Removal of the Pylon-to-Wing Access Panels

TASK 54-53-11-000-002-B
Removal of the Pylon-to-Wing Access Panels

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

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.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

ZONE: 470
ZONE: 480
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self 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
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
470	ENGINE 1 AFT PYLON
480	ENGINE 2 AFT PYLON
471AL, 471AR, 471BL, 471BR, 471CL, 471CR, 471DL, 475AL, 475AR, 475BL, 475BR, 477AL, 481AL, 481AR, 481BL, 481BR, 481CL, 481CR, 481DR, 485AL, 485AR, 485BL, 485BR, 487AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
Pylon-to-Wing Access Panels ** ON A/C NOT FOR ALL
Pylon-to-Wing Access Panels ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 54-53-11-941-057-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine 1(2).
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).

Subtask 54-53-11-010-058-A ** ON A/C NOT FOR ALL

B. Get Access
(1) 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.

Subtask 54-53-11-040-058-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser

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 78-30-00-481-041).

Subtask 54-53-11-040-058-B ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser

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 78-30-00-040-012).

4. Procedure
Subtask 54-53-11-020-055-A ** ON A/C NOT FOR ALL

A. Removal of the Pylon-to-Wing Access Panels

Pylon-to-Wing Access Panels ** ON A/C NOT FOR ALL

NOTE: The procedure is the same for all the panels:

For the left pylon: 471AL 471BL 471CL 471DL 475AL 475BL 477AL 471AR 471BR 471CR 475AR 475BR
For the right pylon: 481AR 481BR 481CR 481DR 485AR 485BR 487AR 481AL 481BL 481CL 485AL 485BL.

(1) Remove the screws (3) and the washers (2).
(2) Remove the pylon-to-wing access panel (1).

[Rev.10 from 2021] 2026.04.01 02:02:27 UTC