Removal of the Aft Pylon Fairing (APF)
TASK 54-56-00-000-802-A
Removal of the Aft Pylon Fairing (APF)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 54-56-00-941-061-A ** ON A/C NOT FOR ALL
Subtask 54-56-00-020-059-B ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:03:26 UTC
Removal of the Aft Pylon Fairing (APF)
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
CAUTION:
BEFORE YOU INSTALL/REMOVE THE GSE-TOOL, READ THE INSTRUCTIONS IN THE APPLICABLE GSE INSTRUCTION MANUAL. WHILE YOU OPERATE THIS TOOL, CAREFULLY OBEY THEM. IF YOU DO NOT OBEY THE INSTRUCTIONS, DAMAGE TO EQUIPMENT CAN OCCUR.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE |
| 98D54403004000 | 1 | R/I PYLON APF |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 470 | ENGINE 1 AFT PYLON |
| 480 | ENGINE 2 AFT PYLON |
| 473AL, 473AR, 483AL, 483AR | |
| 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 54-54-00-000-805-A | Removal of the Closing Sheet Metal |
| TASK 54-56-11-010-801-A | Opening of the Rear Mount Fairing (RMF) Door |
| 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 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
Subtask 54-56-00-941-061-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 54-56-00-040-061-A ** ON A/C NOT FOR ALL (1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
B. Deactivation of the Thrust Reverser
Subtask 54-56-00-010-056-A ** ON A/C NOT FOR ALL WARNING:
MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.
(1) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-805). C. 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.
(2) 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.
(3) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, in zone 470
(b) For the right pylon, in zone 480.
(4) Open the Rear Mount Fairing (RMF) door (Ref. AMM TASK 54-56-11-010-801):
(a) For the left pylon: 473AL 473AR
(b) For the right pylon: 483AL 483AR.
Subtask 54-56-00-010-057-A ** ON A/C NOT FOR ALL 4. Procedure(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.
(2) 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.
(3) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, in zone 470
(b) For the right pylon, in zone 480.
(4) Open the Rear Mount Fairing (RMF) door (Ref. AMM TASK 54-56-11-010-801):
(a) For the left pylon: 473AL 473AR
(b) For the right pylon: 483AL 483AR.
Subtask 54-56-00-020-059-B ** ON A/C NOT FOR ALL
A. Removal of the Aft Pylon Fairing (APF)
(2) Remove the screws (1).
(3) Remove the nuts (8), the screws (11) and the washers (10) and (9).
(4) Remove the bolts (6) and the washers (7).
(5) Remove the screws (5).
(6) Remove the APF (2) from the pylon.
CAUTION:
WHEN YOU REMOVE THE SCREWS, MAKE SURE THAT YOU RECORD THE CORRECT POSITION OF EACH OF THEM. THE SCREWS HAVE DIFFERENT LENGTHS.
(1) Install the 98D54403004000 R/I PYLON APF (12) in position below the APF (2). (2) Remove the screws (1).
(3) Remove the nuts (8), the screws (11) and the washers (10) and (9).
(4) Remove the bolts (6) and the washers (7).
(5) Remove the screws (5).
(6) Remove the APF (2) from the pylon.
Aft Pylon Fairing