A 7
MID Bit A 8
MID Bit A 9
MID Bit A 10
MID Bit A 11
MID Bit A 12
MID Bit A 13
MID Bit A 14
MID Bit A 15
MID Bit A 16
Pad
Pad
Pad
Pad
SSM
SSM
Parity (Odd)
1
65 RF MSG Bit
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Notes:
[1] TCAS Broadcast Bit
Bit 9
0
1
Meaning
Coordination Message
Received TCAS Broadcast
[2] ARINC 429 data word fields for which there are corresponding RF fields are transmitted with the MSB first in
order to maintain consistency between RF and ARINC 429 data. Normal ARINC 429 protocol calls for the
transmission of the LSB of the field first.
ARINC SPECIFICATION 429 PART 2 – Page 103
DATA STANDARDS
Label 272 01A – EEC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
Notes
0
X
7
X
X
X
2
X
Label 3rd digit
X
X
SDI
SDI
Pad
Pad
Pad
Pad
TCC Stg 2 Sol
TCC Stg 1 Sol
TCC Stg 3 Sol
TCC Stg 1 Valve
Spare
TCA-A-Air Valve
TCA-B-Air Valve
Spare
Spare
Spare
Spare
Spare
Spare
Spare
Spare
SSM
SSM
Parity (Odd)
On
On
On
Open
Open
Open
X
X
X
X
Off
Off
Off
Closed
X
Closed
Closed
X
X
X
X
X
X
X
X
ARINC SPECIFICATION 429 PART 2 – Page 104
DATA STANDARDS
Label 272 025 – Discrete Data No. 1
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
X
7
X
X
X
2
X
Label 3rd digit
X
X
SDI
SDI
Display Mode Selected
Display Mode Selected
Display Mode Selected
Display Mode Selected
Display Mode Selected
Display Mode Selected
CP SUM Check
NAV Mode Selected
ADF/VOR Vectors
DF-NAV AIDS
DF-Waypoint
DF-Route Data
DF-Airports
Map Orient
VOR/ILS Orient
RA Alert Reset
NAV Orient
Full Compass Rose
Pad
SSM
SSM
Parity (Odd)
1
1
1
1
1
1
Not OK
Selected
Vectors
Selected
Selected
Selected
Selected
Track Up
Track Up
Reset
Track Up
Full Rose
Note:
[1]
11
1
0
0
0
0
0
0
Notes
0
12
0
1
0
0
0
0
0
13
0
0
1
0
0
0
0
Bits
14
0
0
0
1
0
0
0
15
0
0
0
0
1
0
0
16
0
0
0
0
0
1
0
Selected Function
Map Mode Selected
VOR Mode Selected
ILS Mode Selected
Plan Mode Selected
VOR Full Selected
ILS Full Selected
No Selection
(All other bit patterns should be considered invalid)
OK
Not Selected
No Vectors
Not Selected
Not Selected
Not Selected
Not Selected
Heading Up
Heading Up
Not Reset
Heading Up
Exp Rose
ARINC SPECIFICATION 429 PART 2 – Page 105
DATA STANDARDS
Label 272 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Note:
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
X
7
X
X
X
2
X
Label 3rd digit
SDI
SDI
Pad
Pad
Pad
N1 Loop
N2 Loop
N2 Topping Loop
PB Topping Loop
PB Topping Loop Minimum
EPR Loop
Accel Schedule Loop
Decel Schedule Loop
Spare
Backup Mode
2.5 BLD 2-Position Mode
Spare
Spare
Spare
Spare
Spare
SSM
SSM
Parity (Odd)
Notes
0
X
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
X
X
X
X
X
X
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
X
Not Engaged
Not Engaged
X
X
X
X
X
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to
the specific application.
ARINC SPECIFICATION 429 PART 2 – Page 106
DATA STANDARDS
Label 272 03A
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Note:
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
Notes
0
X
7
X
X
X
2
X
Label 3rd digit
X
X
SDI
SDI
RAM Inflight Monitor
ROM Inflight Monitor
WDT Inflight Monitor
Discrete Output 1 IFM
Discrete Output 1 IFM
Serial Data Input – Primary
Serial Data Input – Secondary
Spare
Discrete Input IFM
Power Up RAM
BIT:RAM
BIT:ROM
BIT:Discrete Output 1
BIT:Discrete Output 2 (Prov)
BIT:Discrete Input
BIT:Serial Data
BIT:Watchdog Timer
Spare
Spare
SSM
SSM
Parity (Odd)
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
OK
X
OK
OK
OK
OK
OK
OK
OK
OK
OK
X
X
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to
the specific application.
ARINC SPECIFICATION 429 PART 2 – Page 107
DATA STANDARDS
Label 272 03B
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
Notes
0
X
7
X
X
X
2
X
Label 3rd digit
X
X
SDI
SDI
Trim Wheel Enable
Altitude Select Capture
Flare Arm
Flare Engage
Glide Slope Arm
Glide Sope Engage
Go-Around Engaged
Heading Select
NAV Engage
Localizer Capture
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Word Validity
SSM
SSM
Parity (Odd)
Enabled
Engaged
Armed
Engaged
Armed
Engaged
Engaged
Selected
Engaged
Engaged
Not Enabled
Not Engaged
Not Armed
Not Engaged
Not Armed
Not Engaged
Not Engaged
Not Selected
Not Engaged
Not Engaged
Invalid
Valid
ARINC SPECIFICATION 429 PART 2 – Page 108
DATA STANDARDS
Label 272 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Note:
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
1
X
X
7
X
X
X
2
X
Label 3rd digit
SDI
SDI
Pad
Pad
Pad
N1 Loop
N2 Loop
N2 Topping Loop
PB Topping Loop
PB Topping Loop Minimum
EPR Loop
Accel Schedule Loop
Decel Schedule Loop
Spare
Backup Mode
2.5 BLD 2-Position Mode
Spare
Spare
Spare
Spare
Spare
SSM
SSM
Parity (Odd)
Notes
0
X
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
X
X
X
X
X
X
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
X
Not Engaged
Not Engaged
X
X
X
X
X
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to
the specific application.
ARINC SPECIFICATION 429 PART 2 – Page 109
DATA STANDARDS
Label 272 05A - (A320) FQS - Fuel Density
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Note:
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
2
1
X
Coding
Bit Status
0
Notes
X
X
X
X
X
X
X
SDI
SDI
0.1 pf
1 pf
10 pf
100 pf
probe number (units)
probe number (units)
SSM
SSM
Parity (Odd)
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to
the specific application.
ARINC SPECIFICATION 429 PART 2 – Page 110
DATA STANDARDS
Label 272 114 Fuel Transfer Indication
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
2
1
X
Notes
0
X
nd
Label 2 digit
7
Label 3rd digit
2
X
X
X
X
X
X
SDI
SDI
Inner Tank 4 To Trim Tank Auto Transfer
Inner Tank 4 To Trim Abnormal Transfer
Outer To Inner Transfer Fault
Center To Inner Transfer Fault
Trim Tank To Inner Tank 1 Auto
Trim Tank To Inner Tank 1 Abnormal
Trim Tank To Inner Tank 2 Auto
Trim Tank To Inner Tank 2 Abnormal
Trim Tank To Inner Tank 3 Auto
Trim Tank To Inner Tank 3 Abnormal
Trim Tank To Inner Tank 4 Auto
Trim Tank To Inner Tank 4 Abnormal
Trim Tank To Center Tank Auto
Trim Tank To Center Tank Abnormal
Trim Tank To Center Tank Manual
Center Tank To Trim Tank Auto
Center Tank To Trim Tank Abnormal
RCT Transfer Fault
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Auto
Abnormal
Fault
Fault
Auto
Abnormal
Auto
Abnormal
Auto
Abnormal
Auto
Abnormal
Auto
Abnormal
Manual
Auto
Abnormal
Fault
Not Auto
Not Abnormal
Not Fault
Not Fault
Not Auto
Not Abnormal
Not Auto
Not Abnormal
Not Auto
Not Abnormal
Not Auto
Not Abnormal
Not Auto
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Fault
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
[2] SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 – Page 111
DATA STANDARDS
Label 272 144 Target Selection Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
Notes
1
X
2
0
X
nd
Label 2 digit
7
Label 3rd digit
2
X
X
X
X
X
X
X
X
SDI
SDI
Selected Target Number (LSB)
Selected Target Number
Selected Target Number
Selected Target Number
Selected Target Number
Selected Target Number
Selected Target Number
Selected Target Number
Selected Target Number (MSB)
Reserved
Reserved
Target Selection State
Selected Target Change
Target Selection Failure
Reserved
Reserved
Action Taken
Action Taken
Action Taken
SSm
SSM
Parity
1
2
3
4
4
4
5
5
Notes:
[1]
0 = no target selected,
1 = a target is currently selected
[2]
0 = no change in selected target,
1 = change in selected target
[3]
0 = okay,
1 = target selection failure
[4]
0 = no action,
1 = select the target, 2 = add to favored target list,
3 = remove from favored target list,
4 = delete entire list, 5-7 = reserved
[5]
Sign/Status Matrix (SSM):
Bits
31
0
0
1
1
30
0
1
0
1
Meaning
Normal Operation
No Computed Data
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 - Page 112
DATA STANDARDS
Label 273 001 - FCC Arm Modes Discrete Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
3
1
X
Notes
0
X
X
X
X
X
X
X
Unassigned
Unassigned
Test
ALT
FMC
LNAV
VNAV
LOC
Back Course
Appr. 2
Land 2
Land 1
Land 3
Glideslope
VOR
Climb
Descent
Unassigned
Unassigned
Unassigned
Unassigned
SSM
SSM
Parity (Odd)
Requested
Armed
Armed
Armed
Armed
Engaged
Engaged
Engaged
Engaged
Armed
Armed
Armed
Armed
Armed
Armed
Not Requested
Not Armed
Not Armed
Not Armed
Not Armed
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Armed
Not Armed
Not Armed
Not Armed
Not Armed
Not Armed
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Note [1] Arm Modes Explanation
Bit
1-8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
2629
Function
Label 273 001
TEST
ALT
FMC
LNAV
VNAV
LOC
BACK COURSE
APPR
LAND 2
LAND 1
LAND 3
GLIDE SLOPE
VOR
CLIMB
DESCENT
TBD
A test of interfacing systems has been requested.
The Latitude preselect mode has been armed.
The Lateral and vertical navigation modes of the flight management system have been armed.
The Lateral navigation submode of the FMS is armed.
The vertical navigation submode of the FMS is armed.
The Localizer mode has been armed.
The Localizer back course mode has been armed.
The approach mode has been armed.
The autoload mode is armed on FCC No. 2.
The autoload mode is armed on FCC No. 1.
The autoload mode is armed on FCC No. 3.
The glideslope mode has been armed.
The VOR mode has been armed.
The climb submode of the VNV basic mode is armed.
The Descent submode of the VNV basic mode is armed.
ARINC SPECIFICATION 429 PART 2 - Page 113
DATA STANDARDS
Label 273 003 - TCC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
nd
Label 2 digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
3
SDI
SDI
No bleed air
One air conditioning pack
Two air conditioning packs
Three air conditioning packs
Half wing anti-icing
Total wing anti-icing
Engine cowling anti-icing
Engine operating condition (Engine Out)
Speed Brake Position - retract
Speed Brake Position - 1/3
Speed Brake Position - 2/3
Speed Brake Position - full
Landing gear position
Slat position - retract
Slat position - take off
Slat position - Land
Electronic Engine Control On-Off No. 1
Electronic Engine Control On-Off No. 2
Electronic Engine Control On-Off No. 3
SSM
SSM
Parity (Odd)
X
X
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
On
On
On
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Off
Off
Off
ARINC SPECIFICATION 429 PART 2 - Page 114
DATA STANDARDS
Label 273 018 - TCAS Mode S Ground Uplink (SLC, ILS) Word – Transponder To TCAS - Bus 1 Word 3
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
2
Notes
0
X
Label 2nd digit
X
X
X
7
Label 3rd digit
X
3
X
X
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
SLC (MSB)
SLC
SLC
SLC (LSB)
ILS
ILS
ILS
ILS
SSM
SSM
Parity (Odd)
1,2,3
1,2,3
1,2,3
1,2,3
2
2
2
2
Notes:
[1] Sensitivity Level Command (SLC)
[2] This data is received from the ground station in data Words UF 20 and UF 21.
