APPENDIX 7 – A320 FAMILY LANDING GEAR
OVERHAUL PROCEDURES DOCUMENT
01March 2017
Page 1
APPENDIX 7 – A320 FAMILY LANDING GEAR OVERHAUL
PROCEDURES DOCUMENT
Contents
SUMMARY OF CHANGES..................................................................................................................... 3
1.
INTRODUCTION ............................................................................................................................ 4
1.1
PURPOSE ................................................................................................................................ 4
1.2
USING THESE PROCEDURES ..................................................................................................... 4
1.3
DEFINITIONS ............................................................................................................................ 5
1.3.1 Landing Gear ..................................................................................................................... 5
1.3.2 Landing Gear Overhaul ..................................................................................................... 5
1.3.3 Work Scope ....................................................................................................................... 5
1.3.4 Detailed Inspection (DET) ................................................................................................. 5
1.3.5 Special Detailed Inspection (SDI)...................................................................................... 6
1.4
APPLICABILITY ......................................................................................................................... 7
2.
MINIMUM INSPECTION TASKS ................................................................................................. 18
2.1
2.2
2.3
3.
GENERAL REQUIREMENTS ...................................................................................................... 31
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
4.
PREPARATION AND DISPATCH TO MRO ................................................................................... 31
RECEIPT AT MRO .................................................................................................................. 31
DISASSEMBLY ........................................................................................................................ 31
PREPARATION FOR EXAMINATION............................................................................................ 31
COMPONENTS SUBJECT TO INSPECTION .................................................................................. 31
REPAIRS ................................................................................................................................ 32
RESTORATION OF PROTECTIVE TREATMENTS OF PARTS SUBJECT TO INSPECTION IN SECTION 2 32
RE-ASSEMBLY........................................................................................................................ 32
RETURN CONDITIONS TO OWNER/OPERATOR .......................................................................... 33
PERMANENT DISPOSAL OF SCRAP AIRCRAFT PARTS AND MATERIALS ....................................... 33
ITEMS NOT SUBJECT TO OVERHAUL ..................................................................................... 34
4.1
4.2
4.3
4.4
5.
MRBR SYSTEMS TASKS ........................................................................................................ 19
MRBR STRUCTURES TASKS................................................................................................... 22
ON-AIRCRAFT INSPECTION REQUIREMENTS SATISFIED BY OVERHAUL ...................................... 29
LRUS NOT SUBJECT TO OVERHAUL ........................................................................................ 34
ELECTRICAL HARNESSES ....................................................................................................... 34
HYDRAULIC HOSES AND PIPE ASSEMBLIES .............................................................................. 34
REPAIR .................................................................................................................................. 34
REPORTING REQUIREMENTS .................................................................................................. 35
GLOSSARY OF TERMS ...................................................................................................................... 36
01March 2017
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APPENDIX 7 – A320 FAMILY LANDING GEAR OVERHAUL
PROCEDURES DOCUMENT
SUMMARY OF CHANGES
Summary of Changes for this Revision Dated 01 March 2017
Revision
Code
R
R
R
R
R
01March 2017
Page Reference
Description of Change
Page 7 to 17
Page 18
Page 18 to 27
Page 11
Page 34
Update of Applicability Tables
“In Shop” added to beginning of Section 2
Update of CMMs References
EV Retraction Actuator Added to Table
Update Airbus World Reference to Reporting Forms
Page 3
APPENDIX 7 – A320 FAMILY LANDING GEAR OVERHAUL
PROCEDURES DOCUMENT
1. Introduction
1.1 Purpose
The purpose of these Procedures is to identify the minimum scheduled maintenance tasks,
as agreed by Airbus, the ISC and the Landing Gear Manufacturer, of the A320 Family
Landing Gear Overhaul. The Tasks identified in this Procedures Document provide the
formal Instructions for Continued Airworthiness for the A320 Family Landing Gear Overhaul.
This Procedures Document can be used as the basis for the creation of an Overhaul Work
Scope agreement between an Owner/Operator and a Vendor/MRO.
NOTE: This Overhaul Procedures Document for the A320 Family Landing Gear Overhaul
replaces the following Landing Gear Restoration VSBs:
• 200-32-295 “LANDING GEAR - MAIN LANDING GEAR - DEFINITION OF RESTORATION TASKS FOR THE
MAIN LANDING GEAR”
•
201-32-48 “LANDING GEAR - MAIN LANDING GEAR - DEFINITION OF RESTORATION TASKS FOR THE
•
580-32-3170 “LANDING GEAR - NOSE LANDING GEAR - DEFINITION OF RESTORATION TASKS FOR THE
MAIN LANDING GEAR”
NOSE LANDING GEAR”
1.2 Using These Procedures
These Procedures contain five sections. Section 1 is an Introduction.
Sections 2 and 3 describe the minimum overhaul standard. Section 4 is for items not subject
to Overhaul, and goes beyond the minimum overhaul standard. Section 5 is for reporting any
findings during Overhaul.
These Overhaul Procedures must be used in conjunction with the applicable CMMv and
CMMm.
Section 2 - Minimum Inspection Tasks
This section lists the requirements of the ATA 32 Tasks in the A320FAM
Maintenance Review Board Report, which define the minimum inspection standard
for an Overhauled Landing Gear.
Section 3 - General Requirements
This section contains general requirements and accomplishment instructions to carry
out the Overhaul.
Section 4 – Items Not Subject to Overhaul
This section contains information on the minimum instructions for continued
airworthiness of items identified as Not Subject to Overhaul but require inspection
and test to establish that their serviceability meets airworthiness standards.
NOTE: Recommended Service Bulletins/Vendor Service Bulletins
The embodiment of Recommended Service Bulletins (SB) or Vendor Service Bulletins (VSB)
that the Owner/Operator may require to improve the operational reliability or performance of
the Landing Gears is not included in the minimum overhaul standard Work Scope.
01March 2017
Page 4
1.3 Definitions
1.3.1
Landing Gear
A Landing Gear, for the purposes of these Overhaul Procedures, is defined as an assembly
of all the units listed in the ‘Applicability’ section of this document.
Components identified with an asterisk (*) in the table can be overhauled separately from the
rest of the Landing Gear.
1.3.2
Landing Gear Overhaul
A Landing Gear Overhaul, for the purpose of these Procedures, is defined as a process that
includes the disassembly, cleaning, check, inspection, repair or replacement of the parts
contained in the MRBR Tasks. These parts must then be reassembled, adjusted, refinished
and tested as appropriate.
A Landing Gear Overhaul also ensures that the Landing Gear is in complete conformity with
the initial manufacturing and/or repair limits as specified in the applicable Instructions for
Continued Airworthiness.
1.3.3
Work Scope
A Work Scope defines all the work required by the Owner/Operator to be accomplished at
the opportunity of the Overhaul of the Landing Gear. This will include all the Tasks listed in
the ‘Minimum Overhaul Tasks’ section of these Procedures. It can also include additional
items as required by the Owner/Operator.
This additional work, such as embodiment of recommended Service Bulletins, any
inspections or replacements of items, should be agreed between the Owner/Operator and
the MRO.
These additional tasks are optional and may be performed at the discretion of the
Owner/Operator based on their own operational and economic considerations.
