Removal of the Overwing Panel Protection

TASK 57-51-42-000-001-A
Removal of the Overwing Panel Protection

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.

CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:

DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
Overwing Protection Panel - Location and Detail

3. Job Set-up
Subtask 57-51-42-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Make sure that the ground safety locks are on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:

make sure that the landing-gear control lever is in the DOWN position
put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.

Subtask 57-51-42-865-050-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34

Subtask 57-51-42-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position adjacent to the applicable MLG, below the zone 730 or 740.
(2) Open the applicable MLG door (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuator.

4. Procedure
Subtask 57-51-42-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Overwing Panel Protection

CAUTION: MAKE SURE THAT ALL MANIFOLDS, PIPES AND HOSES ARE SUFFICIENTLY SUPPORTED WHEN YOU REMOVE OR INSTALL PANELS. IF MANIFOLDS, PIPES AND HOSES ARE NOT SUFFICIENTLY SUPPORTED, LEAKS CAN OCCUR.

(1) Remove the bolts (2) from the pipe clamp (3).
(2) Hold the panel (1) and remove the twenty four bolts (4).
(3) Disconnect one end of the bonding lead (5).
(4) Remove the panel (1).
(5) Remove the nuts (29), the washers (28), the screws (27) and the cable clips (26) from the panel (6).
(6) Remove the nut (30), the washers (31), the screw (33) and the cable clip (32) from the panel (6).
(7) Remove the bolts (7) from the pipe clamp (8).
(8) Remove the three bolts (9) from the manifold (10).
(9) Remove the bolt (11) from the manifold (10) and disconnect the bonding lead (12).
(10) Hold the panel (6) and remove the twenty three bolts (13).
(11) Disconnect and remove the bonding lead (5).
(12) Remove the nut (25), the washer (24) and the screw (19). Disconnect the bonding lead (18) from the panel (6).
(13) Remove the nut (14), the washer (15) and the screw (17). Disconnect the lanyard (16) from the panel (6).
(14) Remove the nut (22), the washer (23) and the screw (20) Disconnect the lanyard (21) from the panel (6).
(15) Remove the panel (6).

[Rev.10 from 2021] 2026.04.02 06:31:16 UTC