[3] ARINC 429 data word fields for which there are Corresponding RF fields are transmitted with the MSB first in order to
maintain consistency between RF and ARINC 429 data. The normal ARINC 429 Protocol calls for the transmission of the LSB
of the field first
22
0
0
0
0
0
0
0
0
1
1
1
23
0
0
0
0
1
1
1
1
0
1
1
Bits
24
0
0
1
1
0
0
1
1
0
to
1
1
Meaning
25
0
1
0
1
0
1
0
1
0
SLC 0
SLC 1
SLC 2
SLC 3
SLC 4
SLC 5
SLC 6
SLC 7
Not Assigned
0
1
Cancel Previous Level Command
ARINC SPECIFICATION 429 PART 2 - Page 115
DATA STANDARDS
Label 273 025 - Discrete Data No. 2
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
2
X
nd
Label 2 digit
X
X
X
7
Label 3rd digit
X
3
X
X
SDI
SDI
Pitch Ref
Pitch Ref
Pitch Ref
Pitch Ref
Pitch Ref
Pitch Ref
Pitch Ref
Pitch Ref
Pitch Ref
Flight Path Data
Pad
FPA Disable
Weather Radar Data Select
Range Selected
On
Off
SEL
Off
X
On
Not SEL
1
1
1
1
1
1
(See Range Table)
SSM
SSM
Parity (Odd)
Note:
[1]
Notes
0
Range Table
Bits
Range Selected
24
25
26
27
28
29
1
0
0
0
0
0
5 MILES (not used)
0
1
0
0
0
0
10 miles
0
0
1
0
0
0
20 miles
0
0
0
1
0
0
40 miles
0
0
0
0
1
0
80 miles
0
0
0
0
0
1
160 miles
0
0
0
0
0
0
320 miles
(All other bit patterns are considered invalid)
ARINC SPECIFICATION 429 PART 2 - Page 116
DATA STANDARDS
Label 273 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
1
X
X
X
X
X
Label 3rd digit
X
3
SDI
SDI
Pad
Pad
Pad
P4.9 Interface
PB Interface
P2 (Pamb) Interface*
CJC Interface
T2 Interface
T4.9 Interface
Tfuel/Toil Interface
A/D Interface
RES/LVDT Interface
SVA Interface
N1 Interface
N2 Interface
P4.9 Sensor PROM
P2 (Pamb) Sensor PROM*
PB Sensor PROM
Background Execution
SSM
SSM
Parity (Odd)
Notes
0
X
X
X
X
X
X
X
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Not Executing
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Executing
X
X
*
Primary channel uses P2; Secondary channel uses Pamb
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to
the specific application.
ARINC SPECIFICATION 429 PART 2 - Page 117
DATA STANDARDS
Label 273 035 - TCAS Output Discrete (ARA, RAC) TCAS to Transponder and Displays - Bus 2 Word 1
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
2
X
nd
Label 2 digit
X
X
X
7
Label 3rd digit
X
3
Pad
Pad
Pad
ARA
ARA
ARA
ARA
ARA
ARA
ARA
ARA
ARA
ARA
ARA
ARA
ARA
ARA
RAC
RAC
RAC
RAC
SSM
SSM
Parity (Odd)
X
X
RF MSG BIT
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Note:
[1]
Notes
0
Sent by own transponder in DF 16, 20, and 21.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
ARINC SPECIFICATION 429 PART 2 - Page 118
DATA STANDARDS
Label 273 03B
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
2
X
Label 2nd digit
X
X
X
7
Label 3rd digit
X
3
SDI
SDI
A/P Red Warning Lights
A/P Servo System Pitch/Roll
A/P Servo System Yaw
A/P Camout Pitch
A/P Camout Roll
A/P Camout Yaw
A/P Confidence Test
Spare (Pad Bit)
Spare (Pad Bit)
A/T Red Warning Lights
A/T Speed Flag
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
Spare (All “0” States)
SSM
SSM
Parity (Odd)
Notes
0
X
X
Warn
Failed
Failed
Camout
Camout
Camout
Failed
Normal
Normal
Normal
Normal
Normal
Normal
Passed
X
X
Warn
Flag
Normal
Normal
Invalid
Valid
ARINC SPECIFICATION 429 PART 2 - Page 119
DATA STANDARDS
Label 273 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
*
Note:
Coding
Bit Status
Function
Label 1st digit
2
nd
Label 2 digit
7
1
X
Notes
0
X
X
X
X
Label 3rd digit
X
3
X
X
SDI
SDI
Pad
Pad
Pad
P4.9 Interface
Failed
PB Interface
Failed
P2 (Pamb) Interface*
Failed
CJC Interface
Failed
T2 Interface
Failed
T4.9 Interface
Failed
Tfuel/Toil Interface
Failed
A/D Interface
Failed
RES/LVDT Interface
Failed
SVA Interface
Failed
N1 Interface
Failed
N2 Interface
Failed
P4.9 Sensor PROM
Failed
P2 (Pamb) Sensor PROM*
Failed
PB Sensor PROM
Failed
Background Execution
Not Executing
SSM
SSM
Parity (Odd)
Primary channel uses P2; Secondary channel uses Pamb
X
X
X
X
X
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Executing
X
X
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to
the specific application.
ARINC SPECIFICATION 429 PART 2 - Page 120
DATA STANDARDS
Label 273 05A - (A-320) FQS - Right Wing
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Note:
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
3
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
0.1 pf
1 pf
10 pf
100 pf
probe number (units)
probe number (units)
SSM
SSM
Parity (Odd)
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to
the specific application.
ARINC SPECIFICATION 429 PART 2 - Page 121
DATA STANDARDS
Label 273 114 Memos and Status
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
3
1
X
Notes
0
X
X
X
X
X
X
SDI
SDI
Trim Line Damaged
Trim Line Isolation Fault
Trim Line Isolated
Trim Tank Isolation Fault
Trim Tank Isolated
Trim Tank Normally Shut
Act/Rct Line Damaged
Act Line Isolated
Act 1 Forward Mode Fault
Act 1 Mode Fault
Act 2 Forward Mode Fault
Act 2 Mode Fault
Act Line Isolation Fault
APU/ Trim Line Damaged
APU Line Isolation Fault
APU Line Isolated
APU Feed Path Open
Trim Tank Abnormally Open
Trim Tank Abnormally Shut
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Damaged
Fault
Isolated
Fault
Isolated
Normally Shut
Damaged
Isolated
Fault
Fault
Fault
Fault
Fault
Damaged
Fault
Isolated
Open
Abnormally Open
Abnormally Shut
Not Damaged
Not Fault
Not Isolated
Not Fault
Not Isolated
Not Normally Shut
Not Damaged
Not Isolated
Not Fault
Not Fault
Not Fault
Not Fault
Not Fault
Not Damaged
Not Fault
Not Isolated
Not Open
Not Abnormally Open
Not Abnormally Shut
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be reserved for
Source/Destination Identification (SDI). For data Source identification the relevant equipment should encode its Aircraft
Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode its Aircraft
Installation number as follows:
Bit 10
0
1
[2]
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 - Page 122
DATA STANDARDS
Label 274 001 - FCC Pitch Modes Discrete Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Note:
[1]
Bit
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
1
X
X
X
X
X
X
4
Descent
Climb
IAS
VNAV
ALT
V/S
Flare
Pitch G/A
Pitch T/0
Mach
Glideslope
Flap Speed
Min Speed
Track
Pitch Limit
Turb
CWS
Hold
Performance
Pitch
Capture
SSM
SSM
Parity
Notes
0
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
X
X
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Pitch Mode Explanations
IAS
VNAV
ALT
V/S
FLARE
PITCH G/A
PITCH T/0
MACH
GLIDE SLOPE
FLAP SPEED
MIN SPEED
TRACK
PITCH LIMIT
TURB
CWS
HOLD
PERFORMANCE
PITCH
CAPTURE
Function
The “Airspeed” reference mode is selected.
The pitch axis “Vertical Navigation” mode is selected.
The “Altitude” reference mode is selected.
The “Vertical Speed” reference mode is selected.
The “Flare” phase of the autoland mode is engaged.
The Pitch Axis “Go Around” mode is engaged.
The Pitch Axis is engaged in the “take Off” mode.
The “Mach” reference speed mode is selected.
The “Glideslope” guidance mode is selected.
The aircraft is being controlled to a speed which is limited by the flap setting.
The aircraft is being controlled to the minimum speed for its configuration.
The “Track” phase of the selected mode is engaged.
The aircraft pitch attitude is being controlled to the maximum value.
The pitch axis “Turbulence” penetration mode is engaged.
The pitch axis is engaged in the “CWS” mode.
The aircraft is holding a preselected value of altitude, attitude or speed.
The “Performance” submode of the Flight Management Vertical Navigation mode is engaged.
The Pitch Attitude Mode is selected.
The “Capture” phase of the selected mode is engaged.
ARINC SPECIFICATION 429 PART 2 - Page 123
DATA STANDARDS
Label 274 003 - TCC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 VNV
18
19
20
21
22
23 IAS
24 MACH
25 ALT
26 TRK
27 ATS
28 ATS
29 PERF
30
31
32
Coding
Bit Status
Function
Label 1st digit
2
nd
Label 2 digit
7
Label 3rd digit
1
X
X
X
X
X
X
4
DFA Mode Armed
DFA Mode Engaged
ATS OFF
ATS Armed
ATS Mode Engaged
Left Clutch Off
Right Clutch Off
Both Clutched Off
The automatic throttles are engaged in the vertical
Navigation mode and controlling in accordance with a
Submode designated by bits 23 thru 26 and 29.
ATS N1/EPR Mode Engaged
EPR
ATS Mach Mode Engaged
ATS Speed Mode Engaged
ATS Retard Activated
The IAS submode of VNV basic mode currently in effect.
Used with bit 17.
The Mach submode of VNV basic mode currently in
Effect. Used with bit 17.
The altitude hold submode of VNV basic mode is currently
in effect. Used with bit 17.
The climb (descent) path-track submode of the VNV basic
mode is currently in effect. Used with bit 17.
Alpha Mode Activated
Throttle Pusher Activated (Alpha Floor Protection)
The Performance submode of the VNV basic mode is in
effect. Used with bit 17.
SSM
SSM
Parity
Notes
0
Armed
Engaged
OFF
Armed
Engaged
Off
Off
Off
Engaged
X
X
Not Armed
Not Engaged
Passive
Passive
Passive
Passive
Passive
Passive
Not Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
In Effect
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not In Effect
In Effect
Not In Effect
In Effect
Not In Effect
In Effect
Not In Effect
Activated
Activated
In Effect
Not Activated
Not Activated
Not in Effect
ARINC SPECIFICATION 429 PART 2 - Page 124
DATA STANDARDS
Label 274 018 - TCAS Coordination Discrete (MID Part 2) – Transponder to TCAS - Bus 1 Word 8
Bit
Coding
Bit Status
Function
1
2
3
4
5
6
7
8
Label 1st digit
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
MID BIT A17
MIT BIT A18
MID BIT A19
MID BIT A20
MID BIT A21
MID BIT A22
MID BIT A23
MID BIT A24
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
SSM
SSM
Parity (Odd)
1
X
2
X
Label 2nd digit
X
X
X
X
7
Label 3rd digit
4
X
X
MID (Part 2)
(LSB)
Notes
0
RF MSG BIT
81
82
83
84
85
86
87
88
Note:
ARINC 429 data word fields for which there are corresponding RF fields are transmitted with the MSB first in order to
maintain consistency between RF and ARINC 429 data. Normal ARINC 429 protocol calls for the transmission of the
LSB of the field first.
