Detailed Inspection of Pylon Spigot Receptacle Upper Surface and Upper Spar Surrounding Structure

TASK 54-51-00-220-805-A
Detailed Inspection of Pylon Spigot Receptacle Upper Surface and Upper Spar Surrounding Structure

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: 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.

CAUTION: DO NOT APPLY TEMPORARY PROTECTION SYSTEM (TPS) ON THE INSPECTION AREA. IF YOU APPLY TPS ON THE INSPECTION AREA, YOU CAN CAUSE DAMAGE TO THE AIRCRAFT.

ZONE: 415
ZONE: 425
ZONE: 470
ZONE: 480
FIN: 4020KM1 ** ON A/C NOT FOR ALL
FIN: 4020KM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Refer to the MPD TASK: 545217-01
DETAILED INSPECTION OF PYLON SPIGOT RECEPTACLE UPPER SURFACE AND UPPER SPAR SURROUNDING STRUCTURE.
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	1	FLASHLIGHT
No specific	1	MIRROR - INSPECTION

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
415	LOWER PYLON
425	LOWER PYLON
470	ENGINE 1 AFT PYLON
480	ENGINE 2 AFT PYLON
471AL, 471BL, 472AR, 472BR, 481AL, 481BL, 482AR, 482BR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 51-78-00-916-001-A	Application of Temporary Protection System (TPS)
TASK 54-53-11-000-804-A	Removal of the Pylon-to-Wing Access Panels and Doors
TASK 54-53-11-400-804-A	Installation of the Pylon-to-Wing Access Panels and Doors
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
SRM 511100	(for corrective action)
SRM 512200	(for corrective action)
Pylon Spigot Receptacle Upper Surface and Upper Spar Surrounding Structure

3. Job Set-up
Subtask 54-51-00-941-107-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 54-51-00-040-103-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 78-30-00-040-805).

Subtask 54-51-00-010-112-A ** ON A/C NOT FOR ALL

C. Removal of the Panels
(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.
(2) Remove the pylon-to-wing access panels and doors (Ref. AMM TASK 54-53-11-000-804):
(a) For the left pylon: 471AL 471BL 472AR 472BR
(b) For the right pylon: 481AL 481BL 482AR 482BR.

Subtask 54-51-00-110-105-A ** ON A/C NOT FOR ALL

D. Preparation of the Inspection Area
(1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(2) If it is not sufficiently clean, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Make sure that there is no Temporary Protection System (TPS) layer and if there is a TPS layer, remove it (Ref. AMM TASK 51-78-00-916-001).
(4) Use a FLASHLIGHT and a MIRROR - INSPECTION, if necessary.

4. Procedure
Subtask 54-51-00-220-098-A ** ON A/C NOT FOR ALL

A. Inspection

Pylon Spigot Receptacle Upper Surface and Upper Spar Surrounding Structure ** ON A/C NOT FOR ALL

(1) Do a detailed inspection of the pylon spigot receptacle upper surface and upper spar surrounding structure.
(2) Make sure that there is no:
(a) Corrosion damage:

If you find corrosion damage, refer to Structural Repair Manual SRM 512200 for types of corrosion, inspection, removal and corrosion protection.

(b) Other damage (scratches, cracks, gouges, dents, creases):

If you find this type of damage, refer to Structural Repair Manual SRM 511100 for damage classification and corrective action.

5. Close-up
Subtask 54-51-00-410-120-A ** ON A/C NOT FOR ALL

A. Installation of the Panels
(1) Install the pylon-to-wing access panels and doors (Ref. AMM TASK 54-53-11-400-804):
(a) For the left pylon: 471AL 471BL 472AR 472BR
(b) For the right pylon: 481AL 481BL 482AR 482BR.

Subtask 54-51-00-440-102-A ** ON A/C NOT FOR ALL

B. Reactivation of the Thrust Reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 54-51-00-942-077-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(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 01:59:55 UTC