1.3.4
Detailed Inspection (DET)
An intensive visual examination of a specific item, installation or assembly to detect damage,
failure or irregularity. This could include tactile assessment in which a component or
assembly can be checked for tightness/security. Available lighting is normally supplemented
with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such
as mirrors, magnifying lenses may be necessary. Surface cleaning and elaborate access
procedures may be required.
NOTE
Detailed Inspection is covered by DETAILED INSPECTION, VISUAL INSPECTION
or EXAMINE PARTS VISUALLY in the applicable CMM.
01March 2017
Page 5
1.3.5
Special Detailed Inspection (SDI)
An examination of a specific item, installation, or assembly making use of specialized
Inspection Techniques such as Non Destructive Testing (NDT) and/or equipment.(e.g.
Boroscope, Videoscope, Tap Test) to detect damage, failure or irregularity. Intricate cleaning
and substantial access or disassembly procedure may be required. Classification of a task
as an SDI does not define the required qualifications for the person performing the task.
NOTE
Special Detailed Inspection is covered by FITS AND CLEARANCES or NDT in the
applicable CMM.
01March 2017
Page 6
1.4 Applicability
A318/A319/A320/A321
MAIN LANDING GEAR
01March 2017
Page 7
Aircraft Affected:
AIRBUS A318/A319/A320
Main Landing Gear (Safran Landing Systems)
Components Requiring Overhaul
Description
Part Number
CMM Ref
Main Landing Gear
201376 SERIES
32-11-32
Main Landing Gear
201523 SERIES
32-12-23
Main Landing Gear (EV)
10-450101 SERIES
10-450102 SERIES
10-450201 SERIES
10-450202 SERIES
MLG Unit
201376 SERIES
32-11-32
MLG Unit
201582 SERIES
32-12-24
Main Landing Gear Leg
201371 SERIES
32-11-33
Main Landing Gear Leg
201540 SERIES
32-12-25
Main Landing Gear Leg (EV)
10-450301 SERIES
10-450302 SERIES
10-450401 SERIES
10-450402 SERIES
32-12-80 (EV)
Main Landing Gear Leg (EV)
10-450501 SERIES
10-450502 SERIES
10-450601 SERIES
10-450602 SERIES
32-12-82 (EV)
Side Stay Complete
201166 SERIES
Side Stay Complete (EV)
10-451901 SERIES
10-452001 SERIES
Lock Stay
201058 SERIES
32-11-17
32-12-27
Lock Stay
201403001
32-11-87
Lock Stay (EV)
10-452501 SERIES
Basic Side Stay
201163 SERIES
Basic Side Stay (EV)
10-452101 SERIES
Retraction Actuator*
201590 SERIES
32-31-86
Retraction Actuator*
114193 SERIES
32-31-47
Retraction Actuator* (EV)
10-451701 SERIES
32-12-79 (EV)
32-11-25
32-12-26
32-12-81 (EV)
32-12-84 (EV)
32-11-26
32-12-83 (EV)
32-31-04 (EV)
AIRBUS Components Requiring Overhaul
MLG Rear Pintle Pin
MLG Rear Pintle Pin Nut
D32153032 SERIES
D32156004 SERIES
CMMm:
32-11-07
(ALL)
D32140220 SERIES
D32156010 SERIES
D32150011 SERIES
CMMm
32-11-04
(ALL)
*These Items can be overhauled separately from the rest of the Landing Gear
01March 2017
Page 8
LRUs Not Subject To Overhaul
NOTE: These LRUs are to remain with the Landing Gear for inspection/test (Refer to Section 4)
Description
Part Number
CMM Ref
Damper
201419 SERIES
32-11-93
Damper (EV)
10-450701 SERIES
MLG Leg and Axle Harness
201520 SERIES
201401 SERIES
32-11-44
MLG Leg and Axle Harness
201134 SERIES
201158 SERIES
201159 SERIES
201168 SERIES
32-11-43
MLG Harness
201399 SERIES
201400 SERIES
32-12-28
Axle Harness
201401 SERIES
32-12-29
Main Landing Gear Dressings
201161 SERIES
32-11-24
Lock Stay Actuator
114095 SERIES
32-11-21
Lock Stay Actuator (EV)
10-452701 SERIES
Lock Springs
01March 2017
201059001
32-12-85 (EV)
32-31-05 (EV)
32-11-19
Page 9
Aircraft Affected:
AIRBUS A321 (ALL)
Main Landing Gear (Safran Landing Systems)
Components Requiring Overhaul
Description
Part Number
CMM Ref
Main Landing Gear
201388 SERIES
201685 SERIES
32-11-81
Main Landing Gear
201528 SERIES
32-12-16
Main Landing Gear
201521 SERIES
32-12-10
Main Landing Gear
201584 SERIES
201659 SERIES
32-12-20
Main Landing Gear (EV)
10-452901 SERIES
10-452902 SERIES
10-453001 SERIES
10-453002 SERIES
MLG Unit
201387 SERIES
32-11-82
MLG Unit
201585 SERIES
32-12-21
MLG Unit
201523 SERIES
32-12-11
Main Landing Gear Leg
201522 SERIES
32-12-12
Main Landing Gear Leg
201383 SERIES
32-11-83
Main Landing Gear Leg
201587 SERIES
32-12-22
Main Landing Gear Leg (EV)
10-453101 SERIES
10-453102 SERIES
10-453201 SERIES
10-453202 SERIES
32-12-87 (EV)
Main Landing Gear Leg (EV)
10-453301 SERIES
10-453302 SERIES
10-453401 SERIES
10453402 SERIES
32-12-89 (EV)
Side Stay Complete
201390 SERIES
32-11-85
Side Stay Complete
201527 SERIES
32-12-17
Side Stay Complete
201524 SERIES
201660 SERIES
32-12-13
Side Stay Complete (EV)
10-453501 SERIES
10-453601 SERIES
Lock Stay
201403001
32-11-87
Lock Stay
201531001
32-12-15
Basic Side Stay
201389 SERIES
32-11-86
Basic Side Stay
201526 SERIES
32-12-18
Basic Side Stay
201525 SERIES
201661 SERIES
32-12-14
Basic Side Stay (EV)
10-453701 SERIES
Retraction Actuator*
114193 SERIES
32-31-47
Retraction Actuator*
201590 SERIES
32-31-86
01March 2017
32-12-86 (EV)
32-12-88 (EV)
32-12-90 (EV)
Page 10
Main Landing Gear (Safran Landing Systems)
Components Requiring Overhaul
Description
Part Number
Retraction Actuator* (EV)
10-451701 SERIES
CMM Ref
32-31-04 (EV)
AIRBUS Components Requiring Overhaul
MLG Rear Pintle Pin
D32153032 SERIES
D32156004 SERIES
CMMm:
32-11-07
(ALL)
MLG Rear Pintle Pin Nut
D32140220 SERIES
D32156010 SERIES
D32150011 SERIES
CMMm
32-11-04
(ALL)
*These Items can be overhauled separately from the rest of the Landing Gear
LRUs Not Subject To Overhaul
NOTE: These LRUs are to remain with the Landing Gear for inspection/test (Refer to Section 4)
Description
Part Number