ARINC SPECIFICATION 429 PART 2 - Page 125
DATA STANDARDS
Label 274 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
2
X
nd
Label 2 digit
X
X
X
X
7
Label 3rd digit
4
SDI
SDI
Pad
Pad
Pad
Parity Test Hardware
ROM Checksum
RAM Test
Instruction Test
High Speed Cross Link Text
Foreground Software Execution
Watchdog Timer
Spare
EAROM
ROM Parity Error Caused Reset
RAM Parity Error Caused Reset
Watchdog Timer Error Caused Reset
Status Buffer
Loss of Clock Caused Reset
SDD Output #1 W/A
SDD Output #2 W/A
SSM
SSM
Parity (Odd)
Notes
0
X
X
X
X
X
X
X
Error
Failed
Failed
Failed
Failed
Incorrect
Error
OK
OK
OK
OK
OK
Correct
OK
Failed
Yes
Yes
Yes
Failed
Yes
Failed
Failed
OK
No
No
No
OK
No
OK
OK
X
X
X
ARINC SPECIFICATION 429 PART 2 - Page 126
DATA STANDARDS
Label 274 035 - TCAS Output Discrete (SL, R1) – TCAS to Transponder and Displays - Bus 2 Word 2
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
2
X
Label 2nd digit
X
X
X
X
7
Label 3rd digit
4
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
SL (MSB)
SL
SL (LSB)
RI (MSB)
RI
RI
RI (LSB)
SSM
SSM
Parity (Odd)
Notes
0
X
X
RF MSG BIT
9
10
11
14
15
16
17
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
Notes:
[1]
Sent by own transponder in data word DF, 0, 16.
[2]
ARINC 429 data word fields for which there are corresponding RF fields are transmitted with the MSB first in
order to maintain consistency between RF and ARINC 429 data. Normal ARINC 429 protocol calls for the
transmission of the LSB of the field first.
ARINC SPECIFICATION 429 PART 2 - Page 127
DATA STANDARDS
Label 274 03B
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
2
X
nd
Label 2 digit
X
X
X
X
7
Label 3rd digit
4
SDI
SDI
Magnetic Heading flag
Localizer Flag
Glide Slope Flag
Low Range Radio Altimeter
ILS Limit Warn
ILS Frequency Select
INS Altitude Secondary Flags
INS True Heading Flags
INS HSI Nav Warn
CADC True Airspeed Flags
CADC Computer Airspeed Flags
CADC Corrected Altitude Flags
CADC Uncorrected Altitude Flag
CADC Mach Flag
Altitude Rate Module Flag
Spare (Pad Bit)
Spare (Pad Bit)
Spare (Pad Bit)
Word Validity
SSM
SSM
Parity (Odd)
Notes
0
X
X
Flag
Flag
Flag
Flag
Warn
Selected
Flag
Flag
Warn
Flag
Flag
Flag
Flag
Flag
Flag
Invalid
Normal
Normal
Normal
Normal
Not Selected
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
X
X
X
Valid
ARINC SPECIFICATION 429 PART 2 - Page 128
DATA STANDARDS
Label 274 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
2
X
Label 2nd digit
X
X
X
X
7
Label 3rd digit
4
SDI
SDI
Pad
Pad
Pad
Parity Test Hardware
ROM Checksum
RAM Test
Instruction Test
High Speed Cross Link Text
Foreground Software Execution
Watchdog Timer
Spare
EAHOM
ROM Parity Error Caused Reset
RAM Parity Error Caused Reset
Watchdog Timer Error Caused Reset
Status Buffer
Loss of Clock Caused Reset
SDD Output #1 W/A
SDD Output #2 W/A
SSM
SSM
Parity (Odd)
Notes
0
X
X
X
X
X
X
X
Error
Failed
Failed
Failed
Failed
Incorrect
Error
OK
OK
OK
OK
OK
Correct
OK
Failed
Yes
Yes
Yes
Failed
Yes
Failed
Failed
OK
No
No
No
OK
No
OK
OK
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
ARINC SPECIFICATION 429 PART 2 - Page 129
DATA STANDARDS
Label 274 05A - (A320) FQS - Center
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
4
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
0.1 pf
1 pf
10 pf
100 pf
probe number (units)
probe number (units)
SSM
SSM
Parity (Odd)
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 - Page 130
DATA STANDARDS
Label 274 0C5 - EFIS CP
Bit
Coding
Bit Status
Function
1
1
Label 1st digit
2
3
Label 2nd digit
4
5
6
Label 3rd digit
7
8
9
SDI
10 SDI
11 Spare
12 Spare
13 Spare
14 Spare
15 Spare
16 Spare
17 BARO SEL IN
18 BARO SEL HPA
19 BARO SEL MTRS
20 FPV
21 Metric ALT
22 WXR Data
23 MAP Range
24 MAP Range
25 MAP Range
26 MAP Range
27 MAP Range
28 MAP Range
29 MAP Range
30 SSM
31 SSM
32 Parity (Odd)
Notes:
[1]
[2]
2
7
4
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
Map Range Matrix
Bits
29 28 27 26 25
0
0
0
0
0
0
0
0
0
1
0
0
0
01
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
24
1
0
0
0
0
0
0
0
23
0
0
0
0
0
0
0
1
Range
(Miles)
5
10
20
40
80
160
320
640
SSM Matrix
Bits
31
0
0
Notes
0
30
0
1
Valid Data (WXR)
Invalid Data (WXR)
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
Not SEL
1
1
1
1
1
1
1
2
2
ARINC SPECIFICATION 429 PART 2 - Page 131
DATA STANDARDS
Label 274 114 Fuel Transfer Indication
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
4
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
Center Tank To Inner Tank 1 Auto
Center Tank To Inner Tank 1 Abnormal
Center Tank To Inner Tank 1 Manual
Center Tank To Inner Tank 2 Auto
Center Tank To Inner Tank 2 Abnormal
Center Tank To Inner Tank 2 Manual
Center Tank To Inner Tank 3 Auto
Center Tank To Inner Tank 3 Abnormal
Center Tank To Inner Tank 3 Manual
Center Tank To Inner Tank 4 Auto
Center Tank To Inner Tank 4 Abnormal
Center Tank To Inner Tank 4 Manual
Inner Tanks 1 & 4< 13t
Inner Tank 1 To Inner Tank 2 Auto
Inner Tank 1 To Inner Tank 2 Abnormal
Inner Tank 4 To Inner Tank 3 Auto
Inner Tank 4 To Inner Tank 3 Abnormal
Act Isolation Fault
Trim Feed Latch
SSM
SSM
Parity (Set to Odd Parity)
1
1
Auto
Abnormal
Manual
Auto
Abnormal
Manual
Auto
Abnormal
Manual
Auto
Abnormal
Manual
< 13t
Auto
Abnormal
Auto
Abnormal
Fault
Latched
Not Auto
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Manual
>13t
Not Auto
Not Abnormal
Not Auto
Not Abnormal
Not Fault
Not Latched
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be reserved for
Source/Destination Identification (SDI). For data Source identification the relevant equipment should encode its Aircraft
Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode its Aircraft
Installation number as follows:
Bit 10
0
1
[2]
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Bit 31
0
0
1
1
Bit 30`
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 - Page 132
DATA STANDARDS
Label 275 001 - FCC Roll Modes Discrete Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
Unassigned
Unassigned
LNAV
HDG HOLD
HDG SEL
B/COURSE VOR
LOC
ROLLOUT
ROLL T.O.
ROLL G/A
Unassigned
WINGS LEVEL
CAPTURE
VOR
TRACK
Unassigned
Unassigned
Unassigned
Unassigned
ALIGN
CWS
SSM
SSM
Parity (Odd)
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
Not Requested
1
1
1
1
1
1
1
1
Requested
Requested
Not Requested
Not Requested
1
1
Note:
[1]
Roll Mode Explanations
Bit
11
12
13
14
15
16
17
18
20
21
22
23
28
29
LNAV
HDG HOLD
HDG SEL
B/COURSE VOR
LOC
ROLL OUT
ROLL T.O.
ROLL G/A
WINGS LEVEL
CAPTURE
VOR
TRACK
ALIGN
CWS
Function
The “Lateral Navigation” mode is selected.
The “Heading Hold” mode is engaged.
The “Heading Select” mode is engaged.
The “Backcourse” or “VOR” mode is selected.
The “Localizer” guidance mode is selected.
The “Roll Out” phase of the autoland mode is engaged.
The Roll Axis “Take Off” mode is engaged.
The Roll Axis “Go Around” mode is engaged.
The Roll Axis “Turbulence” penetration mode is engaged.
The “Capture” phase of the selected mode is engaged.
The “VOR” mode is selected.
The “Track” phase of the selected mode is engaged.
The “Align” phase of the autoland mode is engaged.
The Roll Axis “CWS” mode is engaged.
1
1
1
1
ARINC SPECIFICATION 429 PART 2 - Page 133
DATA STANDARDS
Label 275 003 - TCC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 LIM
17
18
19
20
21
22
23 FLP
24
25 SLT
26 N1
27
28
29 EPR
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
Engine Type 1
Engine type 2
Engine Type 3 Encoded to define one of 32 types
Engine Type 4
Engine Type 5
Automatic throttle control is currently limited by flap or slat
Maximum speeds, or by engine limits (N1 or EPR), or ty throttle
low limit protection.
To Mode Engaged
FLX to Mode Engaged
Climb Mode Engaged
Cruise Mode Engaged
Maximum Continuous Thrust Mode Engaged
GA Mode Engaged
Used with bit 16 to designate flap limit control currently in effect
N1/EPR Limit Failure/Warning
Used with bit 16 to designate slat limit.
The automatic throttles are engaged in the N1 basic mode and
control to a selected N1 limit defined by bits 17 thru 22. Also used
with bit 16.
Test
Spare
The automatic throttles are engaged in the EPR basic mode and
control to a selected N1 Limit defined by bits 17 and 22. Also used
with bit 16.
SSM
SSM
Parity
High
High
High
High
High
In Effect
Low
Low
Low
Low
Low
Not In Effect
Engaged
Engaged
Engaged
Engaged
Engaged
Engaged
In effect
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not In Effect
In Effect
Not In Effect
Test
Normal
Engaged
Not Engaged
ARINC SPECIFICATION 429 PART 2 - Page 134
DATA STANDARDS
Label 275 018 - TCAS Control Discrete (MODE S Address Part 1) – Transponder to TCAS - Bus 1 Word 5
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
Pad
Pad
Pad
Pad
Pad
Mode S Address (Part 1)
Bit A1 (MSB)
Bit A2
Bit A3
Bit A4
Bit A5
Bit A6
Bit A7
Bit A8
Bit A9
Bit A10
Bit A11
Bit A12
Bit A13
Bit A14
Bit A15
Bit A16 (LSB)
SSM
SSM
Parity (Odd)
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
Notes:
[1]
Sent by own TCAS in data word UF-16.
[2]
ARINC 429 data word fields for which there are corresponding RF fields are transmitted with the MSB first in
order to maintain consistency between RF and ARINC 429 data. Normal ARINC 429 protocol calls for the
transmission of the LSB of the field first.
ARINC SPECIFICATION 429 PART 2 - Page 135
DATA STANDARDS
Label 275 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
*
**
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
Pad
Pad
Pad
Lamp 1, 2 &/or 3 W/A
Failed
Other Channel’s Depower Discretes
Disagree
PB Sensor
Failed
P4.9 Sensor
Failed
P2 P(amb)** Sensor
Failed
PB Sensor Crosscheck*
Failed
P4.9 Sensor Crosscheck*
Failed
Serial Data Receiver
Failed
Serial Data Transmitter
Failed
Activity Monitor
Failed
Other Channel’s Depower Logic
Failed
Pressure Sensors Correlation
Disagree
PB Heater
Failed
Automatic Channel Transfer*
Failed
Pamb Sensor Drift*
Failed
Spare
SSM
SSM
Parity (Odd)
Primary channel only.
