Installation of the Pylon-to-Wing Access Panels

TASK 54-53-11-400-002-A
Installation of the Pylon-to-Wing Access Panels

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.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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
414FR, 423FL, 471AL, 471BL, 471CL, 472AR, 472BR, 475AL, 475BL, 475CL, 476AR, 476BR, 476CR, 477AL, 481AL, 481BL, 482AR, 482BR, 482CR, 485AL, 485BL, 485CL, 486AR, 486BR, 486CR, 487AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
Pylon-to-Wing Access Panels
Seal Position at Installation of the Pylon-to-Wing Access Panels
Electrical Bonding of the Pylon-to-Wing Access Panels

3. Job Set-up
Subtask 54-53-11-869-055-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that a WARNING NOTICE(S) is in position in the cockpit to tell persons not to start engine 1(2).
(2) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position:
(a) For the left pylon, in zone 470
(b) For the right pylon, in zone 480.

Subtask 54-53-11-040-067-A ** ON A/C NOT FOR ALL

B. 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 sure that the thrust reverser is unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 54-53-11-420-054-A ** ON A/C NOT FOR ALL

CAUTION: MAKE SURE THAT THE SEALS OF THE ACCESS PANELS ARE IN THE CORRECT POSITION BELOW THE WING LOWER SURFACE. YOU CAN CAUSE DAMAGE TO THE SEALS IF THEY ARE NOT IN THE CORRECT POSITION.

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

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

Seal Position at Installation of the 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 475AL 475BL 475CL 477AL 414FR 472AR 472BR 476AR 476BR, 476CR
For the right pylon: 482AR 482BR 482CR 486AR 486BR 486CR 487AR 423FL 481AL 481BL 485AL 485BL, 485CL.

(1) Put the pylon-to-wing access panel (1) in position.
(2) Make sure that the applicable seal is correctly installed in the pylon-to-wing access panel groove.
(3) Install the washers (2) and the screws (3) and tighten them.
(4) When you install the screws (3), do the electrical bonding at the applicable location (Ref. AMM TASK 20-28-00-912-802).

Electrical Bonding of the Pylon-to-Wing Access Panels ** ON A/C NOT FOR ALL

NOTE: For the electrical bonding location, refer to the related figure.

5. Close-up
Subtask 54-53-11-440-056-A ** ON A/C NOT FOR ALL

A. Reactivation of the Thrust Reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-081-041).

Subtask 54-53-11-942-055-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:02:28 UTC