General Visual Inspection of Pylon, Reverser Fittings

TASK 54-51-00-210-802-A
General Visual Inspection of Pylon, Reverser Fittings

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: 545228-01
GENERAL VISUAL INSPECTION OF PYLON, REVERSER FITTINGS.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE

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
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451DL, 451EL, 452DR, 452ER
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461DL, 461EL, 462DR, 462ER

D. Referenced Information

REFERENCE	DESIGNATION
TASK 51-78-00-916-001-A	Application of Temporary Protection System (TPS)
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
TASK 78-30-06-000-801-A	Removal of the Thrust Reverser Hinge Access Panels
TASK 78-30-06-400-801-A	Installation of the Thrust Reverser Hinge Access Panels
SRM 511100	(for corrective action)
SRM 512200	(for corrective action)
Reverser Fittings of the Pylon

3. Job Set-up
Subtask 54-51-00-941-098-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 54-51-00-040-093-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 54-51-00-010-097-A ** ON A/C NOT FOR ALL

C. Removal of the Access Panels
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For left pylon in zone 410
(b) For right pylon in zone 420.
(2) Remove the thrust reverser hinge access-panels (Ref. AMM TASK 78-30-06-000-801):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451DL, 451EL, 452DR, 452ER
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461DL, 461EL, 462DR, 462ER.

Subtask 54-51-00-110-094-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. Procedure
Subtask 54-51-00-210-053-A ** ON A/C NOT FOR ALL

A. Inspection

Reverser Fittings of the Pylon ** ON A/C NOT FOR ALL

(1) Do a general visual inspection of the reverser fittings of the pylon.
(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 related corrective action.

5. Close-up
Subtask 54-51-00-410-108-A ** ON A/C NOT FOR ALL

A. Installation of the panels
(1) Install the thrust reverser hinge access-panels (Ref. AMM TASK 78-30-06-400-801):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451DL, 451EL, 452DR, 452ER
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461DL, 461EL, 462DR, 462ER.

Subtask 54-51-00-440-092-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 54-51-00-942-061-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 02:00:03 UTC