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ATA 31 – INDICATING AND RECORDING
SYSTEM
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DGT94085
TABLE OF CONTENTS
ISSUE 3
02-31 ATA 31 – INDICATING AND RECORDING SYSTEM
02-31-00 TABLE OF CONTENTS
02-31-05 GENERAL
Introduction
02-31-10 AURAL WARNING
Introduction
Sources
Description
Circuit breaker
List of aural warnings
CAS messages
02-31-15 DFDR AND CVR
Digital Flight Data Recorder (DFDR)
Cockpit Voice Recorder (CVR)
CAS messages
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ATA 31 – INDICATING AND RECORDING
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TABLE OF CONTENTS
DGT94085
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ATA 31 – INDICATING AND RECORDING
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DGT94085
GENERAL
ISSUE 3
INTRODUCTION
The indicating and recording system chapter comprises a description of the aural warning, the
Digital Flight Data Recorder (DFDR) and the Cockpit Voice Recorder (CVR).
¾ For TCAS and EGPWS descriptions, see CODDE1 - ATA 34 - Surveillance
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ATA 31 – INDICATING AND RECORDING
SYSTEM
ISSUE 3
GENERAL
DGT94085
FIGURE 02-31-05-00 FLIGHT DECK OVERVIEW
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CODDE 1
ATA 31 – INDICATING AND RECORDING
SYSTEM
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DGT94085
AURAL WARNING
ISSUE 3
INTRODUCTION
The audio warnings are normally associated with CAS messages. They notify the crew of an
abnormal or emergency situation. They can be of two types: voice message or tone.
The aural warning system consists of three drivers: a master driver, a slave driver and the
TCAS. Each of them contains groups of alerts, which act together in accordance with priority
rules.
SOURCES
The two drivers called master and slave are monitored within MAU 1A and MAU 2A. MAU 1A
is powered by bus ESS and MAU 2A is powered by bus B1.
The TCAS alerts are generated by the TCAS equipment, which is independent from the MAU:
they are directly sent to the audio channels.
All aural warnings are sent to the cockpit speakers through the AUDIO panel of each crew
member.
FIGURE 02-31-10-00 AURAL WARNING
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ATA 31 – INDICATING AND RECORDING
SYSTEM
ISSUE 3
AURAL WARNING
DGT94085
CODDE 1
DESCRIPTION
AUDIO WARNINGS DRIVERS
The audio warnings are played through three drivers:
- the slave driver, which contains the horizontal stabilizer trim running, the altitude and the
Auto-Throttle normal disengagement,
- the master driver, which contains all other audio warnings,
- the TCAS, which is completely independent from the other drivers.
PRIORITY GROUPS
Since the drivers are independent from each other, it is possible to have alerts on the three
drivers at the same time. To avoid having too many alerts at the time, the warnings have
been grouped together and priorities between those groups have been defined.
Each driver contains several groups of audio alerts, called priority groups. When two alerts
of different groups are triggered at the same time, only the aural warning of the highest
priority group is heard. When the alert of the highest priority group stops, the audio warning
of the lowest priority group is then heard, if still present.
Priorities have also been set within each group. In fact, all alerts are heard in sequence,
beginning with the one of the highest priority.
The following table shows the priority groups in a decreasing order of priorities for all three
drivers:
NOTE
If a condition for EGPWS aural alert exists, the TCAS is forced in “TA only” mode (no
audio warning). When the EGPWS alert disappears, the TCAS is automatically
reconfigured to the TA/RA mode.
