Detailed Visual Inspection of the Outer Wing Bottom Skin Lower Surface at Fuel Tank Water Drain Holes between RIBS 15-16 and 22-23

TASK 57-41-00-200-005-A
Detailed Visual Inspection of the Outer Wing Bottom Skin Lower Surface at Fuel Tank Water Drain Holes between RIBS 15-16 and 22-23

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

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.

ZONE: 540
ZONE: 640

1. Reason for the Job
Refer to the MPD TASK: 572164-01
DETAILED INSPECTION OF OUTER WING, BOTTOM SKIN LOWER SURFACE AT FUEL TANK WATER DRAIN HOLES BETWEEN RIB 15-16 AND RIB 22-23.

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 4M (13 FT)-ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 28-00-00-910-001-A	Fuel Safety Procedures
SRM 572100	(for corrective action)
Fuel Tank Water Drain Holes in the Outer Wing Bottom Skin

3. Job Set-up
Subtask 57-41-00-941-055-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

(1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
(2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(3) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
(4) Put WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
(5) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable holes in the wing bottom skin, zone 540/640.

Subtask 57-41-00-865-058-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

4. Procedure
Subtask 57-41-00-110-059-A ** ON A/C NOT FOR ALL

A. Preparation for Inspection
(1) Use a Textile-Lint free Cotton - (Material No.14SBA1) , made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) to clean the wing bottom skin around the fuel tank water drain holes.

Subtask 57-41-00-210-054-A ** ON A/C NOT FOR ALL

B. Inspection

Fuel Tank Water Drain Holes in the Outer Wing Bottom Skin ** ON A/C NOT FOR ALL

(1) Examine the fuel tank water drain holes in the wing bottom skin between RIBS 15-16 and 22-23.
Make sure that:

there is no damage
the edges are not corroded
the surface finish of the edges is in good condition
there are no signs of fuel leakages.

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

5. Close-up
Subtask 57-41-00-865-059-A ** ON A/C NOT FOR ALL

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 57-41-00-942-054-A ** ON A/C NOT FOR ALL

B. Removal of Equipment
(1) Remove the access platform(s).
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:30:57 UTC