Special Detailed Inspection (Endoscope) of Outer Wing, Dry Bay Area

TASK 57-20-00-220-011-A
Special Detailed Inspection (Endoscope) 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: 521
ZONE: 621

1. Reason for the Job
Refer to the MPD TASK: 572050-02
SPECIAL DETAILED INSPECTION (ENDOSCOPE) OF OUTER WING, DRY BAY AREA

NOTE: This procedure is an alternative to MPD Task 572050-01 (Ref. Task 57-20-00-200-034-A).

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	1	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
521	INBOARD FIXED L.E STRUCTURE
621	INBOARD FIXED L.E STRUCTURE
521AZ, 521BZ, 521EB, 621AZ, 621BZ, 621EB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 57-27-11-000-005-A	Removal of the Access Panel
TASK 57-27-11-400-005-A	Installation of the Access Panel
TASK 57-27-11-400-005-B	Installation of the Access Panel
TASK 57-27-11-400-005-C	Installation of the Access Panel
TASK 57-27-11-400-005-D	Installation of the Access Panel
TASK 57-27-11-400-005-E	Installation of the Access Panel
TASK 57-41-37-000-004-A	Removal of the Pressure Relief Panels
TASK 57-41-37-400-002-A	Installation of the Pressure Relief Panels
SRM 511100
SRM 512200
NTM 572050
Dry Bay Area, RIB5 and RIB6B

3. Job Set-up
Subtask 57-20-00-941-105-A

A. Safety Precautions
(1) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat lever control.
(2) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
(3) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.

Subtask 57-20-00-010-102-A

B. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE below the applicable wing, zone 521(621).
(2) Remove the applicable access panels:
(a) For the left wing, remove:

(b) For the right wing, remove:

4. Procedure
Subtask 57-20-00-110-096-A

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 applicable inspection area.

Subtask 57-20-00-220-059-A

B. Special Detailed Inspection (Endoscope) of Outer Wing, Dry Bay Area
(1) Do a special detailed inspection of the dry bay area between RIB 5 and RIB 6B, NTM 572050 at:

the skin attachments (including cleats)
the spar attachments
the access cutout surrounds
the stringer cutouts.

(2) Make a report of the damage after the NTM inspection:
(a) Corrosion damage:
If you find corrosion, refer to the Structural Repair Manual ( SRM 512200) for the corrosion types, inspection, removal and subsequent 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 the damage types, classification and corrective action.

5. Close-up
Subtask 57-20-00-410-101-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:
(a) For the left wing, install:

(b) For the right wing, install:

Subtask 57-20-00-942-106-A

B. 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) 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