CMM Ref
Damper
201419 SERIES
32-11-93
Main Landing Gear Harness
201399 SERIES
201400 SERIES
32-11-88
32-11-45
32-12-77
32-12-28
Axle Harness
201401 SERIES
201402 SERIES
32-11-89
32-11-46
32-12-29
32-12-78
Lock Stay Actuator
114095 SERIES
32-11-21
Lock Springs
201059001
32-11-19
01March 2017
Page 11
A320
MAIN LANDING GEAR (BOGIE)
01March 2017
Page 12
Aircraft Affected:
AIRBUS A320
Main Landing Gear (Bogie) (Safran Landing Systems)
Components Requiring Overhaul
Description
Part Number
CMM Ref
Main Landing Gear
201175 SERIES
32-11-27
Main Landing Gear Leg
201173 SERIES
32-11-28
Bogie Beam Assembly
201171 SERIES
32-11-30
Side Stay Complete
201166 SERIES
32-11-25
32-11-26
Lock Stay
201058 SERIES
32-11-17
32-12-27
Basic Side Stay
201163 SERIES
32-11-26
Retraction Actuator*
114193 SERIES
32-31-47
Retraction Actuator*
201590 SERIES
32-31-86
AIRBUS Components Requiring Overhaul
MLG Rear Pintle Pin
D32153032 SERIES
D32156004 SERIES
CMMm:
32-11-07
(ALL)
MLG Rear Pintle Pin Nut
D32140220 SERIES
D32156010 SERIES
D32150011 SERIES
CMMm
32-11-04
(ALL)
*These Items can be overhauled separately from the rest of the Landing Gear
LRUs Not Subject To Overhaul
NOTE: These LRUs are to remain with the Landing Gear for inspection/test (Refer to Section 4)
Description
Part Number
CMM Ref
Main Landing Gear Dressings
201172 SERIES
32-11-29
32-11-42
Lower Electrical Harness
201520 SERIES
201401 SERIES
201402 SERIES
32-11-44
Bogie Dressings
201170 SERIES
32-40-17
Bogie Pitch Trimmer
201169 SERIES
32-31-36
Lock Stay Actuator
114095 SERIES
32-11-21
Lock Springs
201059001
32-11-19
01March 2017
Page 13
A318/A319/A320/A321
Nose Landing Gear
01March 2017
Page 14
Aircraft Affected:
AIRBUS A318/A319/A320/A321
Nose Landing Gear (Safran Landing Systems)
Components Requiring Overhaul
Description
Part Number
CMM Ref
NLG Leg
D231750 SERIES
32-27-01
32-27-07
32-27-49
32-27-41
32-27-17
NLG Leg
D231751 SERIES
32-27-09
32-27-10
NLG Leg
D235890 SERIES
D235895 SERIES
32-27-19
32-27-31
32-27-45
32-27-35
32-27-57
NLG Leg
D237570 SERIES
D237575 SERIES
32-27-38
32-27-40
32-27-46
32-27-59
NLG Leg (EV)
10-375901-000
32-27-70 (EV)
NLG Leg (EV)
10-375902-000
32-27-90 (EV)
NLG Leg Structure
D230640 SERIES
32-27-02
32-27-18
NLG Leg Structure
D235900 SERIES
D235905 SERIES
32-27-20
32-27-36
32-27-47
NLG Leg Structure
D235890 SERIES
D235890 SERIES
32-27-32
NLG Leg Structure (EV)
10-375001-000
32-27-72 (EV)
NLG Leg Structure (EV)
10-375002-000
32-27-92 (EV)
NLG Shock Absorber
D235920 SERIES
32-27-21
32-27-33
32-27-37
NLG Shock Absorber
D235920 SERIES
32-27-48
NLG Shock Absorber (EV)
10-375201-000
32-27-73 (EV)
Forestay
D230730 SERIES
32-37-01
Forestay
D230740 SERIES
32-37-02
Forestay
D235960 SERIES
32-27-22
Forestay
D235990 SERIES
32-27-23
Forestay (EV)
10-375701-000
32-27-77 (EV)
Forestay Assy. (EV)
10-375601-000
32-27-76 (EV)
Lock Stay
201058 SERIES
32-11-17
Lock Link
D230750 SERIES
32-37-03
Lock Link
D236120 SERIES
32-27-24
01March 2017
Page 15
Components Requiring Overhaul
Description
Part Number
CMM Ref
Lock Link (EV)
10-375801-000
32-27-78 (EV)
Actuating Cylinder*
D230710 SERIES
32-37-07
Actuating Cylinder*
D236130 SERIES
32-37-12
Actuating Cylinder* (EV)
10-376001-000
32-27-79 (EV)
AIRBUS Components Requiring Overhaul
Actuating Cylinder Pin Assy*
D3221408000000
CMMm
32-31-07 (ALL)
Actuating Cylinder Sleeve*
D3221407920000
CMMm
32-31-09 (ALL)
*These Items can be overhauled separately from the rest of the Landing Gear
LRUs Not Subject To Overhaul
NOTE: These LRUs are to remain with the Landing Gear for inspection/test (Refer to Section 4)
Description
Part Number
CMM Ref
1M Upper Harness
D231200 SERIES
32-07-01
1M Upper Harness
D231590 SERIES
32-07-05
1M Upper Harness
D236270 SERIES
32-07-09
1M Upper Electrical Harness
(No TPIS) (EV)
10-376301-000
32-27-82 (EV)
1M Upper Electrical Harness (EV)
10-375501-000
32-27-83 (EV)
2M Upper Harness
D236800 SERIES
32-07-10
2M Upper Harness
D231210 SERIES
32-07-02
2M Upper Harness
D231211 SERIES
32-07-11
32-07-08
2M Upper Electrical Harness (EV)
10-375401-000
Intermediate Harness
D231540 SERIES
32-07-04
32-07-07
Intermediate Harness
D236290 SERIES
32-07-13
Lower Harness
D231500 SERIES
32-07-03
Lower Harness
D231600 SERIES
32-07-06
Lower Harness
D236300 SERIES
32-07-12
Lower Electrical Harness (EV)
10-377001-000
Anti-Shimmy Valve
D23116000 SERIES
32-57-02
Towing Fitting
D231230 SERIES
32-27-06
Towing Fitting
D232780 SERIES
D232781 SERIES
D232782 SERIES
D232810 SERIES
D232811 SERIES
32-27-11
Electrical Box
D23354000 SERIES
D23354100 SERIES
32-57-15
Electrical Box
D23119000 SERIES
D23119010 SERIES
32-57-07
01March 2017
32-27-75 (EV)
32-27-84 (EV)
Page 16
LRUs Not Subject To Overhaul
NOTE: These LRUs are to remain with the Landing Gear for inspection/test (Refer to Section 4)
Description
Part Number
CMM Ref
Electrical Box
D23119100 SERIES
32-57-08
Electrical Box
D23119500 SERIES
D23119510 SERIES
32-57-09
Electrical Box
D23119600 SERIES
32-57-10
Electrical Box
D23119700 SERIES
D23119720 SERIES
32-57-13
Electrical Box
D23119750 SERIES
D23119760 SERIES
D23119770 SERIES
32-57-17
Axle Sleeve
D233550 SERIES
32-27-16
Axle Protective Sleeve Assy. (EV)
10-376501-000
Unlock Actuator
D230760 SERIES
32-37-04
Lock Spring
D230770 SERIES
32-37-05
Lock Spring
D236110 SERIES
32-27-27
Lock Spring (EV)
10-376701-000
32-27-81 (EV)
Leg Dressing (EV)
10-375301-000
32-27-74 (EV)
01March 2017
32-27-80 (EV)
Page 17
2. Minimum Inspection Tasks
This section lists the Minimum Inspection Tasks that form a Landing Gear Overhaul
inspection standard.
i.
ii.