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ATA 31 – INDICATING AND RECORDING
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DGT94085
AURAL WARNING
ISSUE 3
DRIVER
TCAS
SLAVE
PRIORITY GROUPS
Group 1
Group 1
Group 1
Group 2
Group 3
MASTER
Group 4
Group 5
-
All TCAS alerts
-
Horizontal stabilizer trim running
-
Altitude
-
Normal Auto Throttle disengagement
-
Stall
-
Windshear
-
Overspeed
-
Fire
-
Master warning
-
Master caution
-
EGPWS warning
-
Cabin pressure
-
Nothing (spare)
-
All EGPWS cautions
-
No take off
-
Gear
-
Increase speed
-
Flaps
-
Altitude
-
Auto Pilot disengagement
-
Abnormal Auto Throttle disengagement
The complete list of audio warnings (condition and associated tone or voice message) can
be found at the end of this sub-section.
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ATA 31 – INDICATING AND RECORDING
SYSTEM
ISSUE 3
AURAL WARNING
DGT94085
CODDE 1
EYEBROW PUSHBUTTONS
Three pushbuttons on the glareshield allow the crew to mute specific system aural warnings:
MASTER
-
pushbutton lights up when a red CAS message appears in the ENG-CAS window.
Pushing the MASTER WARNING button implies that the crew has taken notice of the
alarms. The pushbutton light will go out and the associated audio alert will stop.
-
pushbutton lights up when a yellow CAS message appears in the ENG-CAS
window. Pushing on the MASTER CAUTION button will turn it off and silence the
associated audio alert.
-
WARNING
SIL pushbutton allows to silence three aural alarms:
MASTER
o
the CABIN warning, which can be silenced by either pressing the
pushbuttons,
o
the
FI RE
X
MASTER
warnings, which will stop if either
BARO
SWAP
PUSH
STD
PUSH
STD
BAR O
VHF
MASTER
MASTER
WA RNING
CAUTION
SIL
FMS
MSG
8.33
25
PUSH
FR EQ
EVENT
VHF
PUSH
FR EQ
FD/TD
APP
SPEED
M
A
C
H
MAN
TRK
PUSH
CHG
PUSH
SYNC
LNAV
ON
ON
AT
HDG/TRK
AP
MASTER
WARNING
CAUTION
P
A
T
H
V
S
UP
ON
MASTER
or
VS
SWAP
PUSH
STD
1000
FT
ON
PUSH
STD
BAR O
VHF
FD/TD
8.33
25
ON
VNAV
ON
VHF
ALT
SIL
BARO
ASEL
100
FT
or
SIL pushbuttons are pressed.
ON
YD
ON
PUSH
SYNC
CLB
DN
D
E
G
HDG
PUSH
CHG
ON
PILOT SIDE
HDG/TRK
K
T
S
FMS
WARNING
WARNING
PUSH
FR EQ
EVENT
FMS
MSG
SIL
MASTER
MASTER
CAUTION
WA RNING
SIL
FIGURE 02-31-10-01 MASTER WARNING, MASTER CAUTION AND SIL LIGHT PUSHBUTTONS ON
THE EYEBROW
CIRCUIT BREAKER
FIGURE 02-31-10-02 AUDIO WARNING CIRCUIT BREAKER
AUDIO WARN ESS circuit breaker switch off the audio warning driver located in the MAU1A.
AUDIO WARN B circuit breaker switch off the audio warning driver located in the MAU2A.
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ATA 31 – INDICATING AND RECORDING
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DGT94085
AURAL WARNING
ISSUE 3
LIST OF AURAL WARNINGS
All the aural warnings and their associated tone voice message are described in the following
table.