Primary channel uses P2: Secondary channel uses Pamb
X
X
X
X
X
OK
Agree
OK
OK
OK
OK
OK
OK
OK
OK
Ok OK
Agree
OK
OK
OK
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
ARINC SPECIFICATION 429 PART 2 - Page 136
DATA STANDARDS
Label 275 035 - Acknowledgement (ACK/NAK) Discrete – TCAS to Transponder - Bus 2 Word 3
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
Pad
ACK/NAK
SSM
SSM
Parity (Odd)
ACK
NAK
ARINC SPECIFICATION 429 PART 2 - Page 137
DATA STANDARDS
Label 275 03B
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
A/T Engage
A/T Alternate Rating I
A/T Alternate Rating II
A/T Alpha
A/T Flag Limit
A/T Retard
A/T Mach
A/T Speed
A/t EPR
A/T Throttle Hold
A/T Go Around
Engage
Engage
Engage
Engage
Engage
Engage
Engage
Engage
Engage
Engage
Engage
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Not Engaged
Invalid
Valid
Spare (All “0” States)
Word Validity
SSM
SSM
Parity (Odd)
ARINC SPECIFICATION 429 PART 2 - Page 138
DATA STANDARDS
Label 275 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
*
**
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
Pad
Pad
Pad
Lamp 1, 2, and/or 3 W/A
Failed
Other Channel’s Depower Discretes
Disagree
PB Sensor
Failed
P4.9 Sensor
Failed
P2 P(amb)** Sensor
Failed
PB Sensor Crosscheck*
Failed
P4.9 Sensor Crosscheck*
Failed
Serial Data Receiver
Failed
Serial Data Transmitter
Failed
Activity Monitor
Failed
Other Channel’s Depower Logic
Failed
Pressure Sensors Correlation
Disagree
PB Heater
Failed
Automatic Channel Transfer*
Failed
Pamb Sensor Drift*
Failed
Spare
SSM
SSM
Parity (Odd)
Primary channel only.
Primary channel uses P2: Secondary channel uses Pamb
X
X
X
X
X
OK
Agree
OK
OK
OK
OK
OK
OK
OK
OK
OK
Agree
OK
OK
OK
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
ARINC SPECIFICATION 429 PART 2 - Page 139
DATA STANDARDS
Label 275 05A - (A320) FQS - Left Wing
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
0.1 pf
1 pf
10 pf
100 pf
probe number (units)
probe number (units)
SSM
SSM
Parity (Odd)
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 - Page 140
DATA STANDARDS
Label 275 114 Miscellaneous Warnings
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
5
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
Wing Tanks Fuel Imbalance
Wing Tank Imbalance Latch
Left Wing Heavy
Right Wing Heavy
Wing Tanks Balanced
Wing Tank Overflow
Trim Tank Overflow
FCMC1 Failed
FCMC2 Failed
FCMC1 Class 2 Fault
FCMC2 Class 2 Fault
Jettison Fault
RCT Isolation Valve (Ca) Failed Open
RCT Isolation Fault
RCT Line Isolated
RCT Line Isolation Fault
RCT Fuel Unusable
RCT Empty
APU Line Fault
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
Imbalance
Latched
Heavy
Heavy
Balanced
Overflow
Overflow
Failed
Failed
Fault
Fault
Fault
Failed Open
Fault
Isolated
Fault
Unusable
Empty
Fault
Balanced
Not Latched
Not Heavy
Not Heavy
Not Balanced
Not Overflow
Not Overflow
OK
OK
No Fault
No Fault
No Fault
Not Failed
No Fault
Not Isolation
No Fault
Usable
Not Empty
No Fault
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be reserved for
Source/Destination Identification (SDI). For data Source identification the relevant equipment should encode its Aircraft
Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode its Aircraft
Installation number as follows:
Bit 10
0
1
[2]
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 - Page 141
DATA STANDARDS
Label 276 018 - TCAS Control Discrete (Mode S Address Part 2, Max A/S) transponder to TCAS - Bus 1 Word 6
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
st
Coding
Bit Status
Label 1 digit
2
Label 2nd digit
7
Label 3rd digit
6
1
X
Notes
0
X
Aural Advisory Cancel and Visual
Annunciator
R1 Echo
Pad
Pad
Mode S Address (Part 2)
Bit A17 (MSB)
Bit A18
Bit A19
Bit A20
Bit A21
Bit A22
Bit A23
Bit A24 (LSB)
Maximum Airspeed (MSB)
Maximum Airspeed
Maximum Airspeed
Maximum Airspeed (LSB)
Pad
Pad
Pad
Pad
Pad
SSM
SSM
Parity (Odd)
X
X
X
X
X
Cancel
X
Normal
1
RF MSG BIT
81
82
83
84
85
86
87
88
14
15
16
17
2
3
3
3
3
3
Notes:
[1]
See Attachment 12 of ARINC Characteristic 735 for logic encoding of the R1 field.
[2]
Sent by own transponder in DF-0, 16.
[3]
ARINC 429 data word fields for which there are corresponding RF fields are transmitted with the MSB first in
order to maintain consistency between RF and ARINC 429 data. Normal ARINC 429 protocol calls for the
transmission of the LSB of the field first.
ARINC SPECIFICATION 429 PART 2 - Page 142
DATA STANDARDS
Label 276 025 - Discrete Status 8 EFIS
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
6
1
X
Notes
0
X
X
X
X
X
X
X
SDI
SDI
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Pad
Pad
Pad
SSM
SSM
Parity (Odd)
X
X
X
ARINC SPECIFICATION 429 PART 2 - Page 143
DATA STANDARDS
Label 276 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
**
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
6
1
X
Notes
0
X
SDI
SDI
Pad
Pad
Pad
EEC Channel
EEC Unit
Resolver/LVDT Excitation
Spare
Spare
FCU Functions
HCC Functions
LCC Functions
2.5 Bleed Functions W/A
Spare
Spare
Spare
Spare
Spare
EEC Temperature Status
Overspeed Test**
SSM
SSM
Parity (Odd)
Second channel only
X
X
X
X
X
X
X
X
X
X
X
Failed
Failed
Failed
OK
OK
OK
X
X
Failed
Failed
Failed
Failed
OK
OK
OK
OK
X
X
X
X
X
High
Failed
OK
OK
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 - Page 144
DATA STANDARDS
Label 276 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
**
Coding
Bit Status
Function
st
Label 1 digit
2
Label 2nd digit
7
Label 3rd digit
6
1
X
Notes
0
X
SDI
SDI
Pad
Pad
Pad
EEC Channel
EEC Unit
Resolver/LVDT Excitation
Spare
Spare
FCU Functions
HCC Functions
LCC Functions
2.5 Bleed Functions W/A
Spare
Spare
Spare
Spare
Spare
EEC Temperature Status
Overspeed Test**
SSM
SSM
Parity (Odd)
Second channel only
X
X
X
X
X
X
X
X
X
X
X
Failed
Failed
Failed
OK
OK
OK
X
X
Failed
Failed
Failed
Failed
OK
OK
OK
OK
X
X
X
X
X
High
Failed
OK
OK
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 - Page 145
DATA STANDARDS
Label 276 114 Miscellaneous Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
2
Label 2nd digit
7
Label 3rd digit
6
1
X
Notes
0
X
X
X
X
X
X
SDI
SDI
FCMC In Control
Aircraft On Ground
Act1 Installed
Act2 Installed
RCT Installed
Fuel Quantity Display Units
Refuel Panel Ready For Flight
Transfer Control Valve Tank 2 Pushbutton
Transfer Control Valve Tank 3 Pushbutton
RCT Transfer Pump A (Front) Command
RCT Transfer Pump B(Rear) Command
APU Required
Jettison In Progress
Refuel Panel Door Open
Refuel In Progress
Refuel Fault
FDC 1 Fault
FDC 2 Fault
PAD
SSM
SSM
Parity (Set to Give Odd Parity)
1
1
FCMC 2
Ground
Installed
Installed
Installed
Pounds
Flight
Shut
Shut
On
On
Required
In Progress
Open
In Progress
Fault
Fault
Fault
FCMC 1
Flight
Absent
Absent
Absent
Kilograms
Not Flight
Open
Open
Off
Off
Not Required
Not In Progress
Not Open
Not In Progress
Not Fault
Not Fault
Not Fault
2
2
Depending upon its application group and resolution bits 9 and 10 of an ARINC 429 Data Word can be
reserved for Source/Destination Identification (SDI). For data Source identification the relevant equipment
should encode its Aircraft Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode
its Aircraft Installation number as follows:
Bit 10
0
1
[2]
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 - Page 146
DATA STANDARDS
Label 277 018 - Acknowledgement (ACK/NAK) Discrete – Transponder to TCAS - Bus 1 Word 7
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
st
Coding
Bit Status
Label 1 digit
2
Label 2nd digit
7
Label 3rd digit
7
1
X
Notes
0
X
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
Pad
ACK/NAK
SSM
SSM
Parity (Odd)
X
X
X
X
X
X
ACK
NAK
ARINC SPECIFICATION 429 PART 2 - Page 147
DATA STANDARDS
Label 277 114 Fuel Transfer and CG Status
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
[1]
Coding
Bit Status
Function
Label 1st digit
1
X
2
Notes
0
X
nd
Label 2 digit
7
Label 3rd digit
7
SDI
SDI
Act To Center Tank Normal
Act To Center Tank Abnormal
Act To Center Tank Manual
RCT To Center Tank Auto
RCT To Center Tank Abnormal
RCT To Center Tank Manual
Trim Tank Transfer Fault
Trim Tank Manual Transfer Fault
Trim Tank Feed Fault
Trim Tank Transferred
Effective Pitch Above Gravity Fwd Xfr Limit
Abnormal Man Forward Transfer
Aft Transfer Inoperative
24 Cg Target Shifted Forward
25 ZFW or ZFCG Disagree
Cg Regulation In Control
Airline Cg Target Delta
No ZFW/ZFCG Data
Crossfeed in Progress
SSM
SSM
Parity (Set to Give Odd Parity)
X
X
X
X
X
X
1
1
Normal
Abnormal
Manual
Auto
Abnormal
Manual
Fault
Fault
Fault
Transferred
Above
Abnormal
Inop
Forward
Disagree
On
Delta
Not Data
Crossfeed
Not Normal
Not Abnormal
Not Manual
Not Auto
Not Abnormal
Not Manual
Not Fault
Not Fault
Not Fault
Not Transferred
Below
Normal
Not Inop
Not Forward
Agree
Off
No Delta
OK
No Crossfeed
2
2
Depending upon its application group and resolution bits 9 & 10 of an ARINC 429 Data Word can be reserved for
Source/Destination Identification (SDI). For data Source identification the relevant equipment should encode its Aircraft
Installation number as follows:
Bit 10
0
1
Bit 9
1
0
Source
Transmission From Computer 1
Transmission From Computer 2
For data Destination (i.e maintenance data from the CMS) identification the relevant equipment should encode its Aircraft
Installation number as follows:
Bit 10
0
1
[2]
Bit 9
1
0
Destination
Transmission To Computer 1
Transmission To Computer 2
SSM
Bit 31
0
0
1
1
Bit 30
0
1
0
1
Designation
Normal Operation
NCD (Not Used)
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 - Page 148
DATA STANDARDS
Label 344 04D – Fuel Discretes
Signal*
One State
Function
Zero State
OCT Lab
SDI-Bits 9-10
Bit Loc
Low Fuel
Low
OK
344
00
14
Fuel Inbalance
Imbal
OK
344
00
15
* L = Left Main tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
ARINC SPECIFICATION 429 PART 2 - Page 149
DATA STANDARDS
Label 345 04D – Discretes Status 1 and 3
Function
Zero State
OCT Lab
Signal*
One State
R TANK SHRT/LNG
L TANK AIR/GRD #1
L TANK AIR/GRD #2
C TANK AIR/GRD #1
C TANK AIR/GRD #2
A TANK AIR/GRD #1
A TANK AIR/GRD #2
R TANK AIR/GRD #1
R TANK AIR/GRD #2
L TANK LB/KG
C TANK LB/KG
A TANK LB/KG
R TANK LB/KG
L TANK SHRT/LNG
SHORT
AIR
AIR
AIR
AIR
AIR
AIR
AIR
AIR
KG
KG
KG
KG
SHORT
LONG
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
GROUND
LB
LB
LB
LB
LONG
C TANK SHRT/LNG
SHORT
A TANK SHRT/LNG
SHORT
L = Left Main tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
SDI-Bits 9-10
Bit Loc
345
345
345
345
345
345
345
345
345
345
345
345
345
345
01
00
00
00
00
00
00
00
01
01
01
01
01
01
23
13
14
15
16
19
20
21
22
12
13
15
16
19
LONG
345
01
20
LONG
345
01
22
ARINC SPECIFICATION 429 PART 2 - Page 150
DATA STANDARDS
Label 350 018 Fault Summary Word
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
Label 2nd digit
5
1
X
X
X
Notes
0
X
X
Label 3rd digit
0
X
X
X
SDI
SDI
LRU Fault
Upper Antenna Fault
Lower Antenna Fault
Upper Receiver Fault
Lower Receiver Fault
Upper Transmitter Fault
Lower Transmitter Fault
Upper Squitter Fault
Lower Squitter Fault
Data Link A/B Inactive
Data Link C/D inactive
TCAS Bus Inactive/Failed
Control Source Select
Control Bus Inactive/Failed
Altitude Input A Inactive/Failed
Altitude Input B Inactive/Failed
Maintenance Bus Failure (227 Label)
Bite Test inhibit
Command Word Acknowledge
SSM
SSM
Parity
1
1
2
2
2
2
2
2
1=A
0=B
3
3
In the Air =1
4
4
Notes:
[1]
SDI Code
Bits
9
0
0
1
1
10
0
1
0
1
Meaning
Not Used
Side 1
Side 2
Side 3
[2]
Indicates Shop Relevant Fault Data, corresponding to the transceiver failure
[3]
Bit 25-26 only the bit matching the currently selected altitude source is valid. The other bit indicates either the status of
that altitude source the last time it was selected, or a zero, if that side was not selected during this power cycle.
