DOC AIRBUS | AMM A320FGeneral Visual Inspection (GVI) of the Thrust Reverser Latch Beams, Latches 1A/1B, Latches 2, 3 and 4 and Surrounding Structure (150 mm around Latches) [PW11]
TASK 78-32-00-200-804-A
General Visual Inspection (GVI) of the Thrust Reverser Latch Beams, Latches 1A/1B, Latches 2, 3 and 4 and Surrounding Structure (150 mm around Latches)
Refer to the MPD TASK: 783219-01
GENERAL VISUAL INSPECTION OF THRUST REVERSER LATCH BEAMS, LATCH1A/1B, LATCH 2 TO 4 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 78-32-00-941-100-A ** ON A/C NOT FOR ALL
Subtask 78-32-00-410-134-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:32:26 UTC
General Visual Inspection (GVI) of the Thrust Reverser Latch Beams, Latches 1A/1B, Latches 2, 3 and 4 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.
1. Reason for the JobRefer to the MPD TASK: 783219-01
GENERAL VISUAL INSPECTION OF THRUST REVERSER LATCH BEAMS, LATCH1A/1B, LATCH 2 TO 4 AND SURROUNDING STRUCTURES (150MM AROUND LATCHES).
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 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 78-32-75-000-802-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 Latches and BeamSubtask 78-32-00-941-100-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 78-32-00-010-139-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 78-32-00-040-098-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 78-32-00-010-140-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
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
CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-32-00-210-099-A ** ON A/C NOT FOR ALL A. GVI of the Thrust Reverser Latches and 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 (UTAS) for disposition.
(2) Find the latches on the bottom of the left thrust reverser door.
(3) Examine the latches 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 UTAS for disposition.
(4) Examine the inner failsafe pin, outer failsafe pin, bolts, washers, retention cap and nuts on the latches for loose, missing or damaged parts. If you find damage, replace the damaged or missing parts (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. (149.86 mm) from the latches. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to Structural Repair Manual for allowable damage limits and repair procedures or contact UTAS for disposition.
Subtask 78-32-00-210-100-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 (UTAS) for disposition.
(2) Find the latches on the bottom of the left thrust reverser door.
(3) Examine the latches 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 UTAS for disposition.
(4) Examine the inner failsafe pin, outer failsafe pin, bolts, washers, retention cap and nuts on the latches for loose, missing or damaged parts. If you find damage, replace the damaged or missing parts (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. (149.86 mm) from the latches. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to Structural Repair Manual for allowable damage limits and repair procedures or contact UTAS for disposition.
B. GVI of the Latch Keepers and 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 UTAS for disposition.
(2) Find the bolts and the hardware used as keepers on the bottom of the right thrust reverser door.
(3) Examine the inner failsafe pin, outer failsafe pin, washer, retention cap, washer and nut used as the keeper for latches 1A and 1B. Look for cracks, gouges, corrosion and broken parts. If you find damage, replace the damaged part (Ref. AMM TASK 78-32-75-000-802) and (Ref. AMM TASK 78-32-75-400-802).
(4) Examine the bolts, washers, and nuts used as the keepers for the latches. Look for loose, missing or damaged parts. If you find damage, replace the damaged or missing part (Ref. AMM TASK 78-32-75-000-802) and (Ref. AMM TASK 78-32-75-400-802).
(5) Examine the area of the structure 5.9 in. (149.86 mm) from the latch keeper. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the Structural Repair Manual for allowable damage limits and repair procedures or contact UTAS for disposition.
Subtask 78-32-00-210-101-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 UTAS for disposition.
(2) Find the bolts and the hardware used as keepers on the bottom of the right thrust reverser door.
(3) Examine the inner failsafe pin, outer failsafe pin, washer, retention cap, washer and nut used as the keeper for latches 1A and 1B. Look for cracks, gouges, corrosion and broken parts. If you find damage, replace the damaged part (Ref. AMM TASK 78-32-75-000-802) and (Ref. AMM TASK 78-32-75-400-802).
(4) Examine the bolts, washers, and nuts used as the keepers for the latches. Look for loose, missing or damaged parts. If you find damage, replace the damaged or missing part (Ref. AMM TASK 78-32-75-000-802) and (Ref. AMM TASK 78-32-75-400-802).
(5) Examine the area of the structure 5.9 in. (149.86 mm) from the latch keeper. Look for gouges, nicks, scratches and deterioration of protection. If you find damage, refer to the Structural Repair Manual for allowable damage limits and repair procedures or contact UTAS for disposition.
C. GVI of the Latch Beam on the Left and Right Thrust Reverser Halves
(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 UTAS for disposition.
(2) Examine the latch beam on the left and right thrust reversers halves. Look for cracks, fractures, gouges, corrosion and other damage. If you find damage, replace the Structural Repair Manual for allowable damage limits and repair procedures or contact UTAS 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 UTAS for disposition.
(2) Examine the latch beam on the left and right thrust reversers halves. Look for cracks, fractures, gouges, corrosion and other damage. If you find damage, replace the Structural Repair Manual for allowable damage limits and repair procedures or contact UTAS for disposition.
Subtask 78-32-00-410-134-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) 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 78-32-00-440-092-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) 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 78-32-00-410-135-A ** ON A/C NOT FOR ALL