DOC AIRBUS | AMM A320FGeneral Visual Inspection (GVI) of the Thrust Reverser Lower Bumper 2, Latch 5 and Surrounding Structure (150 mm around Latches) [PW11]
TASK 78-32-00-200-805-A
General Visual Inspection (GVI) of the Thrust Reverser Lower Bumper 2, Latch 5 and Surrounding Structure (150 mm around Latches)
Refer to the MPD TASK: 783220-01
GENERAL VISUAL INSPECTION OF THRUST REVERSER LOWER BUMPER 2, LATCH 5 AND SURROUNDING STRUCTURES (150MM AROUND LATCHES).
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 78-32-00-941-105-A ** ON A/C NOT FOR ALL
Subtask 78-32-00-410-142-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:32:27 UTC
General Visual Inspection (GVI) of the Thrust Reverser Lower Bumper 2, Latch 5 and Surrounding Structure (150 mm around Latches)
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
ZONE: 400
1. Reason for the JobRefer to the MPD TASK: 783220-01
GENERAL VISUAL INSPECTION OF THRUST REVERSER LOWER BUMPER 2, LATCH 5 AND SURROUNDING STRUCTURES (150MM AROUND LATCHES).
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-805-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-32-35-000-801-A | Removal of the Thrust Reverser Latches |
| TASK 78-32-35-400-801-A | Installation of the Thrust Reverser Latches |
| TASK 78-32-41-000-803-A | Removal of the Left Thrust Reverser Thermal Insulation Blankets |
| TASK 78-32-41-400-803-A | Installation of the Left Thrust Reverser Thermal Insulation Blankets |
| TASK 78-32-43-000-805-A | Removal of the Thrust Reverser Bifurcation Latch Receiver |
| TASK 78-32-43-400-805-A | Installation of the Thrust Reverser Bifurcation Latch Receiver |
| TASK 78-32-71-000-802-A | Removal of the Right Thrust Reverser Thermal Insulation Blankets |
| TASK 78-32-71-400-802-A | Installation of the Right Thrust Reverser Thermal Insulation Blankets |
| TASK 78-32-73-000-801-A | Removal of the Thrust Reverser Bifurcation Latch Pin |
| TASK 78-32-73-400-801-A | Installation of the Thrust Reverser Bifurcation Latch Pin |
| TASK 78-32-75-000-802-A | Removal of the Thrust Reverser Keepers |
| TASK 78-32-75-400-802-A | Installation of the Thrust Reverser Keepers |
| TASK 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
| TASK 78-36-00-410-802-A | Closing of the Thrust Reverser Cowl-Doors |
Thrust Reverser Lower Bumper 2 and Latch 5Subtask 78-32-00-941-105-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
Subtask 78-32-00-010-149-A ** ON A/C NOT FOR ALL (1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
Subtask 78-32-00-040-104-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
C. Deactivation of the Thrust Reverser for Ground Maintenance
Subtask 78-32-00-010-150-A ** ON A/C NOT FOR ALL WARNING:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
(1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805). D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
(2) Remove the left and right thrust reverser thermal insulation blankets (Ref. AMM TASK 78-32-41-000-803) and (Ref. AMM TASK 78-32-71-000-802).
4. Procedure(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
(2) Remove the left and right thrust reverser thermal insulation blankets (Ref. AMM TASK 78-32-41-000-803) and (Ref. AMM TASK 78-32-71-000-802).
CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-32-00-210-102-A ** ON A/C NOT FOR ALL A. GVI of the Thrust Reverser Latch 5 and the Surrounding Structure
(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems for disposition.
(2) Find the latch 5 on the left thrust reverser door.
(3) Examine the latch 5 for cracks, gouges, corrosion and broken parts. If you find damage, replace the latch (Ref. AMM TASK 78-32-35-000-801) and (Ref. AMM TASK 78-32-35-400-801) or contact United Technologies Aerospace Systems for disposition.
(4) Examine the bolt, washers and nut on the latch 5 for cracks, gouges, corrosion, loose or missing parts and other damage. If you find damage, replace the damaged or missing part (Ref. AMM TASK 78-32-35-000-801) and (Ref. AMM TASK 78-32-35-400-801).
(5) Examine the area of the structure 5.9 in. (150 mm) from the latch 5. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the Structural Repair Manual (SRM) for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems for disposition.
Subtask 78-32-00-210-103-A ** ON A/C NOT FOR ALL (1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems for disposition.
(2) Find the latch 5 on the left thrust reverser door.
(3) Examine the latch 5 for cracks, gouges, corrosion and broken parts. If you find damage, replace the latch (Ref. AMM TASK 78-32-35-000-801) and (Ref. AMM TASK 78-32-35-400-801) or contact United Technologies Aerospace Systems for disposition.
