Detailed Inspection of Center Wing Box, Rear Spar Aft Face

TASK 57-10-00-200-012-A
Detailed Inspection of Center Wing Box, Rear Spar Aft Face

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: 571122-01
DETAILED INSPECTION OF CENTER WING BOX, REAR SPAR AFT FACE
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	FLASHLIGHT
No specific	AR	PAPER - MASKING

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RDA1)	Adhesive Film Tape-Masking - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12ADB1)	Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard 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 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 511100
SRM 512200
Center Wing Box - Rear Spar - Aft Face

3. Job Set-up
Subtask 57-10-00-010-071-A

A. Get Access
(1) Open the main landing-gear doors (Ref. AMM TASK 32-12-00-010-001).
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 147.
(3) Use a FLASHLIGHT for the inspection.

Subtask 57-10-00-110-050-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 it is not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) If there is a Temporary Protection System (TPS) layer and if it does not let you do a satisfactory inspection, remove the TPS layer (Ref. AMM TASK 51-78-00-916-001).

4. Procedure
Subtask 57-10-00-220-053-A

A. Inspection

Center Wing Box - Rear Spar - Aft Face

(1) Do a detailed inspection of the aft face of the rear spar of the center wing box.
(2) Make sure that there is no:
(a) Corrosion damage:
- If you find corrosion damage, refer to the 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 the Structural Repair Manual SRM 511100 for damage classification and corrective action.

Subtask 57-10-00-916-050-A

B. Application of Temporary Protection System

Center Wing Box - Rear Spar - Aft Face

CAUTION: DO NOT APPLY TEMPORARY PROTECTION ON THE OXYGEN SYSTEMS. MAKE SURE THAT THE TEMPORARY PROTECTION DOES NOT GET:

ON COMPOSITE PARTS, CONTROL CABLES, PULLEYS,TEFLON BEARINGS.
ON LUBRICATED SURFACES.
IN DRAIN VALVES OR OTHER ORIFICES.

TEMPORARY PROTECTION ON OR IN THESE PARTS CAN CAUSE DAMAGE.

CAUTION: DO NOT APPLY TEMPORARY PROTECTION SYSTEM (TPS) TYPE 3 ON THE MOVABLE COMPONENTS. USE ONLY TPS TYPE 1 GRADE 2. IF YOU DO NOT OBEY THIS INSTRUCTION, THE MECHANISMS WILL NOT OPERATE CORRECTLY.

(1) If there is a TPS layer, do a check of the condition of the TPS layer (Ref. AMM TASK 51-78-00-916-001).

NOTE: Airbus recommends that you always apply a new layer of TPS. This is to make sure that the TPS layer continues to give satisfactory corrosion protection. If, after the check, you think that the TPS layer is in the correct condition, you can apply a new layer as a spray on the existing layer.

(2) Apply PAPER - MASKING or Adhesive Film Tape-Masking - - (Material No.05RDA1) on the equipment and fittings adjacent to the area.
(3) If the TPS layer has local damage, remove the damaged TPS layer and apply a new layer of Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film - (Material No.12ADB1) on the inspection area (Ref. AMM TASK 51-78-00-916-001).
(4) If, before the inspection, there was:

Removal of the TPS layer or
Cleaning of the inspection area with high-pressure water, steam, solvents and/or cleaning agents

Apply a full new layer of Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film - (Material No.12ADB1) on the inspection area (Ref. AMM TASK 51-78-00-916-001).
(5) Remove the PAPER - MASKING or the Adhesive Film Tape-Masking - - (Material No.05RDA1) .

5. Close-up
Subtask 57-10-00-410-069-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 main landing-gear doors (Ref. AMM TASK 32-12-00-410-001).

[Rev.10 from 2021] 2026.04.02 06:30:29 UTC