Section 2.1 lists the Landing Gear Tasks extracted from the A320FAM MRBR
Systems Section, to be carried out in accordance with the referenced CMMs.
Section 2.2 lists the Landing Gear Tasks extracted from the A320FAM MRBR
Structures Section, to be carried out in accordance with the referenced
CMMs.
Note: Accomplishment of the contents of Sections 2.1 and 2.2 will satisfy all the
requirements of the ATA 32 “OFF-AIRCRAFT” or “In Shop” Tasks in the A320FAM MRBR.
01March 2017
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2.1 MRBR Systems Tasks
To accomplish the following Tasks:
- do a Detailed Inspection in accordance with DETAILED INSPECTION or
VISUAL INSPECTION or EXAMINE PARTS VISUALLY, and
- do a Special Detailed Inspection to include a dimensional check in
accordance with the FITS AND CLEARANCES (referring to INITIAL
MANUFACTURING LIMITS), where applicable,
in accordance with the applicable CMM.
Main Landing Gear
MRBR Task
DESCRIPTION
Number
32.11.00/14 Remove Main Landing Gear For Special Detailed
Inspection In Shop. To Include:
Special Detailed Inspection of MLG Shock Absorber
Internal Components.
Special Detailed Inspection of MLG Fwd Pintle Pin and
Bushings.
Special Detailed Inspection of MLG Aft Pintle Pin and
Spherical Bearing.
Special Detailed Inspection of MLG Side Stay
Bushings, Pins and Gear Attachment Lug Bushings.
Special Detailed Inspection of MLG Lock Stay
Bushings, Pins and Attachment Lug Bushings.
Special Detailed Inspection of MLG Lock Stay Actuator
Bushings, Pins and Attachment Lug Bushings.
Special Detailed Inspection of MLG Retraction Actuator
Gear Attachment Lug Bushings.
Special Detailed Inspection of MLG Slave Link
Bushings Pins Attachment Lug Bushings.
Special Detailed Inspection of MLG Shock Absorber
Upper and Lower Bearings and Upper and Lower
Bearing Housings.
Special Detailed Inspection of MLG Torque Link
Bushings, Pins and Upper and Lower Attachment Lug
Bushings.
32.11.00/19 Remove MLG Bogie Assembly for Special Detailed
Inspection In Shop. To Include:
Special Detailed Inspection of MLG Bogie Beam Pivot
Pin and Bushings, and Attachment Lug Bushings.
Special Detailed Inspection of MLG Bogie Pitch
Trimmer Bearings, Pins and Attachment Lug Bushings.
Special Detailed Inspection of MLG Brake Reaction
Rod Bushings, Pins and Sliding Tube Attachment Lug
Bushings.
01March 2017
APPLICABILITY
ALL
A320-200
POST 20139
PRE 22129
CMM
References
32-11-33
32-12-25
32-11-83
32-12-22
32-12-12
32-11-28
32-11-25
32-12-26
32-11-85
32-12-17
32-12-13
32-11-32
32-12-24
32-11-82
32-12-21
32-12-11
32-11-27
32-12-79 (EV)
32-12-80 (EV)
32-12-81 (EV)
32-12-82 (EV)
32-12-83 (EV)
32-12-84 (EV)
32-12-85 (EV)
32-12-86 (EV)
32-12-87 (EV)
32-12-88 (EV)
32-12-89 (EV)
32-12-90 (EV)
CMMm:
32-11-07
32-11-04
32-11-30
32-11-27
32-31-36
Page 19
MRBR Task
DESCRIPTION
Number
APPLICABILITY
CMM
References
32.11.00/20 Remove MLG Retraction Actuator For Special
Detailed Inspection of Bushings, Spherical
Bearings and Pins In Shop. To Include:
Bushings, Spherical Bearings and Pins.
ALL
32-31-86
32-31-47
32-31-04 (EV)
32.30.00/20 Remove MLG Retraction Actuator For Special
Detailed Inspection of Internal Components In
Shop. To Include:
Internal Components.
ALL
32-31-86
32-31-47
32-31-04 (EV)
01March 2017
Page 20
Nose Landing Gear
MRBR
Task
Number
DESCRIPTION
32.21.00/05 Remove Nose Landing Gear For Special Detailed
Inspection In Shop. To Include:
Special Detailed Inspection of NLG Shock Absorber
Upper and Lower Bearings.
Special Detailed Inspection of NLG Downlock Actuator
Bushings, Pins and Attachment Lug Bushings.
Special Detailed Inspection of NLG Lock Link
Bushings, Pins and Attachment Lug Bushings.
Special Detailed Inspection of NLG Shock Absorber
Internal Components.
Special Detailed Inspection of NLG Torque Link
Bushings, Pins and Upper and Lower Attachment Lug
Bushings.
Special Detailed Inspection of NLG Forestay Bushings,
Pins and Gear Attachment Lug Bushings and Gear and
Airframe Attachment Fittings.
Special Detailed Inspection of NLG Trunnion Bushings
and Pins.
APPLICABILITY
CMM
References
ALL
32-27-21
32-27-37
32-27-33
32-27-57
32-27-59
32-37-01
32-37-02
32-37-03
32-27-70 )EV)
32-27-72 (EV)
32-27-73 (EV)
32-27-74 (EV)
32-27-75 (EV)
32-27-76 (EV)
32-27-77 (EV)
32-27-78 (EV)
32-27-80 (EV)
32-27-81 (EV)
32-27-90 (EV)
32.21.00/09 Remove NLG Actuating Cylinder For Special
Detailed Inspection of Bushings, Spherical
Bearings and Airframe Attachment Pin and Sleeve
In Shop. To Include:
Bushings, Spherical Bearings and Airframe Attachment
Pin and Sleeve.
ALL
32-37-12
32-27-79 (EV)
CMMm
32-31-07 (ALL)
32-31-09 (ALL)
32.30.00/21 Remove NLG Actuating Cylinder For Special
Detailed Inspection of Internal Components In
Shop. To Include:
Internal Components.
ALL
32-37-12
32-27-79 (EV)
32.50.00/02 Remove Nose Wheel Steering Actuator Rack and
Pinion Mechanism for Special Detailed Inspection
in Shop.
ALL
32-27-02
32-27-18
32-27-20
32-27-32
32-27-36
32-27-47
32-27-57
32-27-59
01March 2017
Page 21
2.2 MRBR Structures Tasks
To accomplish the following Tasks:
- do a Detailed Inspection in accordance with DETAILED INSPECTION or
VISUAL INSPECTION or EXAMINE PARTS VISUALLY, and
- do a Special Detailed Inspection to include an NDT inspection, where
applicable,
in accordance with the applicable CMM.
