General Visual Inspection of Main Landing Gear Bay including Main Landing Gear Door Hinges

TASK 53-31-00-210-023-A
General Visual Inspection of Main Landing Gear Bay including Main Landing Gear Door Hinges

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 147
ZONE: 148

1. Reason for the Job
Refer to the MPD TASK: 533136-01
GENERAL VISUAL INSPECTION OF MLG BAY, INCLUDING MLG DOOR HINGES
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	1	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12ABB1)	Corrosion Preventive Compound-Water Displacing Hard Film -
(Material No.12ABC1)	Corrosion Preventive Compound_Water Displacing Soft Film -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
147	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT
148	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT

D. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 51-78-00-916-001-A	Application of Temporary Protection System (TPS)
SRM 53311600	(for corrective action)
SRM 53312900	(for corrective action)
SRM 53351100	(for corrective action)
SRM 53361100	(for corrective action)
Area of Inspection in the MLG Bay

3. Job Set-up
Subtask 53-31-00-010-070-A

A. Get Access:
(1) Open the MLG doors (Ref. AMM TASK 32-12-00-010-001).
(2) Depressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-00-00-864-001).
(3) Put the WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
(4) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the main landing-gear bay.

Subtask 53-31-00-110-108-A

B. 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 not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Remove the TPS layer, if it does not let you do a satisfactory inspection (Ref. AMM TASK 51-78-00-916-001).

4. Procedure
Subtask 53-31-00-210-071-A

A. General Visual Inspection
(1) Do a general visual inspection of the MLG bay including the MLG door hinges for corrosion and other damage.
(2) If necessary, refer to the ASRM:

SRM 53311600,
SRM 53312900,
SRM 53351100,
SRM 53361100
for the correct repair procedures.

Subtask 53-31-00-916-074-A

B. Check and Application of the TPS layer
(1) If the TPS was removed at the "Preparation of the Inspection Area", apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) or Corrosion Preventive Compound-Water Displacing Hard Film - (Material No.12ABB1) (Ref. AMM TASK 51-78-00-916-001).
(2) If the TPS was not removed at the "Preparation of the Inspection Area", do a check of the condition and integrity of the TPS layer (Ref. AMM TASK 51-78-00-916-001).
(3) If the TPS layer has local damage, remove the damaged TPS layer and apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) or Corrosion Preventive Compound-Water Displacing Hard Film - (Material No.12ABB1) (Ref. AMM TASK 51-78-00-916-001).

5. Close-up
Subtask 53-31-00-410-068-A

A. 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) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(4) Remove the WARNING NOTICE(S).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:29:05 UTC