Special Detailed Inspection (US) of Pylon Spigot Receptacle, Mating Face with Rear Upper Spar

TASK 54-51-00-270-802-A
Special Detailed Inspection (US) of Pylon Spigot Receptacle, Mating Face with Rear Upper Spar

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: 410
ZONE: 420
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: 545217-02
SPECIAL DETAILED INSPECTION (US) OF PYLON SPIGOT RECEPTACLE, MATING FACE WITH REAR UPPER SPAR.
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
410	ENG 1 PYLON BOX AND FORWARD FAIRING
420	ENG 2 PYLON BOX AND FORWARD FAIRING
415BL, 425BL

D. Referenced Information

REFERENCE	DESIGNATION
TASK 51-78-00-916-001-A	Application of Temporary Protection System (TPS)
TASK 54-51-21-000-802-A	Removal of the Pylon Lateral Access-Doors
TASK 54-51-21-400-802-A	Installation of the Pylon Lateral Access-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
NTM 545217
SRM 511100	(for corrective action)
SRM 512200	(for corrective action)
Inspection (US) of the Pylon Spigot Receptacle, the Mating Face with the Rear Upper Spar

3. Job Set-up
Subtask 54-51-00-941-115-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 54-51-00-040-112-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 54-51-00-010-122-A ** ON A/C NOT FOR ALL

C. Removal of the Access Doors
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, in zone 410
(b) For the right pylon, in zone 420.
(2) Remove the pylon lateral access-doors (Ref. AMM TASK 54-51-21-000-802):
(a) For the left pylon: 415BL
(b) For the right pylon: 425BL.

Subtask 54-51-00-110-113-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.
(5) Do a visual check of the inspection area for damage or discontinuities.
(6) 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.

4. Procedure
Subtask 54-51-00-270-054-A ** ON A/C NOT FOR ALL

A. Inspection

Inspection (US) of the Pylon Spigot Receptacle, the Mating Face with the Rear Upper Spar ** ON A/C NOT FOR ALL

(1) Do a special detailed inspection (US) of the pylon spigot receptacle, the mating face with the rear upper spar. Refer to Non-destructive Testing Manual NTM 545217.
(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 54-51-00-410-131-A ** ON A/C NOT FOR ALL

A. Installation of the Access Doors
(1) Install the pylon lateral access-doors (Ref. AMM TASK 54-51-21-400-802):
(a) For the left pylon: 415BL
(b) For the right pylon: 425BL.

Subtask 54-51-00-440-111-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 54-51-00-942-087-A ** ON A/C NOT FOR ALL

C. 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 02:00:07 UTC