Special Detailed Inspection (HFEC) of Center Wing Box, Rear Spar, System Holes Near Man Holes

TASK 57-10-00-220-802-A
Special Detailed Inspection (HFEC) of Center Wing Box, Rear Spar, System Holes Near Man Holes

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.

ZONE: 147
ZONE: 148

1. Reason for the Job
Refer to the MPD TASK: 571101-02
SPECIAL DETAILED INSPECTION (HFEC) OF CENTER WING BOX, REAR SPAR, SYSTEM HOLES NEAR MAN HOLES

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

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 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
147	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT
148	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT
734, 744

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
SRM 512300
SRM 512400
NTM 571101
SRM 511100	(for corrective action)
SRM 512200	(for corrective action)
Inspection (HFEC) of the System Holes Near Man Holes of the Rear Spar of the Center Wing Box

3. Job Set-up
Subtask 57-10-00-010-093-A

A. Get Access
(1) Open the Main Landing Gear (MLG) door 734 ( 744) (Ref. AMM TASK 32-12-00-010-001).
(2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position in zone 147 (148).

Subtask 57-10-00-110-081-A

B. Preparation of the Inspection Area
(1) Remove the sealant and/or paint from the inspection area if this is necessary for the Non-destructive Testing Manual (NTM) task.
(2) Make sure that the surface of the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(3) 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) .
(4) 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 57-10-00-220-064-A

A. Inspection

Inspection (HFEC) of the System Holes Near Man Holes of the Rear Spar of the Center Wing Box

(1) Do a special detailed inspection (HFEC) of the system holes near man holes of the rear spar of the centre wing box. Refer to Non-destructive Testing Manual NTM 571101.
(2) Make a report of the damage after the NDT inspection:
(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 other damage, refer to Structural Repair Manual SRM 511100 for damage classification and corrective action.

Subtask 57-10-00-910-050-A

B. Sealant or Paint Application
(1) Apply sealant ( SRM 512400) or paint ( SRM 512300) on the inspection area, if removed.

5. Close-up
Subtask 57-10-00-410-094-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 (MLG) door 734 ( 744) (Ref. AMM TASK 32-12-00-410-001).

[Rev.10 from 2021] 2026.04.02 06:30:31 UTC