Detailed Inspection of Outer Wing, Dry Bay Area

TASK 57-20-00-200-034-A
Detailed Inspection of Outer Wing, Dry Bay Area

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: 540
ZONE: 640

1. Reason for the Job
Refer to the MPD TASK: 572050-01
DETAILED INSPECTION OF OUTER WING, DRY BAY AREA

NOTE: This procedure is an alternative to MPD Task 572050-02 (Ref. Task 57-20-00-220-011).

NOTE: The effectivity of this task is ALL. To know if this task is applicable for 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 5M (16 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
98D27803500001	1	LOCKING TOOL ZERO POS

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
540	FUEL TANK
640	FUEL TANK
540AB, 540BB, 540CZ, 540DZ, 640AB, 640BB, 640CZ, 640DZ

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
TASK 28-10-00-910-001-A	Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A	Access to the Fuel Tanks and the Work Areas
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-650-003-A	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-650-003-A-01	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-869-001-A	Fuel Transfer
TASK 57-27-11-000-001-A	Removal of the Access Panel
TASK 57-27-11-000-007-A	Removal of the Closing Panel
TASK 57-27-11-400-001-A	Installation of the Access Panel
TASK 57-27-11-400-007-A	Installation of the Closing Panel
SRM 572100	(for corrective action)
Dry Bay Area, RIB5 and RIB6B

3. Job Set-up
Subtask 57-20-00-941-106-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

(1) Obey the fuel safety precautions (Ref. AMM TASK 28-10-00-910-001).
(2) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
(3) Put WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
(4) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.

Subtask 57-20-00-860-071-A ** ON A/C NOT FOR ALL

B. Fuel Configuration
(1) Move the fuel to another tank (Ref. AMM TASK 28-25-00-869-001) or defuel the tank (Ref. AMM TASK 28-25-00-650-001) as applicable.
(2) Drain all of the remaining fuel from the tank through the water drain valves (Ref. AMM TASK 28-25-00-650-003).

Subtask 57-20-00-010-103-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position below the zone 540(640).
(2) Remove the applicable access panels:
(a) For the left wing, remove:

(b) For the right wing, remove:

4. Procedure
Subtask 57-20-00-110-094-A ** ON A/C NOT FOR ALL

A. Preparation for Inspection
(1) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) and made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the dry bay area:

the skin attachments and the cleats
the spar attachment
the access cutouts
the stringer cutouts.

Subtask 57-20-00-210-085-A ** ON A/C NOT FOR ALL

B. Detailed Inspection of Outer Wing, Dry Bay Area
(1) Examine the dry bay area, between RIB5 to RIB6B. Make a check of the bottom skin stringers including any drain holes in stringers and the joint brackets.
Make sure that:

there is no corrosion or damage
there are no scratches or scores
there are no loose or damaged fasteners
the surface protection is in the correct condition.

NOTE: If necessary, refer to the SRM 572100 for the correct repair procedure.

5. Close-up
Subtask 57-20-00-410-102-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panels:
(a) For the left wing, install:

540CZ (if removed) and 540DZ (Ref. AMM TASK 57-27-11-400-007)
540AB 540BB (Ref. AMM TASK 57-27-11-400-001).

(b) For the right wing, install:

640CZ (if removed) and 640DZ (Ref. AMM TASK 57-27-11-400-007)
640AB 640BB (Ref. AMM TASK 57-27-11-400-001).

Subtask 57-20-00-860-072-A ** ON A/C NOT FOR ALL

B. Fuel Configuration
(1) Refuel (Ref. AMM TASK 12-11-28-650-003), defuel (Ref. AMM TASK 28-25-00-650-001) or transfer fuel (Ref. AMM TASK 28-25-00-869-001) as necessary.

Subtask 57-20-00-942-107-A ** ON A/C NOT FOR ALL

C. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the access platform(s).
(3) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(4) Remove the WARNING NOTICE(S).
(5) Make sure that the work area is clean and clear of tools and other items.
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:30:38 UTC