DESCRIPTION
COLOR
(WARNING OR
CAUTION)
TONE/VOICE MESSAGE
TYPE
Stall warning
RED
"STALL"
Continuous
(Mode 7)
Windshear warning
RED
(Siren) "WINDSHEAR,
WINDSHEAR, WINDSHEAR"
Single
Overspeed alert
RED
Pulsing horn
Continuous
Fire
RED
2 tones signal
Continuous
Master warning
RED
Chime
Continuous
Master caution
AMBER
Chime (different from the master
warning one)
Continuous
(mode 1)
Pull-up
RED
"PULL-UP"
Continuous
(mode 2)
Pull-up preface
AMBER
"TERRAIN, TERRAIN"
Single
(mode 2)
Pull-up
RED
"PULL-UP"
Continuous
Terrain awareness preface
AMBER
Terrain awareness warning
RED
Obstacle awareness
preface
AMBER
Obstacle awareness
warning
RED
"PULL-UP"
Continuous
Cabin pressure
RED
"CABIN"
Continuous
TCAS RA
RED
"DESCEND, DESCEND, NOW,
DESCEND, DESCEND NOW"
Single
TCAS RA
RED
"CLIMB, CLIMB, NOW, CLIMB,
CLIMB, NOW"
Single
"TERRAIN, TERRAIN" (FAA)
"TERRAIN AHEAD" (EASA)
"PULL-UP"
"OBSTACLE, OBSTACLE" (FAA)
"OBSTACLE AHEAD" (EASA)
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Single
Continuous
Single
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ATA 31 – INDICATING AND RECORDING
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ISSUE 3
AURAL WARNING
DGT94085
CODDE 1
DESCRIPTION
COLOR
(WARNING OR
CAUTION)
TONE/VOICE MESSAGE
TYPE
TCAS RA
RED
"INCREASE DESCENT,
INCREASE DESCENT"
Single
TCAS RA
RED
"INCREASE CLIMB, INCREASE
CLIMB"
Single
TCAS RA
RED
"DESCEND, DESCEND"
Single
TCAS RA
RED
"DESCEND, CROSSING
DESCEND, DESCEND,
CROSSING DESCEND"
Single
TCAS RA
RED
"CLIMB, CROSSING CLIMB,
CLIMB, CROSSING CLIMB"
Single
TCAS RA
RED
"CLIMB, CLIMB, CLIMB"
Single
TCAS RA
AMBER
"ADJUST VERTICAL SPEED,
ADJUST"
Single
TCAS RA
AMBER
"MAINTAIN VERTICAL SPEED,
MAINTAIN"
Single
TCAS RA
AMBER
"MAINTAIN VERTICAL SPEED,
CROSSING MAINTAIN"
Single
TCAS RA
AMBER
"MONITOR VERTICAL SPEED,
MONITOR VERTICAL SPEED"
Single
TCAS TA
AMBER
TRAFFIC, TRAFFIC
Single
TCAS TA
WHITE
"CLEAR OF CONFLICT"
Single
(mode 2)
Terrain
AMBER
"TERRAIN"
Continuous
(mode 6)
Minimums
AMBER
"MINIMUMS"
Single
Terrain awareness caution
AMBER
"CAUTION TERRAIN" (pause)
"CAUTION TERRAIN" (7sec
pause)
Continuous
Obstacle awareness
caution
AMBER
"CAUTION OBSTACLE" (pause)
"CAUTION OBSTACLE" (7sec
pause)
Continuous
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ATA 31 – INDICATING AND RECORDING
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DGT94085
AURAL WARNING
ISSUE 3
DESCRIPTION
COLOR
(WARNING OR
CAUTION)
TONE/VOICE MESSAGE
TYPE
(mode 4)
Too low terrain
AMBER
"TOO LOW TERRAIN"
Single
(Terrain clearance floor)
Too low terrain
AMBER
"TOO LOW TERRAIN"
Single
(mode 6)
Altitude call-outs
AMBER
1,000
Single
500
Single
300
Single
200
Single
50
Single
40
Single
20
Single
10
Single
5
Single
(mode 4)
Too low gear
AMBER
"TOO LOW GEAR"
Single
(mode 4)
Too low flaps
AMBER
"TOO LOW FLAPS"
Single
(mode 1)
Sink rate
AMBER
"SINK RATE" (pause) "SINK
RATE"
Single
(mode 3)