(4) Examine the bolt, washers and nut on the latch 5 for cracks, gouges, corrosion, loose or missing parts and other damage. If you find damage, replace the damaged or missing part (Ref. AMM TASK 78-32-35-000-801) and (Ref. AMM TASK 78-32-35-400-801).
(5) Examine the area of the structure 5.9 in. (150 mm) from the latch 5. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the Structural Repair Manual (SRM) for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems for disposition.
B. GVI of the Keeper of Latch 5 and the Surrounding Structure
(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems for disposition.
(2) Find the bolts and the hardware used as the keeper on the right thrust reverser door.
(3) Examine the bolt, washers and nut used as the keeper for the latch 5. Look for cracks, gouges, corrosion, loose or missing parts and other damage. If you find damage, replace the damaged or missing parts (Ref. AMM TASK 78-32-75-000-802) and (Ref. AMM TASK 78-32-75-400-802).
(4) Examine the area of the structure 5.9 in. (150 mm) from the latch keeper. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the SRM for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems for disposition.
Subtask 78-32-00-210-104-A ** ON A/C NOT FOR ALL (1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems for disposition.
(2) Find the bolts and the hardware used as the keeper on the right thrust reverser door.
(3) Examine the bolt, washers and nut used as the keeper for the latch 5. Look for cracks, gouges, corrosion, loose or missing parts and other damage. If you find damage, replace the damaged or missing parts (Ref. AMM TASK 78-32-75-000-802) and (Ref. AMM TASK 78-32-75-400-802).
(4) Examine the area of the structure 5.9 in. (150 mm) from the latch keeper. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the SRM for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems for disposition.
C. GVI of the Lower Bumper 2 and the Surrounding Structure on the Left Thrust Reverser Door
(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems for disposition.
(2) Find the bifurcation latch system latch assembly on the left thrust reverser door.
(3) Examine the bifurcation latch system latch handle assemblies. Look for cracks, fractures, gouges, corrosion and broken parts. If you find damage, replace the damaged part (Ref. AMM TASK 78-32-43-000-805) and (Ref. AMM TASK 78-32-43-400-805) or contact United Technologies Aerospace Systems for disposition.
(4) Examine the bifurcation latch system fitting and area of the structure 5.9 in. (150 mm) from the fitting. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the SRM for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems for disposition.
Subtask 78-32-00-210-117-A ** ON A/C NOT FOR ALL (1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems for disposition.
(2) Find the bifurcation latch system latch assembly on the left thrust reverser door.
(3) Examine the bifurcation latch system latch handle assemblies. Look for cracks, fractures, gouges, corrosion and broken parts. If you find damage, replace the damaged part (Ref. AMM TASK 78-32-43-000-805) and (Ref. AMM TASK 78-32-43-400-805) or contact United Technologies Aerospace Systems for disposition.
(4) Examine the bifurcation latch system fitting and area of the structure 5.9 in. (150 mm) from the fitting. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the SRM for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems for disposition.
D. GVI of the Lower Bumper 2 and the Surrounding Structure on the Right Thrust Reverser Door
(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems for disposition.
(2) Find the bifurcation latch system latch pin on the right thrust reverser door.
(3) Examine the bifurcation latch system latch pin. Look for cracks, fractures, gouges, corrosion and broken parts. If you find damage, replace the damaged part (Ref. AMM TASK 78-32-73-000-801) and (Ref. AMM TASK 78-32-73-400-801) or contact United Technologies Aerospace Systems for disposition.
(4) Examine the bifurcation latch system fitting and area of the structure 5.9 in. (150 mm) from the fitting. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the SRM for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems for disposition.
5. Close-up(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems for disposition.
(2) Find the bifurcation latch system latch pin on the right thrust reverser door.
(3) Examine the bifurcation latch system latch pin. Look for cracks, fractures, gouges, corrosion and broken parts. If you find damage, replace the damaged part (Ref. AMM TASK 78-32-73-000-801) and (Ref. AMM TASK 78-32-73-400-801) or contact United Technologies Aerospace Systems for disposition.
(4) Examine the bifurcation latch system fitting and area of the structure 5.9 in. (150 mm) from the fitting. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the SRM for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems for disposition.
Subtask 78-32-00-410-142-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the left and right thrust reverser thermal insulation blankets (Ref. AMM TASK 78-32-41-400-803) and (Ref. AMM TASK 78-32-71-400-802).
(3) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
Subtask 78-32-00-440-098-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the left and right thrust reverser thermal insulation blankets (Ref. AMM TASK 78-32-41-400-803) and (Ref. AMM TASK 78-32-71-400-802).
(3) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-32-00-410-143-A ** ON A/C NOT FOR ALL