Main Landing Gear
MRBR Task
Number
Description
Applicability
Special Detailed Inspection of Main Landing
Gear Comprising:
− Upper and Lower Side Stay
− Upper and Lower Lock Links
− Lack Stay Cardan
− Cuff
− Triangulation Link
− Banana Link
− Forward Pintle Pin
− Pintle Pin Lock Bolts/Stub Bolts
− Upper Diaphragm Cross Pin
− Upper Pin (Springs)
321105-03-1
− Cuff Pins
− Lock Link/Banana Link Pin
− Lower Pin (Springs)
− Triangulation Link Pin
− Lock Link Lower Pin
− Lock Link Center Pin
− Lock Link Upper Pin
− Lock Stay Cardan Pin
− Side Stay Upper and Lower Cardan
Pins
− Side Stay Pivot Pin
− Aft Pintle Spherical Bearing.
A318
PRE 161202
OR
A319
PRE 161202
OR
A320
PRE 161202
OR
A321
PRE 161346
Special Detailed Inspection of Main Landing
Gear, Upper and Lower Torque Links
Comprising:
− Torque Link Upper
− Torque Link Lower
321110-03-1
− Torque Link Upper Pin
− Torque Link Lower Pin
− Apex Pin
− Apex Pin Nut.
A318
PRE 161202
OR
A319
PRE 161202
OR
A320
PRE 161202
OR
A321
PRE 161346
01March 2017
CMM References
32-11-26
32-12-18
32-11-17
32-12-26
32-11-33
32-12-12
32-12-17
32-11-28
32-11-26
32-11-85
32-11-86
32-12-13
32-12-14
32-11-87
32-12-27
32-12-15
32-11-83
32-12-25
32-12-22
32-11-25
32-11-21
32-11-33 32-12-25
32-11-83 32-11-28
32-12-12 32-12-22
Page 22
MRBR Task
Number
Description
Applicability
CMM References
Special Detailed Inspection of Main Landing
Gear, Side Stay Cardans Comprising:
− Upper Cardan
321111-02-1
− Lower Cardan
− Upper Cardan Nut
− Lower Cardan Nut.
A318
PRE 161202
OR
A319
POST 25485
PRE 161202
OR
A320
POST 25485
PRE 161202
OR
A321
POST 25485
PRE 161346
Special Detailed Inspection of Main Landing
Gear Side Stay Cardans Comprising:
− Upper Cardan
321111-03-2
− Lower Cardan
− Upper Cardan Nut
− Lower Cradan Nut.
A319
PRE 25485
PRE 161202
OR
A320
PRE 25485
PRE 161202
OR
A321
PRE 25485
PRE 161346
Special Detailed Inspection of Main Landing
321116-02-1 Gear Lock Stay Cardan Bracket,
Attachment to Main Fitting.
A319
PRE 26644
OR
A320
PRE 26644
32-11-33
32-11-28
32-12-12
32-11-83
Special Detailed Inspection of Main Landing
Gear, Bogie Beam Comprising:
− Axles (Bogie)
− Sliding Tube (Bogie)
321128-03-1
− Pivot Pin
− Brake Rods
− Brake Rod Pins.
A320-200
POST 20139
PRE 22129
32-11-30
32-11-28
Special Detailed Inspection of Main Landing
Gear, Main Fitting Comprising:
− Main Fitting
− Upper Diaphragm Tube
− Sliding Tube
− Lower Bearing Housing (Twin Wheel).
A318
PRE 161202
OR
A319
PRE 161202
OR
A320
POST 21982
PRE 161202
OR
A321
PRE 161346
321141-01-1
Special Detailed Inspection of Main Landing
Gear, Main Fitting Comprising:
− Main Fitting
321141-01-2
− Upper Diaphragm Tube
− Sliding Tube
− Lower Bearing Housing (Twin Wheel).
01March 2017
A320
PRE 21982
PRE 161202
32-11-86
32-12-14
32-11-26
32-12-18
32-11-86
32-12-14
32-11-26
32-12-18
32-11-33
32-12-22
32-12-25
32-11-83
32-12-12
32-11-28
32-11-33
32-12-22
32-12-25
32-11-83
32-12-12
32-11-28
Page 23
MRBR Task
Number
Description
Applicability
Special Detailed Inspection of Main Landing
Gear, Retraction Actuator Comprising:
− Piston Rod
− Piston Head
321147-01-1
− Nut
− Cylinder
− Gland.
A318
PRE 161202
OR
A319
PRE 161202
OR
A320
PRE 161202
OR
A321
PRE 161346
Special Detailed Inspection of Main Landing
Gear, Rear Pintle Pin and Nut.
A318
PRE 161202
OR
A319
PRE 161202
OR
A320
PRE 161202
OR
A321
PRE 161346
Special Detailed Inspection of Main Landing
Gear, Retraction Actuator Pins Comprising:
321171-01-1
− Retraction Actuator Pin (Main Fitting)
− Retraction Actuator Pin (Rear Spar).
A318
PRE 161202
OR
A319
PRE 161202
OR
A320
PRE 161202
OR
A321
PRE 161346
Special Detailed Inspection of Main Landing
Gear Comprising:
− Upper and Lower Side Stay
− Upper and Lower Lock Links
− Lock Stay Cardan
− Cuff
− Triangulation Link
− Banana Links
− Forward Pintle Pin
− Pintle Pin Lock Bolts/Stub Bolts
− Upper Diaphragm Cross Pin
− Upper Pin (Springs)
321180-01-1
− Cuff Pins
− Lock Link/Banana Link Pin
− Lower Pin (Springs)
− Triangulation Link Pin
− Lock Link Lower Pin
− Lock Link Center Pin
− Lock Link Upper Pin
− Lock Stay Cardan Pin
− Side Stay Upper and Lower Cardan
Pins
− Side Stay Pivot Pin
− Aft Pintle Spherical Bearing.
A318
POST 161202
OR
A319
POST 161202
OR
A320
POST 161202
OR
A321
POST 161346
321169-01-1
01March 2017
CMM References
32-31-86
32-31-47
CMMm:
32-11-07
32-11-04
32-31-86
32-31-47
32-12-79
32-12-80
32-12-82
32-12-81
32-12-84
32-12-83
32-12-86
32-12-87
32-12-89
32-12-88
32-12-90
Page 24
MRBR Task
Number
Description
Applicability
CMM References
A318
Special Detailed Inspection of Main Landing POST 161202
Gear, Upper and Lower Torque Links
32-12-80
OR
Comprising:
32-12-82
A319
− Torque Link Upper
POST 161202 32-12-87
− Torque Link Lower
3211801-01-1
32-12-89
OR
− Torque Link Upper Pin
A320
POST 161202
− Torque Link Lower Pin
OR
− Apex Pin
A321
− Apex Pin Nut.
POST 161346
A318
POST 161202
OR
Special Detailed Inspection of Main Landing
A319
Gear, Side Stay Cardans Comprising:
POST 161202 32-12-81
− Upper Cardan
321182-01-1
32-12-88
OR
− Lower Cardan
A320
− Upper Cardan Nut
POST 161202
− Lower Cardan Nut.
OR
A321
POST 161346
A318
POST 161202
OR
Special Detailed Inspection of Main Landing
A319
Gear, Main Fitting Comprising:
POST 161202
− Main Fitting
321183-01-1
OR
− Upper Diaphragm Tube
A320
− Sliding Tube
POST 161202
− Lower Bearing Housing.