Don't sink
AMBER
"DON'T SINK" (pause) "DON'T
SINK"
Single
(mode 5)
Glideslope
AMBER
"GLIDESLOPE"
Single
(mode 6)
Approaching DH
AMBER
"APPROACHING MINIMUMS"
Single
(mode 6)
Bank angle
AMBER
"BANK ANGLE" (pause) "BANK
ANGLE"
Single
(mode 7)
Windshear alert
AMBER
Quiet
–
Horizontal stab TRIM
running
–
Clacker
Continuous
No Take-off
RED
"NO TAKE-OFF"
Continuous
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ATA 31 – INDICATING AND RECORDING
SYSTEM
ISSUE 3
AURAL WARNING
DGT94085
CODDE 1
COLOR
(WARNING OR
CAUTION)
TONE/VOICE MESSAGE
TYPE
AMBER
"GEAR"
Continuous
Low speed
AMBER
"INCREASE SPEED"
Continuous
Flaps extended and speed
is above VFE
AMBER
"FLAPS"
Continuous
Altitude alert
AMBER
"ALTITUDE"
Single
AutoPilot:
disengagement
RED
"AUTOPILOT"
Continuous
Auto-Throttle:
abnormal disengagement
AMBER
"AUTO-THROTTLE"
Continuous
Auto-Throttle:
normal disengagement
AMBER
"AUTO-THROTTLE"
Single
DESCRIPTION
One gear is not locked
extended and
-
RA < 500 ft (ZRA valid
or invalid)
-
IAS < 150 kt in
decreasing, or
-
IAS < 155 kt in
increasing
-
both engine power
levers < MAX CLB
CAS MESSAGES
CAS MESSAGE
AURAL WARN .. FAIL
DEFINITION
Indication of aural warning system (1/2) failure(s)
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ATA 31 – INDICATING AND RECORDING
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DGT94085
DFDR AND CVR
ISSUE 3
DIGITAL FLIGHT DATA RECORDER (DFDR)
GENERAL
The DFDR records the last 25 hours of flight data information; it is directly powered by A2
bus. The DFDR begins recording as soon as it is powered on; and stops when powered off.
LOCATION
The DFDR is located at the rear of the aircraft, on the left side. It can be accessed through
the mechanic’s servicing door.
FIGURE 02-31-15-00 DFDR LOCATION
NORMAL OPERATION
Crew members can identify on the record a specific event to be analyzed later, by pressing
one of the EVENT pushbuttons located on each side of the glareshield for at least 1 second.
There is no indication to the crew that the EVENT pushbutton has been pressed.
BARO
SWAP
VHF
MASTER
MASTER
WARRNING CAUTION
SIL
FMS
MSG
EVENT
PUSH
FREQ
VHF
PUSH
STD
FD/TD
8.33
25
M
A
C
H
MAN
PUSH
CHG
ON
AT
PILOT SIDE
HDG/TRK
HDG
TRK
ON
HDG/TRK
P
A
T
H
V
S
PUSH
SYNC
LNAV
BARO
ASEL
UP
ON
AP
VS
SWAP
PUSH
STD
ON
YD
ON
PUSH
SYNC
PUSH
CHG
CLB
DN
D
E
G
K
T
S
FMS
ON
PUSH
FREQ
APP
SPEED
PUSH
STD
BARO
1000
FT
100
FT
ON
PUSH
STD
BARO
VHF
FD/TD
8.33
25
ON
VNAV
ON
ALT
VHF
EVENT
PUSH
FREQ
EVENT
FIGURE 02-31-15-01 PILOT EVENT MARKER PUSHBUTTON
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FMS
MSG
SIL
MASTER
MASTER
CAUTION
WARRNING
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ATA 31 – INDICATING AND RECORDING
SYSTEM
ISSUE 3
DFDR AND CVR
DGT94085
CODDE 1
ABNORMAL OPERATION
The status of the DFDR is periodically auto-checked. If a failure is detected, the following
CAS messages can appear.
