General Visual Inspection of Flap Tab Hinge and Fairing No. 3C (EWIS)

TASK 05-25-30-200-012-A
General Visual Inspection of Flap Tab Hinge and Fairing No. 3C (EWIS)

WARNING: DO NOT EXTEND THE SLATS AND FLAPS WHEN THE THRUST REVERSER COWLS ARE DEPLOYED. IF YOU DO NOT OBEY THIS WARNING, YOU CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO THE COMPONENTS.

WARNING: MAKE SURE THAT THE SAFETY DEVICES AND THE WARNING NOTICES ARE IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

ZONE: 539
ZONE: 639

1. Reason for the Job
Refer to the MPD TASK: ZL-539-01
GENERAL VISUAL INSPECTION OF FLAP TAB HINGE AND FAIRING NO. 3C (EWIS)

NOTE: This is an EWIS (Electrical Wiring Interconnection System) procedure. EWIS is defined in ESPM 20-33-11.

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)
No specific	AR	WARNING NOTICE(S)
98L12003001000	AR	HARNESS,SAFETY

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
539	FLAP TAB HINGE 3C
639	FLAP TAB HINGE 3C
539AB, 539CB, 639AB, 639CB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 27-50-00-866-008-A	Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01	Extension of the Flaps/Slats on the Ground
TASK 27-50-00-866-009-A	Retraction of the Flaps on the Ground
TASK 27-50-00-866-009-A-01	Retraction of the Flaps/Slats on the Ground
TASK 57-55-11-000-005-A	Removal of the Inboard and Outboard-Flap Tab Hinge-Fairings
TASK 57-55-11-400-005-A	Installation of the Inboard and Outboard-Flap Tab Hinge-Fairings
Flap Tab Hinge and Fairing No. 3C

3. Job Set-up
Subtask 05-25-30-010-061-B ** ON A/C NOT FOR ALL

A. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT) in position

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

(2) Put on and attach the HARNESS, SAFETY before you start work in the work area.
(3) Remove access panels 539AB, 539CB, 639AB and 639CB (Ref. AMM TASK 57-55-11-000-005).

Subtask 05-25-30-866-076-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Fully extend the flaps (Ref. AMM TASK 27-50-00-866-008).

Subtask 05-25-30-941-073-A ** ON A/C NOT FOR ALL

C. Safety Precautions
(1) Put the WARNING NOTICE(S) in the cockpit to tell persons not to operate the flight controls.

4. Procedure
Subtask 05-25-30-210-061-A ** ON A/C NOT FOR ALL

A. Inspection

Flap Tab Hinge and Fairing No. 3C ** ON A/C NOT FOR ALL

(1) Do a general visual inspection of flap tab hinge and fairing no. 3C.
(2) Make sure that there are no signs of corrosion, cracks or damage on all the parts of the components and the structure that you can see.
(3) Make sure that all the installations (wiring) are correctly attached.

5. Close-up
Subtask 05-25-30-866-084-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Fully retract the flaps (Ref. AMM TASK 27-50-00-866-009).

Subtask 05-25-30-410-061-B ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panels 539AB, 539CB, 639AB and 639CB (Ref. AMM TASK 57-55-11-400-005).
(3) Remove the access platform(s).

Subtask 05-25-30-942-067-A ** ON A/C NOT FOR ALL

C. Put the Aircraft back to its Initial Configuration

(1) Remove the WARNING NOTICE(S).
(2) Remove all the fixtures, tools, test and support equipment used during this procedure.

[Rev.10 from 2021] 2026.03.31 22:50:23 UTC