OR
A321
POST 161346
32-12-79
32-12-82
32-12-86
32-12-89
A318
POST 161202
Special Detailed Inspection of Main Landing
OR
Gear, Retraction Actuator Comprising:
A319
− Piston Rod
POST 161202 32-31-04
− Piston Head
321184-01-1
OR
A320
− Nut
POST 161202
− Cylinder
OR
− Gland.
A321
POST 161346
A318
POST 161202
OR
A319
CMMm
POST 161202 32-11-07
Special Detailed Inspection of Main Landing
321185-01-1
32-11-04
OR
Gear, Rear Pintle Pin and Nut.
A320
POST 161202
OR
A321
POST 161346
01March 2017
Page 25
MRBR Task
Number
Description
Applicability
CMM References
A318
POST 161202
OR
A319
Special Detailed Inspection of Main Landing
Gear, Retraction Actuator Pins Comprising: POST 161202
321186-01-1
32-31-04
OR
− Retraction Actuator Pin (Main Fitting)
A320
− Retraction Actuator Pin (Rear Spar).
POST 161202
OR
A321
POST 161346
01March 2017
Page 26
Nose Landing Gear
MRBR Task
Number
Description
Special Detailed Inspection of Nose Landing
Gear Comprising:
− Barrel
− Sliding Tube
− Turning Tube
− Axles
− Forestay Upper Panel
− Lower Link
− Universal Joint
− Lock Link Upper Link
− Lock Link Lower Link
322105-03-1
− Upper Barrel Hinge Pins
− Forestay Barrel Pin
− Retaining Nut Shock Assy.
− Upper Panel To Structure Pins
− Upper Panel To Universal Joint Pin
− Lock Link Center Pin
− Lock Link Lower Pin
− Pin (Lower Link To Universal Joint)
− Cross Pin
− Pin (Actuating Cylinder/Lock Link/Barrel)
− Cylinder.
Applicability
PRE 161203
CMM References
32-27-02
32-27-20
32-27-32
32-27-37
32-27-33
32-37-02
32-27-23
32-27-47
32-27-59
32-27-18
32-27-36
32-27-21
32-27-48
32-37-03
32-27-24
32-27-57
32-37-01
32-27-02
32-27-20
32-27-32
32-27-18
32-27-36
32-27-57
32-27-21
32-27-48
32-27-37
32-27-33
32-27-59
Special Detailed Inspection of Nose Landing
Gear, Torque Links Comprising:
− Upper Torque Link
322110-03-1
− Lower Torque Link
− Torque Link Pins (Upper and Lower)
− Torque Link Apex Pin & Nut.
PRE 161203
Special Detailed Inspection of Nose Landing
Gear, Retraction Actuator Comprising:
− Retraction Actuator Cylinder
− Piston Rod
322152-01-1
− Piston Rod Retaining Ring
− Gland Retaining Ring
− Piston Nut
− Piston Head.
PRE 161203
32-37-12
Special Detailed Inspection of Nose Landing
322158-01-1 Gear Pin, Retraction Actuator to Aircraft
Structure.
PRE 161203
CMMm: CMMm:
32-31-07 32-31-09
01March 2017
Page 27
MRBR Task
Number
Description
Applicability
CMM References
Special Detailed Inspection of Nose Landing
Gear Comprising:
− Barrel
− Sliding Tube
− Turning Tube
− Axles
− Forestay Upper Panel
− Lower Link
− Universal Joint
− Lock Link Upper Link
− Lock Link Lower Link
322180-01-1
− Upper Barrel Hinge Pins
− Forestay Barrel Pin
− Retaining Nut Shock Assy.
− Upper Panel To Structure Pins
− Upper Panel To Universal Joint Pin
− Lock Link Center Pin
− Lock Link Lower Pin
− Pin (Lower Link To Universal Joint)
− Cross Pin
− Pin (Retraction Actuator/Lock Link/Barrel)
− Cylinder.
32-27-70
32-27-72
POST 161203 32-27-73
32-27-77
32-27-76
32-27-78
Special Detailed Inspection of Nose Landing
Gear, Torque Links Comprising:
− Upper Torque Link
322181-01-1
− Lower Torque Link
− Torque Link Pins (Upper and Lower)
− Torque Link Apex Pin & Nut.
32-27-70
POST 161203 32-27-72
32-27-73
Special Detailed Inspection of Nose Landing
Gear, Retraction Actuator Comprising:
− Retraction Actuator Cylinder
− Piston Rod
322182-01-1
− Piston Rod Retaining Ring
− Gland Retaining Ring
− Piston Nut
− Piston Head.
POST 161203 32-27-79
Special Detailed Inspection of Nose Landing
322183-01-1 Gear Pin, Retraction Actuator to Aircraft
Structure.
01March 2017
CMMm: CMMm:
POST 161203 32-31-07 32-31-09
Page 28
2.3 On-Aircraft Inspection Requirements Satisfied by Overhaul
Accomplishment of the Tasks in Section 2.2 satisfies the requirements of the Tasks in the
following table.
Main Landing Gear
MRBR Task
Number
Description
Detailed Inspection of Main Landing Gear, Sliding Tube
(TWIN WHEEL), Brake Attachment Flange, Upper and
321101-01-2 Lower Torque Links, Upper and Lower Torque Link Pins and
Apex Pin & Nut – External Surfaces, except where covered
by Dressings and Bush Flanges.
Satisfied By
Applicability MRBR Task
Number
ALL
321110-03-1
321141-01-1
321141-01-2
321105-03-1
Detailed Inspection of Main Landing Gear, Main Fitting,
Forward Pintle Pin, Forward Pintle Pin Lock/Stub Bolts, Rear
321103-01-1 Pintle Pin & Nut, & Retraction Actuator Attachment Pins External Surfaces, except where covered by Dressings and
Bush Flanges.
ALL
Detailed Inspection of Main Landing Gear, Bogie Beam 321138-01-1 External Surfaces, except where covered by Dressings and
Bush Flanges.
A320-200
POST 20139
PRE 22129
321128-03-1
Detailed Inspection of Main Landing Gear, Sliding Tube
321139-01-1 (Bogie) - External Surfaces, except where covered by
Dressings and Bush Flanges.
A320-200
POST 20139
PRE 22129
321128-03-1
Detailed Inspection of Main Landing Gear, Retraction
321146-01-1 Actuator - External Surfaces, except where covered by
Dressings and Bush Flanges.
ALL
321147-01-1
321105-03-1
321116-02-1
Detailed Inspection of Main Landing Gear, Upper & Lower
Side Stay, Upper & Lower Cardans and Nuts, Upper &
Lower Lock Links, Lock Stay Cardan, Lock Stay Cardan
Bracket & Bolts, Cuff, Triangulation Link, Banana Links,
Upper & Lower Cardan Pins, Side Stay Pivot Pin, Upper Pin
321156-01-1
(Springs), Lock Stay Cardan Pin, Upper & Lower Lock Link
Pins, Lock Link Center Pin, Triangulation Link Pins, Lock
Link/Banana Link Pin, Cuff Pins & Lower (Springs) Pin External Surfaces, except where covered by Dressings,
Bush Flanges and Fittings.
