Special Detailed Inspection (US and HFEC) of Actuator Fitting for MLG Doors at Keel Beam, LH/RH

TASK 53-31-00-220-001-A
Special Detailed Inspection (US and HFEC) of Actuator Fitting for MLG Doors at Keel Beam, LH/RH

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

ZONE: 147
ZONE: 148
ZONE: 734
ZONE: 744

1. Reason for the Job
Refer to the MPD TASK: 533154-03
SPECIAL DETAILED INSPECTION (US AND HFEC) OF ACTUATOR FITTING FOR MLG DOORS AT KEEL BEAM, LH/RH.

NOTE: The effectivity of this task is "ALL". To know if this task is applicable to your aircraft, refer to the MPD task applicability. The information on weight variant groups is given in the MPD and SRM introductions.

2. Job Set-up Information
A. Consumable Materials

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

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
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 32-31-35-000-001-A	Removal of the MLG Door Actuating-Cylinder
TASK 32-31-35-400-001-A	Installation of the MLG Door Actuating-Cylinder
SRM 511100
SRM 512200
SRM 512300
SRM 512400
NTM 533154
NTM 533160
Actuator Fittings of the MLG Door

3. Job Set-up
Subtask 53-31-00-010-069-A

A. Get Access
(1) Open the MLG doors (Ref. AMM TASK 32-12-00-010-001).
(2) Remove the top bolt of the MLG door actuating-cylinder (Ref. AMM TASK 32-31-35-000-001).

NOTE: It is possible to do the inspection with the MLG door actuating-cylinder disconnected at the top or removed.

Subtask 53-31-00-110-121-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 sealant and/or paint from the inspection area if this is necessary for the Non-destructive Testing Manual (NTM) task.

4. Procedure
Subtask 53-31-00-220-052-A

A. Inspection
(1) Do a special detailed inspection of the actuator fittings of the MLG doors at keel beam, left and right sides. Refer to NTM 533154, NTM 533160.
(2) Make a report of the damage after the NTM inspection:
(a) Corrosion damage:
If you find corrosion, refer to the Structural Repair Manual ( SRM 512200) for the corrosion types, inspection, removal and subsequent corrosion protection.
(b) Other damage (scratches, cracks, gouges, dents, creases):
If you find this type of damage, refer to the Structural Repair Manual ( SRM 511100) for damage types, classification and corrective action.

5. Close-up
Subtask 53-31-00-910-051-A

A. Sealant or Paint Application
(1) If the NTM procedure asked to remove the sealant and/or paint from the inspection area, apply sealant ( SRM 512400) or paint ( SRM 512300) on the inspection area.

Subtask 53-31-00-420-053-A

B. Installation of the Components
(1) Install the top bolt of the MLG door actuating-cylinder to connect the MLG door actuating-cylinder to the structure (Ref. AMM TASK 32-31-35-400-001).
(a) If the MLG door actuating-cylinder was removed for access, install it (Ref. AMM TASK 32-31-35-400-001).

Subtask 53-31-00-410-065-A

C. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

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