General Visual Inspection of Wing Fuel Tank (EWIS)

TASK 05-25-40-200-005-A
General Visual Inspection of Wing Fuel Tank (EWIS)

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.

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

ZONE: 540
ZONE: 640

1. Reason for the Job
Refer to the MPD TASK: ZL-540-01
GENERAL VISUAL INSPECTION OF WING FUEL TANK (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 2M (6 FT)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
98D57004013000	1	HOOK-COVER (RIB 2 SURGE DOORS)
98D57004014000	1	HOOK-COVER (RIB2-SURGE DOORS)
98L12003001000	AR	HARNESS,SAFETY

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
540	FUEL TANK
640	FUEL TANK
540AB, 540AZ, 540BZ, 640AB, 640AZ, 640BZ
540JB, 540KB, 640JB, 640KB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
TASK 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-25-00-650-001-A	Pressure Defuel
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
Wing Fuel Tank

3. Job Set-up
Subtask 05-25-40-941-055-A

A. Safety Precautions
(1) You must obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
(2) Put the SAFETY BARRIER(S) in position.
(3) Put the WARNING NOTICE(S) in position:

To tell persons not to operate the fuel system
To tell persons not to refuel the aircraft
To tell persons not to operate the flight controls.

Subtask 05-25-40-860-052-A

B. Aircraft Maintenance Configuration
(1) Defuel the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001).

Subtask 05-25-40-010-054-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 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 the access panels:
(a) For the left wing:

(b) For the right wing:

(4) To get access to the inboard of RIB2:
(a) For the left wing:

Open surge doors 540AZ and 540BZ and install the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and/or the 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS).

(b) For the right wing:

Open surge doors 640AZ and 640BZ and install the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and/or the 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS).

Subtask 05-25-40-010-054-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 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 540AB and 640AB (Ref. AMM TASK 57-27-11-000-001).
(4) To get access to the inboard of RIB2:
(a) For the left wing:

Open surge doors 540AZ and 540BZ and install the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and/or the 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS).

(b) For the right wing:

Open surge doors 640AZ and 640BZ and install the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and/or the 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS).

Subtask 05-25-40-010-054-C ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 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 the access panels:
(a) For the left wing:

(b) For the right wing:

(4) Remove RIB2 access panels 540AZ, 540BZ, 640AZ and 640BZ (Ref. AMM D/O 57-27-12-00).

Subtask 05-25-40-010-054-D ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 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 540AB and 640AB (Ref. AMM TASK 57-27-11-000-001).
(4) Remove RIB2 access panels 540AZ, 540BZ, 640AZ and 640BZ (Ref. AMM D/O 57-27-12-00).

4. Procedure
Subtask 05-25-40-210-054-A

A. Inspection

Wing Fuel Tank

(1) Do a general visual inspection of the wing fuel tank (zones 540 and 640).
(2) Make sure that:

There is no damage (corrosion, leaks or cracks) on all the parts of the components and the structure that you can see.
All the installations (wiring, bonding leads and piping) are correctly attached.

5. Close-up
Subtask 05-25-40-410-054-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) Close the surge doors:
(a) For the left wing:

Remove the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and/or 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS) and close surge doors 540AZ and 540BZ.

(b) For the right wing:

Remove the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and/or 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS) and close surge doors 640AZ and 640BZ.

(3) Install the access panels:
(a) For the left wing:

(b) For the right wing:

Subtask 05-25-40-410-054-B ** 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) Close the surge doors:
(a) For the left wing:

Remove the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and/or 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS) and close surge doors 540AZ and 540BZ.

(b) For the right wing:

Remove the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and/or 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS) and close surge doors 640AZ and 640BZ.

(3) Install access panels 540AB and 640AB (Ref. AMM TASK 57-27-11-400-001).

Subtask 05-25-40-410-054-C ** 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 RIB2 access panels 540AZ, 540BZ, 640AZ and 640BZ (Ref. AMM D/O 57-27-12-40).
(3) Install the access panels:
(a) For the left wing:

(b) For the right wing:

Subtask 05-25-40-410-054-D ** ON A/C NOT FOR ALL

Subtask 05-25-40-860-053-A

B. Aircraft Maintenance Configuration
(1) Refuel the applicable fuel tank (Ref. AMM TASK 12-11-28-650-003).

Subtask 05-25-40-942-055-A

C. Removal of Equipment
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(3) Remove the SAFETY BARRIERS.
(4) Remove all the fixtures, tools, test and support equipment used during this procedure.

[Rev.10 from 2021] 2026.03.31 22:50:24 UTC