Installation of the Access Panels

TASK 54-52-11-400-002-B
Installation of the Access Panels

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.

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: 410
ZONE: 420
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. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
410	ENG 1 PYLON BOX AND FORWARD FAIRING
420	ENG 2 PYLON BOX AND FORWARD FAIRING
411AT, 411BT, 413AL, 413AR, 413CL, 413CR, 413DT, 421AT, 421BT, 423AL, 423AR, 423CL, 423CR, 423DT, 471AL, 471AR, 481AL
481AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 20-28-00-912-803-A	Bonding Surface Preparation
TASK 54-52-11-000-004-A	Removal of the Seal at Pylon Rib 5
TASK 54-52-12-300-001-A	Replacement of the Cantilever Cover Assemblies
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
Access Panels ** ON A/C NOT FOR ALL
Access Panels ** ON A/C NOT FOR ALL
Access Panels - Clearance Check ** ON A/C NOT FOR ALL
Access Panels - Clearance Check ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 54-52-11-941-061-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) in position to tell persons not to start the 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) in position to tell persons not to energize the FADEC 1(2).

Subtask 54-52-11-040-064-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 the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-481-041).

Subtask 54-52-11-040-064-B ** 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 the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-012).

Subtask 54-52-11-860-058-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position:
(a) For the left pylon, in zones 410
(b) For the right pylon, in zones 420.

Subtask 54-52-11-110-054-A ** ON A/C NOT FOR ALL

D. Preparation for Installation
Make sure that the parts retained from the removed component are clean and in the correct condition.
(1) Clean the parts retained from the removed component with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(2) Do an inspection of the component interface and/or the adjacent area.

Subtask 54-52-11-200-052-A ** ON A/C NOT FOR ALL

E. Inspection of the Seal at Pylon Rib 5
(1) If the seal is damaged, remove it from its support and replace it (Ref. AMM TASK 54-52-11-000-004).

4. Procedure
Subtask 54-52-11-420-058-A ** ON A/C NOT FOR ALL

A. Installation of the Access Panels and the Cantilever Cover Assemblies

Access Panels ** ON A/C NOT FOR ALL

(1) For access panels 413AL, 413CL, 413DT, 413AR, 413CR, 423AL, 423CL, 423DT, 423AR and 423CR:
(a) Install the access panels (1):

For the left pylon 413AL, 413CL, 413DT, 413AR and 413CR
For the right pylon 423AL, 423CL, 423DT, 423AR and 423CR.

(b) Put and hold the access panels (1) in position.
(c) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(d) Install the washers (2) and the screws (3).
(e) Tighten the screws (3).
(f) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
(2) For cantilever cover assemblies 411BT( 421BT) and 411AT( 421AT):
(a) Install cantilever cover assemblies 411BT( 421BT) and 411AT( 421AT) (Ref. AMM TASK 54-52-12-300-001).

Subtask 54-52-11-220-052-A ** ON A/C NOT FOR ALL

B. Check of the Out-of-flush Dimension

Access Panels - Clearance Check ** ON A/C NOT FOR ALL

(1) Make sure that out-of-flush dimension A1 is 0 +1 mm or -1.5 mm (0.0000 +0.0394 in. or -0.0591 in.) is between:

Cantilever assembly 411AT ( 421AT) and access panel 413AL ( 423AL)
Cantilever assembly 411AT ( 421AT) and access panel 413AR ( 423AR)
Access panels 413AL ( 423AL) and 413CL ( 423CL)
Access panels 413AR ( 423AR) and 413CR ( 423CR)
Access panel 423DT and pylon-to-wing access panel 481AL
Access panel 423CL and pylon-to-wing access panel 481AL
Access panel 413CR and pylon-to-wing access panel 471AR.

(2) Make sure that out-of-flush dimension A2 is 0 +1 mm or -1 mm (0.0000 +0.0394 in. or -0.0394 in.) between:

The fixed panel and access panel 413AL ( 423AL)
The fixed panel and access panel 413AR ( 423AR)
Access panels 413DT ( 423DT) and 413CL ( 423CL)
Access panel 413DT and pylon-to-wing access panel 471AL
Access panel 413CL and pylon-to-wing access panel 471AL
Access panel 413CR and pylon-to-wing access panel 471AR
Access panel 413AL ( 423AL) and the forward fairing
Access panel 413AR ( 423AR) and the forward fairing
Access panel 413CL ( 423CL) and the forward fairing
Access panel 413CR ( 423CR) and the forward fairing.

Subtask 54-52-11-220-052-B ** ON A/C NOT FOR ALL

B. Check of the Out-of-flush Dimension

Access Panels - Clearance Check ** ON A/C NOT FOR ALL

(1) Make sure that out-of-flush dimension A1 is 0 +1 mm or -1.5 mm (0.0000 +0.0394 in. or -0.0591 in.) is between:

Cantilever assembly 411BT ( 421BT) and access panel 413AL ( 423AL)
Cantilever assembly 411BT ( 421BT) and access panel 413AR ( 423AR)
Access panels 413AL ( 423AL) and 413CL ( 423CL)
Access panels 413AR ( 423AR) and 413CR ( 423CR)
Access panel 423DT and pylon-to-wing access panel 481AL
Access panel 423CL and pylon-to-wing access panel 481AL
Access panel 413CR and pylon-to-wing access panel 471AR.

(2) Make sure that out-of-flush dimension A2 is 0 +1 mm or -1 mm (0.0000 +0.0394 in. or -0.0394 in.) between:

The fixed panel and access panel 413AL ( 423AL)
The fixed panel and access panel 413AR ( 423AR)
Access panels 413DT ( 423DT) and 413CL ( 423CL)
Access panel 413DT and pylon-to-wing access panel 471AL
Access panel 413CL and pylon-to-wing access panel 471AL
Access panel 423CR and pylon-to-wing access panel 481AR
Access panel 413AL ( 423AL) and the forward fairing
Access panel 413AR ( 423AR) and the forward fairing
Access panel 413CL ( 423CL) and the forward fairing
Access panel 413CR ( 423CR) and the forward fairing.

5. Close-up
Subtask 54-52-11-440-054-A ** ON A/C NOT FOR ALL

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

Subtask 54-52-11-440-054-B ** ON A/C NOT FOR ALL

A. Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-440-012)

Subtask 54-52-11-410-059-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 02:01:56 UTC