[4]
Sign Status Matrix (SSM)
Bits
31
0
0
1
1
30
0
1
0
1
Meaning
Normal Operation
No Computed Data
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 - Page 151
DATA STANDARDS
Label 350 01A - EEC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
3
Label 2nd digit
5
1
X
X
X
Notes
0
X
X
Label 3rd digit
SDI
SDI
Pad
Pad
Pad
Pad
Connector J2
Connector J5
T2
EGT
TLA
RPX
A Chan SDD In
B Chan SDD In
Coil
Stg I Valve
P2 Leak
System Trim
TCA-A Valve
TCA-B Valve
Spare
SSM
SSM
Parity (Odd)
X
X
X
X
X
X
X
X
0
Not Inst.
Not Inst.
Probe Failed
Assy. Failed
Resol. Failed
Failed
Failed
Failed
Failed
Malfunction
Leak
Required
Malfunction
Malfunction
Inst.
Inst.
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
X
X
ARINC SPECIFICATION 429 PART 2 - Page 152
DATA STANDARDS
Label 350 027 - MLS Fault Summary
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
3
Label 2nd digit
5
1
X
X
X
Notes
0
X
X
Label 3rd digit
X
X
X
0
SDI
SDI
LRU Failure
#1 Antenna Failure
#2 Antenna Failure
#3 Antenna Failure
Source Selection
Input Data
CFDIU Input Bus
Battery Low Warning
Resv. MIL-STD-1553B Input Bus
Resv. DME Input Bus
Resv. DME Tuning Interface
Resv. Synchro Reference Invalid
Bite Test Inhibit
Command Word Acknowledge
SSM
SSM
Parity (Odd)
Note:
Transmission interval min. 50ms, max. 250ms.
Failure
Failure
Failure
Failure
Port A
Inactive
Inactive
Low
Inactive
Inactive
Failure
Failure
OK
OK
OK
OK
Port B
OK
OK
OK
OK
OK
OK
OK
Inhibit
ACK
Enable
NAK
ARINC SPECIFICATION 429 PART 2 - Page 153
DATA STANDARDS
Label 350 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
st
Label 1 digit
3
Label 2nd digit
5
1
X
X
X
Notes
0
X
X
Label 3rd digit
X
X
X
X
X
X
X
X
0
SDI
SDI
Pad
Pad
Pad
N1 Signal
N2 Signal
T2 Signal
T4.9 Signal
Tfuel Signal
Toil Signal
Wf Feedback Signal
SVA Feedback Signal
2.5 BLD Feedback Signal
HCC Feedback Signal
LCC Feedback Signal
Reverser Position Signal
AOX Feedback Signal
Reserved (Spare Feedback Signal)
Thrust Lever Position Signal
Spare
SSM
SSM
Parity (Odd)
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Failed
OK
X
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
ARINC SPECIFICATION 429 PART 2 - Page 154
DATA STANDARDS
Label 350 03D - Maintenance Data #1
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
3
Label 2nd digit
5
*
**
***
1
X
X
X
Notes
0
X
X
Label 3rd digit
0
X
X
X
SDI
SDI
Data
SSM
SSM
Parity (Odd)
Note [2]
Note [1]
Bits
10
0
0
1
1
Coding
Bit Status
Function
Data
9
0
1
0
1
Engine 4 (or All Call) (Not used on 757)
Engine 1 (or Engine 1 and 2)
Engine 2
Engine 3 (or Engine 3 and 4)
Bit
11
12
13
*14
**14
15
***15
16
***16
17
***17
*18
**18
*19
**19
*20
**20
21-27
28
29
B757 Pratt and Whitney and 737 CFM Only (Reserved)
B757 Rolls Royce Only
B757 Only
Data
Signal Conditioner Status
N1 Tachometer Signal Loss
N2 Tachometer Signal Loss
Pad
N3 Tachometer Signal Loss
Ch A Accelerometer High Noise
Pad
Ch B Accelerometer High Noise
Pad
Channel A <> Channel B
Pad
Pad
High B Broadband Levels
Pad
Ch A Accelerometer Low Signal
Pad
Ch B Accelerometer Low Signal
Pad
Unit Not Available
Command Word Acknowledge
ARINC SPECIFICATION 429 PART 2 - Page 155
DATA STANDARDS
Label 350 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
st
Label 1 digit
3
Label 2nd digit
5
1
X
X
X
Notes
0
X
X
Label 3rd digit
X
X
X
X
X
X
X
X
0
SDI
SDI
Pad
Pad
Pad
N1 Signal
N2 Signal
T2 Signal
T4.9 Signal
Tfuel Signal
Toil Signal
Wf Feedback Signal
SVA Feedback Signal
2.5 BLD Feedback Signal
HCC Feedback Signal
LCC Feedback Signal
Reverser Position Signal
AOX Feedback Signal
Reserved (Spare Feedback Signal)
Thrust Lever Position Signal
Spare
SSM
SSM
Parity (Odd)
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Failed
OK
X
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
ARINC SPECIFICATION 429 PART 2 - Page 156
DATA STANDARDS
Label 350 04D – Maintenance Data FQIS 1-3
Signal*
I/O Board Status
L-Air/Grd Disc
C-Air/Grd Disc
A-Air/Grd Disc
R-Air/Grd Disc
IOC Air/Grd I/P
IOC DIS Driver
LD SEL Cable Fail
Any Blanking Fail
Any FQIS Failure
Shrt/Lng Dis Jumper
L Tnk Shrt/Lng Dis
C Tnk Shrt/Lng Dis
A Tnk Shrt/Lng Dis
R Tnk Shrt/Lng Dis
Lbs/Kgs Dis Jumper
L-Lbs/Kgs Disc
C-Lbs/Kgs Disc
A-Lbs/Kgs Disc
R-Lbs/Kgs Disc
Bus To EICAS Fail
L = Left Main Tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
One State
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Blank
Failure
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Function
Zero State
OCT Lab
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
350
350
350
350
350
350
350
.350
350
350
350
350
350
350
350
350
350
350
350
350
350
SDI-Bits 9-10
Bit Loc
00
00
00
00
00
00
00
00
00
00
01
01
01
01
01
10
10
10
10
10
11
11
14
15
17
18
22
23
24
28
29
11
14
15
17
18
11
14
15
17
18
27
ARINC SPECIFICATION 429 PART 2 - Page 157
DATA STANDARDS
Label 350 114 - Fuel Unit Management System Discrete (A330/A340)
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Coding
Bit Status
Label 1st digit
3
Label 2nd digit
5
1
X
X
X
Notes
0
X
X
Label 3rd digit
SDI
SDI
Fuel Density (0.0001’s)
Fuel Density (0.001’s)
Fuel Density (0.01’s)
Fuel Density (0.1’s)
Tank Ident
SSM
SSM
Parity (Odd)
0
X
X
X
ARINC SPECIFICATION 429 PART 2 - Page 158
DATA STANDARDS
Label 350 - 115 - TACAN Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
Label 2nd digit
1
X
X
X
5
Notes
0
X
X
Label 3rd digit
X
X
X
0
LSB
AGC
(x 1/256 Full Scale)
MSB
CPU
RAM
ROM
2 Port RAM
2 Port DATA
NOVRAM
Synthesizer
Receiver
Power Supply
Xmit Power
Audio
Power Up
Suppression
D/A
TACAN Fail
Parity (Odd)
Note:
Bits 21 through 28 indicate self test status information.
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Present
Failed
Failed
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Not Present
OK
OK
ARINC SPECIFICATION 429 PART 2 - Page 159
DATA STANDARDS
Label 350 144 CDTI Display Unit
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
Label 2nd digit
5
1
X
X
X
X
X
Label 3rd digit
0
Reserved for SDI
Reserved for SDI
CDTI Failure
Traffic Data A Input Bus
Traffic Data B Input Bus
CDTI Control Panel Input
Weather Radar Input
Terrain Data (453) Input
Terrain Data (429) Input
FMC Input Bus (429)
Terrain Data (429) Input
TCAS TA/RA Input Bus
Range Comparison Error
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SSM
SSM
Parity
Inactive or Failure
Inactive or Failure
Inactive or Failure
Inactive or Failure
Inactive or Failure
Inactive or Failure
Inactive or Failure
Inactive or Failure
Inactive or Failure
Inactive or Failure
Inactive or Failure
Sign/Status Matrix (SSM):
Bits
31
0
0
1
1
30
0
1
0
1
X
X
X
X
X
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
1
1
Note:
[1]
Notes
0
Meaning
Normal Operation
No Computed Data
Functional Test
Failure Warning
ARINC SPECIFICATION 429 PART 2 - Page 160
DATA STANDARDS
Label 351 01A - EEC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
3
Label 2nd digit
Notes
0
X
5
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Pad
Pad
Pad
Pad
ARINC Transmitter
RPX Drift
RPX Test
TLA Correl Test
Resolver Test
Resolver Drift
Angle Range Check
Sine Range Check
Spare
LLDC Test #1
LLDC Drift #1
P2 Range Check (Boeing Only)
P2 Range Check
P7 Range Check
EPR Range Check
SSM
SSM
Parity (Odd)
X
X
X
X
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Good
Good
Good
Good
Good
Good
Good
Good
Fail
Fail
Fail
Fail
Fail
Fail
Good
Good
Good
Good
Good
Good
X
ARINC SPECIFICATION 429 PART 2 - Page 161
DATA STANDARDS
Label 351 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
*
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
Label 2nd digit
Notes
0
5
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Pad
Pad
Pad
Local ADC Inputs (Pri-Left, Sec-Right)
Crosstalk ADC Inputs*
Wf T/M W/A
SVA T/M W/A
2.5 BLD T/M W/A
HCC T/M W/A
LCC T/M W/A
AOX T/M W/A
Spare
Wf Track Check
SVA Track Check
2.5 BLD Track Check
HCC Track Check
LCC Track Check
AOX Track Check
Reserved (Spare Track Check)
SSM
SSM
Parity (Odd)
Primary channel only.
