Special Detailed Inspection (US) of Outer Wing, Rear-Spar Forward Face, Between RIB 11 and RIB 27, Including Joint at RIB 22 and Top and Bottom Flanges .......

TASK 57-21-00-280-803-A
Special Detailed Inspection (US) of Outer Wing, Rear-Spar Forward Face, Between RIB 11 and RIB 27, Including Joint at RIB 22 and Top and Bottom Flanges .......

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: 550
ZONE: 560
ZONE: 640
ZONE: 650
ZONE: 660

1. Reason for the Job
Refer to the MPD TASK: 572115-03
SPECIAL DETAILED INSPECTION (US) OF OUTER WING, REAR SPAR FORWARD FACE, BETWEEN RIB 11 AND RIB 27, INCLUDING JOINT AT RIB 22 AND TOP AND BOTTOM FLANGES, REINFORCING ANGLE AT RIB 20 AND JOINT ANGLES BETWEEN RIB 24 AND RIB 25.

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 3M (10 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
550	VENT SURGE TANK
560	DRY BAY (OUTBOARD)
640	FUEL TANK
650	VENT SURGE TANK
660	DRY BAY (OUTBOARD)
540FB, 540GB, 540HB, 540JB, 540KB, 540LB, 540MB, 540NB, 540PB, 540QB, 540RB, 550AB, 550BB, 550CB, 550DB, 560AB, 640FB, 640GB, 640HB, 640JB, 640KB, 640LB, 640MB, 640NB, 640PB, 640QB, 640RB, 650AB, 650BB, 650CB, 650DB, 660AB

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 28-12-45-000-001-A	Removal of the Panel Assembly
TASK 28-12-45-400-002-A	Installation of the Panel Assembly
TASK 28-12-46-000-001-A	Removal of the Overpressure Protector Outlet
TASK 28-12-46-400-001-A	Installation of the Overpressure Protector Outlet
TASK 28-12-47-000-001-A	Removal of the NACA Vent Intake
TASK 28-12-47-400-001-A	Installation of the NACA Vent Intake
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 57-27-11-000-002-A	Removal of the Access Panel
TASK 57-27-11-400-001-A	Installation of the Access Panel
TASK 57-27-11-400-002-A	Installation of the Access Panel
NTM 572115
SRM 572100	(for corrective action)
Details of the Rear Spar Fwd Face - RIBS 11 thru 27

3. Job Set-up
Subtask 57-21-00-941-105-A

A. Safety Precautions

WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.

(1) You must obey the safety procedures when you do work in a fuel tank (Ref. AMM TASK 28-10-00-910-001).
(2) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
(3) Put a 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 57-21-00-650-096-A

B. Fuel Configuration
(1) Defuel the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001).
(2) Drain the remaining fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).

Subtask 57-21-00-010-097-A

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable wing fuel tank, zone 540(640).
(2) Remove the applicable access panels (Ref. AMM TASK 57-27-11-000-001) (Ref. AMM TASK 57-27-11-000-002) (Ref. AMM TASK 28-12-45-000-001) (Ref. AMM TASK 28-12-46-000-001) (Ref. AMM TASK 28-12-47-000-001) and (Ref. AMM TASK 28-10-00-910-002):

For the left wing, remove 540FB 540GB 540HB 540JB 540KB 540LB 540MB 540NB 540PB 540QB 540RB 550AB, 550BB 550CB 550DB 560AB
For the right wing, remove 640FB 640GB 640HB 640JB 640KB 640LB 640MB 640NB 640PB 640QB 640RB 650AB, 650BB 650CB 650DB 660AB.

4. Procedure
Subtask 57-21-00-110-093-A

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

Subtask 57-21-00-280-055-A

B. Special Detailed Inspection (US) of Outer Wing, Rear-Spar Forward Face, Between RIB 11 and RIB 27, Including Joint at RIB 22 and Top and Bottom Flanges, Reinforcing Angle at RIB 20 and Joint Angles between RIB 24 and RIB 25
(1) Examine the applicable inspection area NTM 572115.

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

5. Close-up
Subtask 57-21-00-410-089-A

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 (Ref. AMM TASK 57-27-11-400-001) (Ref. AMM TASK 57-27-11-400-002) (Ref. AMM TASK 28-12-45-400-002) (Ref. AMM TASK 28-12-46-400-001) (Ref. AMM TASK 28-12-47-400-001):

For the left wing, install 540FB 540GB 540HB 540JB 540KB 540LB 540MB 540NB 540PB 540QB 540RB 550AB, 550BB 550CB 550DB 560AB
For the right wing, install 640FB 640GB 640HB 640JB 640KB 640LB 640MB 640NB 640PB 640QB 640RB 650AB, 650BB 650CB 650DB 660AB.

Subtask 57-21-00-650-097-A

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 57-21-00-942-100-A

C. Removal of Equipment
(1) Remove the SAFETY BARRIER(S).
(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) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 02:10:48 UTC