A319
PRE 26644
OR
A320
PRE 26644
Detailed Inspection of Main Landing Gear, Upper & Lower
Side Stay, Upper & Lower Cardans and Nuts, Upper &
Lower Lock Links, Lock Stay Cardan, Cuff, Triangulation
Link, Banana Links, Upper & Lower Cardan Pins, Side Stay
321156-01-2 Pivot Pin, Upper Pin (Springs), Lock Stay Cardan Pin, Upper
& Lower Lock Link Pins, Lock Link Center Pin, Triangulation
Link Pins, Lock Link/Banana Link Pin, Cuff Pins & Lower
(Springs) Pin - External Surfaces, except where covered by
Dressings, Bush Flanges and Fittings.
A318
OR
A319
POST 26644
OR
A320
POST 26644
OR
A321
Detailed Inspection of Main Landing Gear, Pivot Pins and
321163-02-1 Brake Rod Pins (Bogie) - External Surfaces, except where
covered by Dressings and Bush Flanges.
A320-200
POST 20139
PRE 22129
01March 2017
321105-03-1
321116-02-1
321128-03-1
Page 29
MRBR Task
Number
Description
Detailed Inspection of Main Landing Gear, Brake Rods
321166-01-1 (Bogie) - External Surfaces, except where covered by
Dressings and Bush Flanges.
Satisfied By
Applicability MRBR Task
Number
A320-200
POST 20139
PRE 22129
321128-03-1
Nose Landing Gear
MRBR Task
Number
Description
Satisfied By
Applicability MRBR Task
Number
Detailed Inspection of Nose Landing Gear, Barrel, Sliding
322141-01-1 Tube and Turning Tube - External Surfaces, except where
covered by Dressings and Bush Flanges.
ALL
322105-03-1
Detailed Inspection of Nose Landing Gear, Torque Links 322142-01-1 External Surfaces, except where covered by Dressings and
Bush Flanges.
ALL
Detailed Inspection of Nose Landing Gear, Forestay Upper
322143-01-1 Panel, Lower Link and Universal Joint - External Surfaces,
except where covered by Dressings and Bush Flanges.
ALL
Detailed Inspection of Nose Landing Gear, Lock Link Upper
322144-01-1 and Lock Link Lower - External Surfaces, except where
covered by Dressings and Bush Flanges
ALL
322110-03-1
322105-03-1
322105-03-1
Detailed Inspection of Nose Landing Gear, Upper Barrel
Hinge Pins, Forestay Barrel Pin, Actuating Cylinder Pins,
Retaining Nut Shock Assy, Torque Link Pins, Torque Link
Apex Pin and Nut, Upper Panel to Structure Pins, Upper
322145-01-1
Panel to Universal Joint Pin, Lock Link Center Pin, Lower
Lock Link Pin, Lower Lock Link to Universal Joint Pin and
Cross Pin - External Surfaces, except where covered by
Dressings and Bush Flanges.
ALL
Detailed Inspection of Nose Landing Gear, Actuating
322151-01-1 Cylinder - External Surfaces, except where covered by
Dressings and Bush Flanges.
ALL
01March 2017
322105-03-1
322110-03-1
322152-01-1
Page 30
3. General Requirements
This section contains general requirements and accomplishment instructions to carry out the
Overhaul. These form part of the overhaul standard.
3.1 Preparation and Dispatch to MRO
i.
ii.
iii.
iv.
v.
vi.
vii.
viii.
ix.
The Work Scope shall be agreed between the Operator and the MRO.
The Landing Gear must be supplied with traceable documentation for all parts
identified in the Airbus A320FAM ALS Part 1 and Part 4, and this information should
be made available before the Overhaul commences.
The condition of the Landing Gear should be agreed, between the Operator and the
MRO, to establish damage that may exist prior to receipt of the Landing Gear by the
MRO.
Check all assemblies as listed in the ‘Applicability’ section of this document for
current modification (Service Bulletin) status.
Remove any components from the Landing Gear that are not included in the Work
Scope, referring to the related Airbus AMM for removal Procedure.
Remove the Landing Gear from the aircraft, referring to the Airbus AMM.
If the Landing Gear is not to be delivered assembled, this must be agreed in advance
of receipt of the Landing Gear by the MRO.
Deliver the Landing Gear, in the agreed configuration to the MRO.
Supply the Reporting Forms to the MRO for completion (ref Section 5).
3.2 Receipt at MRO
i.
ii.
Check Life Limited parts for compliance with the Airbus A320FAM ALS: refer to
Airbus A320FAM ALS Part 1 and ALS Part 4.
Check Life Limited parts for compliance with any RAS / Concession life restrictions.
3.3 Disassembly
i.
ii.
iii.
iv.
Disassemble the Landing Gear into its major sub-assemblies: refer to
DISASSEMBLY in the applicable CMM.
Remove all Bushes and interference fit Grease Nipples from subassemblies: refer to
DISASSEMBLY and REPAIR in the applicable CMM.
NOTE: It is recommended that removed Bushes and interference fit Grease Nipples
are discarded.
Remove Electrical Harnesses.
Remove Hydraulic Hoses and Pipe Assemblies.
3.4 Preparation for Examination
i.
ii.
Clean all parts: refer to CLEANING in the applicable CMM.
Remove Protective Treatments as detailed in the applicable CMM if required in the
appropriate inspection process specification.
3.5 Components Subject to Inspection
i.
ii.
Visually examine each part: refer to CHECK in the applicable CMM.
Perform dimensional checks where required: refer to INITIAL MANUFACTURING
LIMIT in FITS AND CLEARANCES in the applicable CMM.
01March 2017
Page 31
iii.
iv.
NOTE: If the component dimensions are not within the tolerances stated in the Initial
Manufacturing Limits in the FITS AND CLEARANCES, and an approved repair or
concession has been applied to the component, refer to that repair or concession for
dimensions.
Springs are to be checked as detailed in CHECK in the applicable CMM.
Perform NDT checks where required: refer to tables in CHECK in the applicable
CMM.
3.6 Repairs
i.
ii.
iii.
iv.
Where required, repair the part: refer to REPAIR in the applicable CMM.
When beyond CMM limits, only approved repairs are to be applied.
If damage is beyond repair the part must be replaced. Dispose of damaged parts in
accordance with approved procedures (para 3.10).
Where applicable, and if not covered by the repair, strip and reapply Protective
Treatments: refer to PROTECTIVE TREATMENTS in REPAIR in the applicable
CMM.
3.7 Restoration of Protective Treatments of Parts Subject to Inspection in Section 2
i.
Protective Treatments (e.g. Chrome Plate, Chromium Oxide, Tungsten Carbide,
Karon, Cadmium Plate, Sermetel or any HVOF applied coatings) can stay in place
unless removal is required in the relevant process specification or the Protective
Treatment is damaged beyond that which is repairable in accordance with the
applicable CMM.
ii.
Reapply Protective Treatments as applicable: refer to PROTECTIVE TREATMENTS
in REPAIR in the applicable CMM.
3.8 Re-assembly
i.
ii.
iii.
iv.
v.
vi.
vii.
viii.
ix.
x.
Install Bushes and new interference fit Grease Nipples at the required build stage:
refer to ASSEMBLY and REPAIR in the applicable CMM.