X
X
X
X
X
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
OK
OK
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
X
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
ARINC SPECIFICATION 429 PART 2 - Page 162
DATA STANDARDS
Label 351 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
*
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
Label 2nd digit
Notes
0
5
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Pad
Pad
Pad
Local ADC Inputs (Pri-Left, Sec-Right)
Crosstalk ADC Inputs*
Wf T/M W/A
SVA T/M W/A
2.5 BLD T/M W/A
HCC T/M W/A
LCC T/M W/A
AOX T/M W/A
Spare
Wf Track Check
SVA Track Check
2.5 BLD Track Check
HCC Track Check
LCC Track Check
AOX Track Check
Reserved (Spare Track Check)
SSM
SSM
Parity (Odd)
Primary channel only.
X
X
X
X
X
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
OK
OK
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
X
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the
specific application.
ARINC SPECIFICATION 429 PART 2 - Page 163
DATA STANDARDS
Label 351 04D - MAINTENANCE DATA FQIS 1&3
Signal*
L-Hi-Z-Shld Op/Prc
C-Hi-Z-Shld Op/Prc
A-Hi-Z-Shld Op/Prc
R-Hi-Z-Shld Op/Prc
L-Hi-Z-Shld Op/Spr
C-Hi-Z-Shld Op/Spr
A-Hi-Z-Shld Op/Spr
R-Hi-Z-Shld Op/Spr
L = Left Main Tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
One State
Open
Open
Open
Open
Open
Open
Open
Open
Function
Zero State
OCT Lab
OK
OK
OK
OK
OK
OK
OK
OK
351
351
351
351
351
351
351
351
SDI-Bits 9-10
Bit Loc
00
00
00
00
01
01
01
01
13
14
16
17
13
14
16
17
ARINC SPECIFICATION 429 PART 2 - Page 164
DATA STANDARDS
Label 351 114 - Fuel Unit Management System Discrete (A330/A340)
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
Label 2nd digit
1
X
X
X
5
Notes
0
X
X
Label 3rd digit
X
X
1
X
SDI
SDI
Probe Capacitance (0.1’s)
Probe Capacitance (1’s)
Probe Capacitance (10’s)
Probe Capacitance (100’s)
Probe Number (1’s)
Probe Number (10’s)
SSM
SSM
Parity (Odd)
ARINC SPECIFICATION 429 PART 2 - Page 165
DATA STANDARDS
Label 352 01A - EEC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
nd
Label 2 digit
Notes
0
5
X
X
Label 3rd digit
X
2
X
X
SDI
SDI
Pad
Pad
Pad
Pad
EGT Loop Sel/Fail
N2
P7 Test
N2/P2 Test
T/M, D/A or Driver
T/M “Undetermined”
Pres Temp Inputs
Latch Solenoid W/A
Health Indicator W/A
ROM Sum Test
RAM Test
Watchdog Timer
Instruction Test
Watchdog Resets
Converter Reset
SSM
SSM
Parity (Odd)
X
X
X
X
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Fail
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
Good
ARINC SPECIFICATION 429 PART 2 - Page 166
DATA STANDARDS
Label 352 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
*
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
nd
Label 2 digit
Notes
0
5
X
X
Label 3rd digit
X
2
X
X
SDI
SDI
Pad
Pad
Pad
DC Power Group 1
DC Power Group 2
Spare
EEC to PDIU SDD
PDIU Self Test
HCC T/M W/A
Local TCA Valve (Pri-Left, Sec-Right)
Crosstalk TCA Valve Check*
Spare
SDD Input from PDIU
N1 Sensor (Pri and Sec)*
PB Pneumatic Line*
P4.9 Pneumatic Line*
P2 Probe/Line*
Fire Warn. Discrete Disagreement*
Data Entry Plug
SSM
SSM
Parity (Odd)
Primary channel only.
X
X
X
Failed
Failed
OK
OK
Failed
Failed
Failed
OK
OK
OK
Failed
OK
Failed
Failed
Failed
Failed
Failed
Disagree
Failed
OK
OK
OK
OK
OK
OK
OK
X
X
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 - Page 167
DATA STANDARDS
Label 352 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
*
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
nd
Label 2 digit
Notes
0
5
X
X
Label 3rd digit
X
2
X
X
SDI
SDI
Pad
Pad
Pad
DC Power Group 1
DC Power Group 2
Spare
EEC to PDIU SDD
PDIU Self Test
HCC T/M W/A
Local TCA Valve (Pri-Left, Sec-Right)
Crosstalk TCA Valve Check*
Spare
SDD Input from PDIU
N1 Sensor (Pri and Sec)*
PB Pneumatic Line*
P4.9 Pneumatic Line*
P2 Probe/Line*
Fire Warn. Discrete Disagreement*
Data Entry Plug
SSM
SSM
Parity (Odd)
Primary channel only.
X
X
X
Failed
Failed
OK
OK
Failed
Failed
Failed
OK
OK
OK
Failed
OK
Failed
Failed
Failed
Failed
Failed
Disagree
Failed
OK
OK
OK
OK
OK
OK
OK
X
X
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 - Page 168
DATA STANDARDS
Label 352 04D – Maintenance Data FQIS 1-4
Signal*
IFQC - L TANK
IFQC - C TANK
IFQC - A TANK
IFQC - R TANK
L-DENS SENSOR FAIL
C-DENS SENSOR FAIL
A-DENS SENSOR FAIL
R-DENS SENSOR FAIL
L-DENS RES CONTAM
C-DENS RES CONTAM
A-DENS RES CONTAM
R-DENS RES CONTAM
L-DENS CBL SNS/SHD
C-DENS CBL SNS/SHD
A-DENS CBL SNS/SHD
R-DENS CBL SNS/SHD
L-DENS CBL OPN/SPR
C-DENS CBL OPN/SPR
A-DENS CBL OPN/SPR
R-DENS CBL OPN/SPR
L-DENS RES UNREAD
C-DENS RES UNREAD
A-DENS RES UNREAD
R-DENS RES UNREAD
L-DENS CBL EXC/GND
C-DENS CBL EXC/GND
A-DENS CBL EXC/GND
R-DENS CBL EXC/GND
L-DENS CBL OPN/PRC
C-DENS CBL OPN/PRC
A-DENS CBL OPN/PRC
R-DENS CBL OPN/PRC
L-HI-Z WIRE OP/PRC
C-HI-Z WIRE OP/PRC
A-HI-Z WIRE OP/PRC
R-HI-Z WIRE OP/PRC
L-HI-Z WIRE OP/SPR
C-HI-Z WIRE OP/SPR
A-HI-Z WIRE OP/SPR
R-HI-Z WIRE OP/SPR
L = Left Main Tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
One State
FAILED
FAILED
FAILED
FAILED
FAILED
FAILED
FAILED
FAILED
FAILED
CONTAM.
CONTAM.
CONTAM.
SHORTED
SHORTED
SHORTED
SHORTED
OPEN
OPEN
OPEN
OPEN
UNREAD
UNREAD
UNREAD
UNREAD
SHORTED
SHORTED
SHORTED
SHORTED
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
Function
Zero State
OCT Lab
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
352
SDI-Bits 9-10
Bit Loc
00
00
00
00
00
00
00
00
01
01
01
01
01
01
01
01
01
01
01
01
10
10
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
13
14
16
17
23
24
26
27
11
12
14
15
17
18
20
21
23
24
26
27
11
12
14
15
17
18
20
21
23
24
26
27
13
14
16
17
23
24
26
27
ARINC SPECIFICATION 429 PART 2 - Page 169
DATA STANDARDS
Label 352 114 - Fuel Unit Management System Discrete (A330/A340)
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
nd
Label 2 digit
1
X
X
X
5
Notes
0
X
X
Label 3rd digit
X
2
X
X
SDI
SDI
Probe Capacitance (0.1’s)
Probe Capacitance (1’s)
Probe Capacitance (10’s)
Probe Capacitance (100’s)
Probe Number (1’s)
Probe Number (10’s)
SSM
SSM
Parity (Odd)
ARINC SPECIFICATION 429 PART 2 - Page 170
DATA STANDARDS
Label 353 01A - EEC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
nd
Label 2 digit
Notes
0
5
X
X
Label 3rd digit
X
3
SDI
SDI
Pad
Pad
Pad
Pad
Spare
EGT Loop Disabled
Synth Altitude
Synth Mach Number
SDD ‘A’ W/A
ADD ‘B’ W/A
Probe Heat (Boeing 767 Only)
Pressure Accuracy
T/M Coil
TCC Schedule
(Airbus
Acft Pt Used
310,000
P2 Range Check
Only)
TCA System
TCC System
System Trim
SSM
SSM
Parity (Odd)
X
X
X
X
X
X
X
Yes
Yes
Yes
Failure
Failure
Disagreement
Degraded
Yes
Default
Yes
Failed
Failed
Failed
Required
No
No
No
Good
Good
Normal
Normal
No
Normal
No
Good
Good
Good
OKay
ARINC SPECIFICATION 429 PART 2 - Page 171
DATA STANDARDS
Label 353 02F
Bit
Coding
Bit Status
Function
Label 1st digit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
X
X
X
3
nd
Label 2 digit
Notes
0
5
X
X
Label 3rd digit
X
3
SDI
SDI
Pad
Pad
Pad
N1 Crosscheck*
N2 Crosscheck*
Spare
Spare
T2 Crosscheck*
T2 Probe/ADC T2 Disagreement
Tfuel Crosscheck*
Toil Crosscheck*
Wf Feedback Crosscheck*
SVA Feedback Crosscheck*
2.5 BLD Feedback Crosscheck*
HCC Feedback Crosscheck*
LCC Feedback Crosscheck*
Reverser Position Crosscheck*
AOX Feedback Crosscheck*
Thrust Lever Position Crosscheck*
SSM
SSM
Parity (Odd)
X
X
X
X
X
X
X
Failed
Failed
OK
OK
X
X
Failed
Disagree
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
*
Primary channel only
ARINC SPECIFICATION 429 PART 2 - Page 172
DATA STANDARDS
Label 353 03D - Maintenance Data #4 Highest Vibration
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
nd
Label 2 digit
1
X
X
X
5
Notes
0
X
X
Label 3rd digit
X
3
X
X
SDI
SDI
Accelerometer Source
X
X
X
X
X
PADS
3, 4, 5
3, 4, 5
6
6
6
6
6
6
6
6
6
7
7
7
Data ID
Data
SSM
SSM
SSM
Parity (Odd)
Note [1] SDI
Bits
10
9
0
0
0
1
1
0
1
1
1
1
2
2
Data
Engine 4
Engine 1
Engine 2
Engine 3
Note [3] *Data ID
Bits
Data
19 18
0
0 N1 Vibration (Label 354)
0
1 N2 Vibration (Label 355)
1
0 N3 Vibration (Label 356)
1
1 BB Vibration (Label 357)
Note [2] Accelerometer Source
Bits
Data
12 11
0
0 No Channel in command
0
1 Channel A
1
0 Channel B
Note [4] *B737 Data ID
Bits
Data
19 18
0
0 CN1 Vibration (Label 354)
0
1 CN2 Vibration (Label 355)
1
0 TN1 Vibration (Label 356)
1
1 TN2 Vibration (Label 357)
ARINC SPECIFICATION 429 PART 2 - Page 173
DATA STANDARDS
Label 353 03D - Maintenance Data #4 Highest Vibration (cont’d)
Note [5] *B757 Data ID
Bits
Data
19 18
0
0 BB Vibration (Label 357)
0
1 N1 Vibration (Label 354)
1
0 N1 Vibration (Label 355)
1
1 N3 Vibration (Label 356)**
** Used on B757 Rolls Royce Engines only
Note [6] Data
Bit 28 27 26 25 24 23 22 21 20
MSB<
>LSB
Bit Encoding for Vibration Labels:
Bits = 9
Resolution = 0.01
Range = 0 to 5.12
Units = Scalar Units
Note [7] SSM
Bits
Data
31 30 29
1
0
0 Self Test
1
1
0 Normal Operation
ARINC SPECIFICATION 429 PART 2 - Page 174
DATA STANDARDS
Label 353 03F
Bit
Coding
Bit Status
Function
Label 1st digit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
X
X
X
3
nd
Label 2 digit
Notes
0
5
X
X
Label 3rd digit
X
3
SDI
SDI
Pad
Pad
Pad
N1 Crosscheck*
N2 Crosscheck*
Spare
Spare
T2 Crosscheck*
T2 Probe/ADC T2 Disagreement
Tfuel Crosscheck*
Toil Crosscheck*
Wf Feedback Crosscheck*
SVA Feedback Crosscheck*
2.5 BLD Feedback Crosscheck*
HCC Feedback Crosscheck*
LCC Feedback Crosscheck*
Reverser Position Crosscheck*
AOX Feedback Crosscheck*
Thrust Lever Position Crosscheck*
SSM
SSM
Parity (Odd)
X
X
X
X
X
X
X
Failed
Failed
OK
OK
X
X
Failed
Disagree
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
Failed
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
*
Primary channel only
ARINC SPECIFICATION 429 PART 2 - Page 175
DATA STANDARDS
Label 353 04D – Maintenance Data FQIS 1-4
Signal*
One State
L-HI-Z LOW RES
C-HI-Z LOW RES
A-HI-Z LOW RES
R-HI-Z LOW RES
L-HI-Z-SHT CON/SHL
C-HI-Z-SHT CON/SHL
A-HI-Z SHT CON/SHD
R-HI-Z SHT CON/SHL
L-COMP LO-Z OPEN
C-COMP LO-Z OPEN
A-COMP LO-Z OPEN
R-COMP LO-Z OPEN
L-COMP SHORTED
C-COMP SHORTED
A-COMP SHORTED
R-COMP SHORTED
L-HI-Z SHRT SHLD/GND
C-HI-Z SHRT SHLD/GND
A-HI-Z SHRT SHLD/GND
R-HI-Z SHRT SHLD/GND
L-COMP CONTAM
C-COMP CONTAM
A-COMP CONTAM
R-COMP CONTAM
L-COMP LO-Z SHORT
C-COMP LO-Z SHORT
A-COMP LO-Z SHORT
R-COMP LO-Z SHORT
LOW RES
LOW RES
LOW RES
LOW RES
SHORTED
SHORTED
SHORTED
SHORTED
OPEN
OPEN
OPEN
OPEN
SHORTED
SHORTED
SHORTED
SHORTED
SHORTED
SHORTED
SHORTED
SHORTED
CONTAM.