CONTEXT
RESULT
DFDR 1 FAIL
CAS message
DFDR1 failure on ground
+
DFDR1 failure in-flight
light on
DFDR 1 FAIL
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CAS message
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ATA 31 – INDICATING AND RECORDING
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DGT94085
DFDR AND CVR
ISSUE 3
COCKPIT VOICE RECORDER (CVR)
GENERAL
The CVR records the last 2 hours of crew and radio conversations; it is directly powered by
B2 BUS. The CVR begins recording as soon as it is powered on; and stops when powered
off.
LOCATION
The CVR is located at the rear of the aircraft, on the right side. It can be accessed through
the mechanic’s servicing door.
FIGURE 02-31-15-02 CVR LOCATION
The cockpit microphone, located on the right side of the eyebrow, records the cockpit
conversations:
Cockpit microphone
BARO
SWAP
PUSH
STD
PUSH
STD
BA RO
VHF
MASTER
MASTER
WARRN IN G
CAUTION
SIL
FMS
MSG
8.33
25
PUSH
FR EQ
EVENT
VHF
PUSH
FR EQ
FD/TD
APP
SPEED
M
A
C
H
MAN
HDG
TRK
PUSH
CH G
YD
PUSH
SYNC
LNAV
BARO
ASEL
P
A
T
H
V
S
UP
VS
SWAP
PUSH
STD
ON
ON
PUSH
SYNC
PUSH
CHG
CLB
DN
D
E
G
FMS
ON
PILOT SIDE
HDG/TRK
K
T
S
100
FT
1000
FT
ON
PUSH
STD
BA RO
VHF
FD/TD
8.33
25
ON
VNAV
ON
ON
ON
ON
AT
HDG/TRK
AP
ALT
VHF
PUSH
FR EQ
FIGURE 02-31-15-03 COCKPIT MICROPHONE LOCATION
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EVENT
FMS
MSG
SIL
MASTER
MASTER
CAUTION
WARRN IN G
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ATA 31 – INDICATING AND RECORDING
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ISSUE 3
DFDR AND CVR
DGT94085
CODDE 1
NORMAL OPERATION
Listening to and erasing the CVR record
On the ACP, the CVR pushbutton allows crew members to select the CVR audio:
the current audio channels recorded by the CVR are then heard.
The ERS pushbutton allows to erase the entire CVR record. This action can only be
performed when the PAX door is open and the CVR audio pushbutton is selected. A tone
emitted in the crew member headsets indicates that the record has been erased.
FIGURE 02-31-15-04 CVR CONTROLS ON THE AUDIO PANEL
CVR tests
The CVR can be tested manually, it is done by clicking the CVR1 or CVR2 (option)
softkey on the TEST page of the MDU. This will trigger a 2 s tone indicating that CVR is
operating normally.
FIGURE 02-31-15-05 CVR TEST ON TEST WINDOW
In addition the CVR, like the DFDR, is regularly auto-checked.
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DGT94085
DFDR AND CVR
ISSUE 3
ABNORMAL OPERATION
If the CVR tests reveal a CVR failure, the following CAS messages can appear.
CONTEXT
RESULT
CVR 1 FAIL
CVR1 failure on ground
+
CAS message
light on
CVR 1 FAIL
CVR1 failure in-flight
CAS message
CAS MESSAGES
CAS MESSAGE
DEFINITION
CVR .. FAIL
On ground, indication of Cockpit Voice Recorder (1/2)
failure (second CVR is optional)
CVR .. FAIL
In-flight, indication of Cockpit Voice Recorder (1/2)
failure (second CVR is optional)
DFDR .. FAIL
On ground, indication of Digital Flight Data Recorder
(1/2) failure (second DFDR is optional)
DFDR .. FAIL
In-flight, indication of Digital Flight Data Recorder
(1/2) failure (second DFDR is optional)
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ATA 31 – INDICATING AND RECORDING
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DFDR AND CVR
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