Paint the part at the required build stage: refer to REPAIR and ASSEMBLY in the
applicable CMM.
Assemble and test at the applicable stage of assembly: refer to ASSEMBLY and
TESTING AND FAULT ISOLATION in the applicable CMM.
Identify all applicable data on new Nameplates where installed.
NOTE: The assembly part number must not change, unless specified by a Service
Bulletin.
Identify all of the serialised parts in the inspection record.
New standard parts prefixed: AN, MS, NAS, NSA and S shall be used during the
assembly process.
All Seals, ‘O’ Rings, Backing Rings, Split Pins and single-use Locking Devices must
be replaced with new parts during the assembly process at Overhaul.
Identification Plates (where removed) and Shims shall be replaced with new parts.
NOTE: When it is necessary to replace the Identification Nameplate, identify the
replacement Nameplate with all the applicable data.
Assemble the Landing Gear Complete and test at the applicable stage of assembly:
refer to ASSEMBLY and TESTING AND FAULT ISOLATION in the applicable CMM.
Fully lubricate all greasing points on the Landing Gear Complete.
01March 2017
Page 32
3.9 Return Conditions to Owner/Operator
i.
ii.
iii.
iv.
3.10
The Landing Gear must be supplied with traceable documentation (Service History)
for all parts identified in the Airbus A320FAM ALS Part 1 and Part 4.
Traceable documentation must be provided to the Owner/Operator for all repairs
done on the Landing Gear.
Deliver the Landing Gear, in the agreed configuration, to the Owner/Operator.
Supply the completed Reporting Forms to the Owner/Operator in accordance with
Section 5.
Permanent Disposal of Scrap Aircraft Parts and Materials
Once agreed by the Owner/Operator, parts are to be disposed of as per the instructions that
follow:
Mutilation of Parts and Materials
Scrap aircraft parts and materials, which will no longer be used, are to be permanently
disposed of. The parts should be mutilated so that they cannot be re-used for their original
intended use. The mutilation should be sufficient to make sure that parts cannot be repaired
or camouflaged to give the appearance of acceptable parts. To effectively mutilate parts or
materials you should:
i.
ii.
iii.
iv.
Remove major lugs or other integral features
Permanently distort the part
Cut large holes into the part
Cut parts into many small pieces.
The list which follows is not considered as effective methods of mutilation:
i.
ii.
iii.
iv.
v.
Stamping or marking the word ‘SCRAP’ on the part
Spraying the part with paint
Hammer marks on the part
Identification tags or marks
Drilling small holes in the parts
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4. Items Not Subject to Overhaul
This section contains the minimum Instructions for Continued Airworthiness of items
identified as Not Subject to Overhaul but require inspection and test to establish that their
serviceability meets airworthiness standards.
4.1 LRUs Not Subject to Overhaul
i.
ii.
Visually examine for indications of damage or corrosion: if necessary repair as
detailed in REPAIR of the applicable CMM.
Do the function and leakage tests to LRUs: refer to TESTING AND FAULT
ISOLATION in the applicable CMM.
4.2 Electrical Harnesses
i.
ii.
iii.
iv.
v.
Clean the Electrical Harnesses: refer to CLEANING in the applicable CMM.
Check the Drain Holes in the Conduit are clear and can drain.
Visually examine the external condition of the Electrical Harness Conduit and
Connectors: refer to CHECK in the applicable CMM.
Test the Electrical Harness: refer to TESTING AND FAULT ISOLATION in the
applicable CMM.
Where required, repair the Electrical Harness: refer to REPAIR in the applicable
CMM.
4.3 Hydraulic Hoses and Pipe Assemblies
i.
ii.
iii.
iv.
v.
Clean all Hydraulic Hoses (flexible) and Pipe Assemblies (rigid) internally and
externally: refer to CLEANING in the applicable CMM.
Visually examine the external condition of the Hydraulic Hoses and Pipe Assemblies:
refer to CHECK in the applicable CMM. Carefully examine the End Fittings for
corrosion or damage to threads.
If the results from the inspections are not satisfactory, replace the Hydraulic Hose or
Pipe Assembly with a new part.
Examine the Identification Labels, Fluid Type Labels, Flow Direction Labels and
Protective Heat Shrink Sleeves to make sure that they are not damaged or split and
that the Labels can be read. If a Label is damaged, split or cannot be read, install a
new Label and Heat Shrink Sleeve.
Install Blanking Caps in the ends of the Hydraulic Hoses and Pipe Assemblies where
they will not be immediately installed.
4.4 Repair
The Owner/Operator may need to include additional instructions within the Overhaul
Work Scope for the repair/replacement of items that are not subject to Overhaul.
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5. Reporting Requirements
Due to the Landing Gear Safe Life Design Concept, Airbus and the Airworthiness Authorities
require Owner/Operators to report any damage or deterioration found during the Overhaul of
the Landing Gear. Damage/deterioration includes corrosion, wear and accidental damage. It
is also required to report details of repair or scrap and reasons for scrap.
This requirement must be included in the Overhaul Work Scope and included in the return
conditions to the Operator as identified in Section 3.9.
Any corrosion findings on structural parts exceeding Level 1 corrosion must be reported. The
Corrosion Level definitions are stated in the Corrosion Prevention & Control Program
(CPCP) rules in the Structure Section of the MPD.
The above information is necessary for Airbus, the Landing Gear Manufacturer and the
Airworthiness Authorities to monitor the continuing airworthiness and performance of the
Landing Gears.
It is also requested that NIL FINDINGS are reported, as this can provide justification for a
future escalation of the Time Between Overhaul (TBO). This will never be possible without
sufficient information, therefore it is in the best interest of Operators to ensure Airbus
receives this information.
To be compliant with the Overhaul requirements stated in this document, completed Landing
Gear Overhaul Reporting Forms must be sent directly to Airbus within 3 months of the
Overhaul completion date, at the following address:
ldg.reporting@airbus.com
The MLG/NLG findings report forms can be downloaded using the following path:
AirbusWorld / Content Library / Maintenance and Engineering / MPD Information /
A320FAM Landing Gear Overhaul Findings Reporting Form (NLG) and A320FAM
Landing Gear Overhaul Findings Reporting Form (MLG).
All reported data will be treated as Confidential Information and will not be disclosed to third
parties. It will be used solely by Airbus and the Vendor to assess the continued validity of
MRBR requirements. Any findings that need to be discussed in Industry Working Groups or
with the MRB Authorities will be presented without stating the operator or MSN unless
expressly authorised in writing to do so by the disclosing party.
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Glossary of Terms
AD
ALS
AMM
CMMv
CMMm
HVOF
ISC
LRU
MLG
MRBR
MRO
NDT
NLG
NWS
RAS
SB
TBO
VSB
01March 2017
Airworthiness Directive
Airworthiness Limitation Section
Aircraft Maintenance Manual
Component Maintenance Manual Vendor
Component Maintenance Manual Manufacturer (Airbus)
High Velocity Oxygen Fuel
Industry Steering Committee
Line Replaceable Unit
Main Landing Gear
Maintenance Review Board Report
Maintenance and Repair Organisation
Non Destructive Test
Nose Landing Gear
Nose Wheel Steering
Repair Approval Sheet
Service Bulletin
Time Between Overhaul
Vendor Service Bulletin
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