CONTAM.
CONTAM.
CONTAM.
SHORT TO GND
SHORT TO GND
SHORT TO GND
SHORT TO GND
L = Left Main Tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
Function
Zero State
OCT Lab
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
353
SDI-Bits 9-10
Bit Loc
00
00
00
00
00
00
00
00
01
01
01
01
01
01
01
01
10
10
10
10
11
11
11
11
11
11
11
11
13
14
16
17
23
24
26
27
13
14
16
17
23
24
26
27
13
14
16
17
13
14
16
17
23
24
26
27
ARINC SPECIFICATION 429 PART 2 - Page 176
DATA STANDARDS
Label 353 114 - Fuel Unit Management System Discrete (A330/A340)
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
nd
Label 2 digit
1
X
X
X
5
Notes
0
X
X
Label 3rd digit
X
3
SDI
SDI
Probe Capacitance (0.1’s)
Probe Capacitance (1’s)
Probe Capacitance (10’s)
Probe Capacitance (100’s)
Probe Number (1’s)
Probe Number (10’s)
SSM
SSM
Parity (Odd)
X
X
ARINC SPECIFICATION 429 PART 2 - Page 177
DATA STANDARDS
Label 354 01A - EEC Discrete
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
nd
Label 2 digit
5
X
X
X
Label 3rd digit
4
SDI
SDI
Pad
Pad
Pad
Pad
TPT2 Temp Diode
TPT7 Temp Diode
T/M W/A’A Range Check
T/M W/A’B Range Check
Spare
Spare
LLDC Test #2
LLDC Drift #2
TCC Stage I W/A
TCC Stage II W/A
TCC Stage III W/A
Spare
Spare
Spare
SSM
SSM
Parity (Odd)
Notes
0
X
X
X
X
X
X
Fail
Fail
Fail
Fail
Fail
Good
Good
Good
Good
Good
X
X
Fail
Fail
Fail
Fail
Fail
Good
Good
Good
Good
Good
X
X
X
ARINC SPECIFICATION 429 PART 2 - Page 178
DATA STANDARDS
Label 354 02F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
nd
Label 2 digit
Notes
0
5
X
X
X
Label 3rd digit
4
SDI
SDI
Pad
Pad
Pad
REV Command Solenoid W/A
TCA Solenoid W/A
Reserved (Spare Solenoid W/A)
Reserved (Spare Solenoid W/A)
Reserved (Spare Relay W/A)
14th Stage Bleed T/M W/A
Spare
Reserved (Spare Solenoid W/A)
Oil Bypass Solenoid W/A
Reserved (Spare Relay W/A)
T/L Interlock Relay W/A
Reserved (Spare Relay W/A)
Spare
Group 1 Overcurrent Sense
Group 2 Overcurrent Sense
Spare
SSM
SSM
Parity (Odd)
X
X
X
X
X
X
X
Failed
Failed
OK
OK
X
X
X
Failed
OK
X
X
Failed
OK
Failed
OK
X
X
X
Tripped
Tripped
OK
OK
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 - Page 179
DATA STANDARDS
Label 354 03F
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
1
X
X
X
3
nd
Label 2 digit
Notes
0
5
X
X
X
Label 3rd digit
4
SDI
SDI
Pad
Pad
Pad
REV Command Solenoid W/A
TCA Solenoid W/A
Reserved (Spare Solenoid W/A)
Reserved (Spare Solenoid W/A)
Reserved (Spare Relay W/A)
14th Stage Bleed T/M W/A
Spare
Reserved (Spare Solenoid W/A)
Oil Bypass Solenoid W/A
Reserved (Spare Relay W/A)
T/L Interlock Relay W/A
Reserved (Spare Relay W/A)
Spare
Group 1 Overcurrent Sense
Group 2 Overcurrent Sense
Spare
SSM
SSM
Parity (Odd)
X
X
X
X
X
X
X
Failed
Failed
OK
OK
X
X
X
Failed
OK
X
X
Failed
OK
Failed
OK
X
X
X
Tripped
Tripped
OK
OK
X
X
X
Note:
Typical discrete functions are shown in the above table. Slight variations of bit usage may arise according to the specific
application.
ARINC SPECIFICATION 429 PART 2 - Page 180
DATA STANDARDS
Label 354 04D - FQIS Tank ID
Signal*
A TANK PROG PIN 01
A TANK PROG PIN 02
A TANK PROG PIN 03
A TANK PROG PIN 04
A TANK PROG PIN 05
R TANK PROG PIN 01
R TANK PROG PIN 02
R TANK PROG PIN 03
R TANK PROG PIN 04
R TANK PROG PIN 05
L TANK PROG PIN 01
L TANK PROG PIN 02
L TANK PROG PIN 03
L TANK PROG PIN 04
L TANK PROG PIN 05
C TANK PROG PIN 01
C TANK PROG PIN 02
C TANK PROG PIN 03
C TANK PROG PIN 04
C TANK PROG PIN 05
L = Left Main Tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
One State
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
Function
Zero State
OCT Lab
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
CLEAR
354
354
354
354
354
354
354
354
354
354
354
354
354
354
354
354
354
354
354
354
SDI-Bits 9-10
Bit Loc
00
00
00
00
00
01
01
01
01
01
10
10
10
10
10
11
11
11
11
11
11
12
13
14
15
11
12
13
14
15
11
12
13
14
15
11
12
13
14
15
ARINC SPECIFICATION 429 PART 2 - Page 181
DATA STANDARDS
Label 355 027 - Fault Supplement Word for MLS
Bit
Coding
Bit Status
Function
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Label 1st digit
3
nd
Label 2 digit
5
Label 3rd digit
5
SDI
SDI
BITS 11 thru 29
Reserved for Company
Private use
SSM
SSM
Parity (Odd)
Note:
Transmission interval min. 50 ms, max. 250 ms.
Notes
0
ARINC SPECIFICATION 429 PART 2 - Page 182
DATA STANDARDS
Label 355 04D – Maintenance Data FQIS 2-4
Signal*
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
ARINC TEST WORD
IOC STATUS
L TNK SELF TST CMD
C TNK SELF TST CMD
A TNK SELF TST CMD
R TNK SELF TST CMD
L FUEL PANEL DR
C FUEL PANEL DR
A FUEL PANEL DR
R FUEL PANEL DR
OVRD PUMPS C-TANK
FLT DCK TEST SW
LD SEL IND TST SW
FUL PNL SYS TST SW
IOC A FUEL PNL DR
IOC A AIR/GND
IOC A AIR/GND #1
IOC A AIR/GND #2
IOC A LBS/KGS
IOC A TNK INSTL
L LOAD SELECT SW
C LOAD SELECT SW
A LOAD SELECT SW
L = Left Main Tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
One State
Function
Zero State
OCT Lab
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
SET
FAILED
SELF TEST
SELF TEST
SELF TEST
SELF TEST
OPEN
OPEN
OPEN
OPEN
ON
IN TEST
IN TEST
IN TEST
OPEN
AIR
AIR
AIR
KGS
YES
SET
SET
SET
SET
SET
SET
SET
SET
SET
OK
NORMAL
NORMAL
NORMAL
NORMAL
CLOSED
CLOSED
CLOSED
CLOSED
OFF
NO TEST
NO TEST
NO TEST
CLOSED
GND
GND
GND
LBS
NO
NOT SET
NOT SET
NOT SET
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
355
SDI-Bits 9-10
Bit Loc
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
01
01
01
01
10
10
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
14
16
20
22
12
13
15
16
18
11
13
14
15
16
17
18
19
21
26
27
28
ARINC SPECIFICATION 429 PART 2 - Page 183
DATA STANDARDS
Label 357 04D – Maintenance Data FQIS 2-3
Signal*
R LOAD SELECT SW
L T/U UNKN SHORT
C T/U UNKN SHORT
A T/U UNKN SHORT
R T/U UNKN SHORT
L-VTO 87%
C-VTO 87%
A-VTO 87%
R-VTO 87%
L-VTO 95%
C-VTO 95%
A-VTO 95%
R-VTO 95%
L = Left Main Tank
R = Right Main Tank
C = Center Tank
A = Auxiliary Tank
One State
Function
Zero State
OCT Lab
SET
SHORTED
SHORT
SHORT
SHORT
YES
YES
YES
YES
YES
YES
YES
YES
NOT SET
OK
OK
OK
OK
NO
NO
NO
NO
NO
NO
NO
NO
355
357
357
357
357
357
357
357
357
357
357
357
357
SDI-Bits 9-10
Bit Loc
11
01
01
01
01
10
10
10
10
10
10
10
10
29
11
12
14
15
12
13
15
16
19
20
22
23
ARINC SPECIFICATION 429 PART 2 - Page 184
DATA STANDARDS
Label 360 03D - N1 Rotor Imbalance Angle
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
nd
Label 2 digit
6
1
X
X
X
X
Notes
0
X
X
X
X
Label 3rd digit
0
SDI
SDI
1
1
2
2
Accelerometer Source
X
X
X
X
X
X
Pads
Data
X
SSM (Normal Operation)
X
X
Parity (Odd)
Note [1] SDI
Bits
Data
10
9
0
0 Engine 4
0
1 Engine 1
1
0 Engine 2
1
1 Engine 3
Note [3] Data
Bit 28 27 26 25 24 23 22 21 20
MSB<
>LSB
Bit Encoding for Vibration Labels
Bits = 9
Resolution = 1.0
Range = 0 to 360
Units = Degrees
Note [2] Accelerometer Source
Bits
Data
12 11
0
0 No Channel in command
0
1 Channel A
1
0 Channel B
Note [4] SSM
Bits
31 30 29
1
0
0
0
1
0
1
1
0
0
0
0
Data
Functional Test
No Computed Data
Normal Operation
Failure Warning
3
3
3
3
3
3
3
3
3
4
4
4
ARINC SPECIFICATION 429 PART 2 - Page 185
DATA STANDARDS
Label 361 03D* - LPT Rotor Imbalance Angle
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
nd
Label 2 digit
6
1
X
X
X
X
Notes
0
X
X
X
Label 3rd digit
1
X
SDI
SDI
1
1
2
2
Accelerometer Source
X
X
X
X
X
X
Pads
Data
X
SSM (Normal Operation)
X
X
Parity (Odd)
Note [1] SDI
Data
Bits
10
9
0
0 Engine 4
0
1 Engine 1
1
0 Engine 2
1
1 Engine 3
Note [3] Data
Bit 28 27 26 25 24 23 22 21 20
MSB<
>LSB
Bit Encoding for Vibration Labels:
Bits = 9
Resolution = 1.0
Range = 0 to 360
Units = Degrees
* B737 only
Note [2] Accelerometer Source
Bits
Data
12 11
0
0 No Channel in command
0
1 Channel A
1
0 Channel B
Note [4] SSM
Bits
31 30 29
1
0
0
0
1
0
1
1
0
0
0
0
Data
Functional Test
No Computed Data
Normal Operation
Failure Warning
3
3
3
3
3
3
3
3
3
4
4
4
ARINC SPECIFICATION 429 PART 2 - Page 186
DATA STANDARDS
Label 377 XXX Equipment Identifier
The example below is shown for 024
Bit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Coding
Bit Status
Function
Label 1st digit
3
Label 2nd digit
7
Label 3rd digit
7
SDI
SDI
Equipment ID (LSD) (LSB)
Equipment ID (LSD)
Equipment ID (LSD)
Equipment ID (LSD) (MSB)
Equipment ID
(LSB)
Equipment ID
Equipment ID
Equipment ID
(MSB)
Equipment ID (MSD) (LSB)
Equipment ID (MSD)
Equipment ID (MSD)
Equipment ID (MSD) (MSB)
Pad
Pad
Pad
Pad
Pad
Pad
Pad
SSM
SSM
Parity
Note:
[1] The SSM per ARINC Specification 429 Part 1
1
X
X
X
X
X
X
X
X
Notes
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1
1
AERONAUTICAL RADIO, INC.
2551 Riva Road
Annapolis, Maryland 21401-7465
SUPPLEMENT 16
TO
ARINC SPECIFICATION 429
MARK 33 DIGITAL INFORMATION TRANSFER SYSTEM (DITS)
PART 2
DISCRETE WORD DATA STANDARDS
Published: December 17, 2004
Prepared by the Airlines Electronic Engineering Committee
Adopted by the Airlines Electronic Engineering Committee:
October 27, 2004
SUPPLEMENT 16 TO ARINC SPECIFICATION 429 PART 2 – Page a
A. PURPOSE OF THIS DOCUMENT
This supplement introduces new discrete label assignments.
B. ORGANIZATION OF THIS SUPPLEMENT
The revision material introduced by this supplement, described in Part C, was integrated into the body of this
specification to form an updated version of the standard.
C. CHANGES TO ARINC SPECIFICATION 429 PART 2 INTRODUCED BY THIS SUPPLEMENT
This section presents a complete tabulation of the changes, additions, and deletions to this ARINC Specification
introduced by Supplement 16. Each change is identified by at least two elements:
•
•
the section number and title currently employed in specification prior to the incorporation of the change
a brief description of the change.
1.1.1 Relationship to Other Documents
New section added.
Data Standards
The following discrete labels were added by Supplement 16:
Octal
140
141
142
143
144
145
146
147
150
151
152
153
154
155
160
161
162
163
164
EQ ID
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
114
Octal
214
216
270
270
270
271
271
271
272
272
273
274
275
276
277
350
350
377
EQ ID
xxx
xxx
114
142
144
114
142
144
114
144
114
114
114
114
114
018
144
xxx
ARINC Project Initiation/Modification
12/22/04
ARINC IA Project Initiation/Modification (APIM)
Guidelines for Submittal
1.
ARINC Industry Activities Projects and Work Program
A project is established in order to accomplish a technical task approved by one or
more of the committees (AEEC, AMC, FSEMC) Projects generally but not
exclusively result in a new ARINC standard or modify an existing ARINC
standard. All projects are typically approved on a calendar year basis. Any
project extending beyond a single year will be reviewed annually before being reauthorized. The work program of Industry Activities (IA) consists of all projects
authorized by AEEC, AMC, or FSEMC (The Committees) for the current
calendar year.
The Committees establish a project after consideration of an ARINC Project
Initiation/Modification (APIM) request. This document includes a template which
has provisions for all of the information required by The Committees to determine
the relative priority of the project in relation to the entire work program.
All recommendations to the committees to establish or reauthorize a project,
whether originated by an airline or from the industry, should be prepared using
the APIM template. Any field that cannot be filled in by the originator may be
left blank for subsequent action.
2.
Normal APIM Evaluation Process
Initiation of an APIM
All proposed projects must be formally initiated by filling in the APIM template.
An APIM may be initiated by anyone in the airline community, e.g., airline,
vendor, committee staff.
Staff Support
All proposed APIMs will be processed by committee staff. Each proposal will be
numbered, logged, and evaluated for completeness. Proposals may be edited to
present a style consistent with the committee evaluation process. For example,
narrative sentences may be changed to bullet items, etc. When an APIM is
complete, it will be forwarded to the appropriate Committee for evaluation.
The committee staff will track all ongoing projects and prepare annual reports on
progress.
Committee Evaluation and Acceptance or Rejection
The annual work program for each Committee is normally established at its
annual meeting. Additional work tasks may be evaluated at other meetings held
during the year. Each committee (i.e., AMC, AEEC, FSEMC) has its own
schedule of annual and interim meetings.
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The committee staff will endeavor to process APIMs and present them to the
appropriate Committee at its next available meeting. The Committee will then
evaluate the proposal. Evaluation criteria will include:
• Airline support – number and strength of airline support for the project,
including whether or not an airline chairman has been identified
• Issues – what technical, programmatic, or competitive issues are
addressed by the project, what problem will be solved
• Schedule – what regulatory, aircraft development or modification,
airline equipment upgrade, or other projected events drive the urgency
for this project
Accepted proposals will be assigned to a subcommittee for action with one of two
priorities:
• High Priority – technical solution needed as rapidly as possible
• Routine Priority – technical solution to proceed at a normal pace
Proposals may have designated coordination with other groups. This means that
the final work must be coordinated with the designated group(s) prior to submittal
for adoption consideration.
Proposals that are not accepted may be classified as follows:
• Deferred for later consideration - the project is not deemed of sufficient
urgency to be placed on the current calendar of activities but will be
reconsidered at a later date
• Deferred to a subcommittee for refinement – the subcommittee will be
requested to, for example, gain stronger airline support or resolve
architectural issues
• Rejected – the proposal is not seen as being appropriate, e.g., out of
scope of the committee
3.
APIM Template
The following is an annotated outline for the APIM. Proposal initiators are
requested to fill in all fields as completely as possible, replacing the italicized
explanations in each section with information as available. Fields that cannot be
completed may be left blank. When using the Word file version of the following
template, update the header and footer to identify the project.
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ARINC IA Project Initiation/Modification (APIM)
Name of proposed project APIM #: _____
Name for proposed project.
Suggested Subcommittee assignment
Identify an existing group that has the expertise to successfully complete the
project. If no such group is known to exist, a recommendation to form a new
group may be made.
Project Scope
Describe the scope of the project clearly and concisely. The scope should
describe “what” will be done, i.e., the technical boundaries of the project.
Example: “This project will standardize a protocol for the control of printers.
The protocol will be independent of the underlying data stream or page
description language but will be usable by all classes of printers.”
Project Benefit
Describe the purpose and benefit of the project. This section should describe
“why” the project should be done. Describe how the new standard will improve
competition among vendors, giving airlines freedom of choice. This section
provides justification for the allocation of both IA and airline resources.
Example: “Currently each class of printers implements its own proprietary
protocol for the transfer of a print job. In order to provide access to the cockpit
printer from several different avionics sources, a single protocol is needed. The
protocol will permit automatic determination of printer type and configuration to
provide for growth and product differentiation.”
Airlines supporting effort
Name, airline, and contact information for proposed chairman, lead airline, list
of airlines expressing interest in working on the project (supporting airlines), and
list of airlines expressing interest but unable to support (sponsoring airlines). It
is important for airline support to be gained prior to submittal. Other
organizations, such as airframe manufacturers, avionics vendors, etc. supporting
the effort should also be listed.
Issues to be worked
Describe the major issues to be addressed by the proposed ARINC standard.
Recommended Coordination with other groups
Draft documents may have impact on the work of groups other than the
originating group. The APIM writer or, subsequently, The Committee may
identify other groups which must be given the opportunity to review and comment
upon mature draft documents.
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Projects/programs supported by work
If the timetable for this work is driven by a new airplane type, major avionics
overhaul, regulatory mandate, etc., that information should be placed in this
section. This information is a key factor in assessing the priority of this proposed
task against all other tasks competing for subcommittee meeting time and other
resources.
Timetable for projects/programs
Identify when the new ARINC standard is needed (month/year).
Documents to be produced and date of expected result
The name and number (if already assigned) of the proposed ARINC standard to
be either newly produced or modified.
Comments
Anything else deemed useful to the committees for prioritization of this work.
Meetings
The following table identifies the number of meetings and proposed meeting days
needed to produce the documents described above.
Activity
Mtgs
Mtg-Days
# of mtgs
# of mtg days
Document a
# of mtgs
# of mtg days
Document b
For IA staff use
Date Received___________ IA staff assigned: __________________________________
Potential impact: ____
(A. Safety
B. Regulatory
C. New aircraft/system
D. Other)
Forward to committee(s) (AEEC, AMC, FSEMC): _________ Date Forward:___________
Committee resolution: ____
(0. Withdrawn 1. Authorized 2. Deferred 3. More detail needed 4. Rejected)
Assigned Priority: ____ Date of Resolution:___________________
A. – High (execute first)
B. – Normal (may be deferred for A.)
Assigned to SC/WG ________________________________________
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ARINC Standard – Errata Report
1. Document Title
ARINC Specification 429P2-16: Mark 33 Digital Information Transfer System (DITS), Part 2 –
Discrete Word Data Standards, Published: November 8, 2004
2. Reference
Page Number:
Section Number:
Date of Submission:
3. Error
(Reproduce the material in error, as it appears in the standard.)
4. Recommended Correction
(Reproduce the correction as it would appear in the corrected version of the material.)
5. Reason for Correction
(State why the correction is necessary.)
6. Submitter (Optional)
(Name, organization, contact information, e.g., phone, email address.)
Note: Items 2-5 may be repeated for additional errata. All recommendations will be evaluated by
the staff. Any substantive changes will require submission to the relevant subcommittee for
incorporation into a subsequent supplement.
Please return comments to fax +1 410-266-2047 or standards@arinc.com