Leak Test with Fuel of the Wing-Tank Outer-Cell

TASK 28-11-00-790-001-A
Leak Test with Fuel of the Wing-Tank Outer-Cell

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.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	BRUSH - BRISTLED, SOFT
No specific	AR	GROUND AIR-SUPPLY UNIT(LOW PRESSURE)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14CDB1)	Testing Medium-Fuel Leak Detection White Powder -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
522KB, 522LB, 522NB, 522QB, 540JB, 550AB, 575DB, 575EB, 575FB, 575GB, 575HB, 622KB, 622LB, 622NB, 622QB, 640JB, 650AB, 675DB, 675EB, 675FB, 675GB, 675HB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
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 27-60-00-866-002-A	Extension-Retraction of the Spoilers for Maintenance
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 28-12-47-000-001-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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 57-27-11-000-002-A	Removal of the Access Panel
TASK 57-27-11-400-002-A	Installation of the Access Panel
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
TASK 57-51-37-400-004-A	Installation of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
Intercell-Transfer-Valve Actuators - Location and Detail

3. Job Set-up
Subtask 28-11-00-941-078-A ** ON A/C NOT FOR ALL

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 fuel safety procedures when you do work in a fuel tank (Ref. AMM TASK 28-10-00-910-001).
(2) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flight controls.
(3) Put the SAFETY BARRIER(S) in position.

Subtask 28-11-00-860-059-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration

Intercell-Transfer-Valve Actuators - Location and Detail ** ON A/C NOT FOR ALL

(1) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
(2) On the ECAM control panel, push in the FUEL pushbutton switch (P/BSW).
(3) Refuel the outer cell to full (Ref. AMM TASK 12-11-28-650-003).
(4) Get access to the intercell transfer valve actuators:
(a) Put an ACCESS PLATFORM 3M (10 FT) below the applicable access panels:

for the left wing, below the access panels 522KB and 575DB

for the right wing, below the access panels 622KB and 675DB.

(b) Remove the applicable access panels:

522KB(622KB)
575DB(675DB) (Ref. AMM TASK 57-51-37-000-004).

(5) On the intercell transfer valve actuator, make sure that the valve position indicator shows valve closed.
(6) Remove the electrical connector (1) from the intercell-transfer-valve actuator (2)
(7) Defuel or transfer fuel from the applicable wing tank inner cell (Ref. AMM TASK 28-25-00-650-001).

NOTE: This will leave the outer cell full.

(8) On the intercell transfer valve actuator, make sure that the valve position indicator shows valve closed.
(9) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(10) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(11) Drain any fuel that remains from the wing-tank inner-cell and the vent surge tank (Ref. AMM TASK 28-25-00-650-003).
(12) The wing-tank outer-cell must be full of fuel for a minimum of 30 minutes before the test.

Subtask 28-11-00-010-068-A ** ON A/C NOT FOR ALL

C. Get Access

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Extend the flaps fully (Ref. AMM TASK 27-50-00-866-008).
(2) Extend the No. 3, 4 and 5 spoilers fully (Ref. AMM TASK 27-60-00-866-002).
(3) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE below the applicable zone 575(675).
(4) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE below the applicable zone 522(622).
(5) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE below the applicable access panel 540JB(640JB).
(6) Put an ACCESS PLATFORM 3M (10 FT) below the applicable access panel 550AB(650AB).
(7) Remove the applicable access panels (Ref. AMM TASK 28-12-47-000-001), (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-10-00-910-002):

on the left wing 550AB 540JB
on the right wing 650AB 640JB.

(8) Remove the applicable leading edge access panel:

on the left wing 522KB 522LB 522NB 522QB
on the right wing 622KB 622LB 622NB 622QB.

(9) Remove the applicable trailing edge access panel (Ref. AMM TASK 57-51-37-000-004):

on the left wing 575EB 575FB 575GB 575HB
on the right wing 675EB 675FB 675GB 675HB.

4. Procedure
Subtask 28-11-00-790-062-A ** ON A/C NOT FOR ALL

A. Visual Inspection
(1) Look for signs of fuel leakage in these areas:

tank seals and sealant
structure, brackets and clamps
fuel pipelines, couplings, bonded items, brackets and clamps.

(2) Talcum Powder Procedure

WARNING: WHEN YOU USE COMPRESSED AIR:

USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS.

LOOSE PARTICLES AND/OR HIGH PRESSURE AIR CAN CAUSE INJURY.

CAUTION: USE THE TALCUM POWDER PROCEDURE ONLY ON THE EXTERNAL SURFACES OF THE FUEL TANKS.

(a) Dry the area of the possible leak with a Textile-Lint free Cotton - (Material No.14SBA1) .
(b) Dry the area fully with a GROUND AIR-SUPPLY UNIT(LOW PRESSURE).
(c) Apply Testing Medium-Fuel Leak Detection White Powder - (Material No.14CDB1) to the area with a BRUSH - BRISTLED, SOFT.
(d) Monitor the area for a change in color of the talcum powder. This will show the location of a fuel leak and the rate of the leakage.

Subtask 28-11-00-860-073-A ** ON A/C NOT FOR ALL

B. Preparation for Test

Intercell-Transfer-Valve Actuators - Location and Detail ** ON A/C NOT FOR ALL

(1) Connect the electrical connector (1) to the related intercell-transfer-valve actuator (2).
(2) Install the applicable access panels (Ref. AMM TASK 28-12-47-400-001) and (Ref. AMM TASK 57-27-11-400-002):

on the left wing 550AB 540JB
on the right wing 650AB 640JB.

5. Close-up
Subtask 28-11-00-860-060-A ** ON A/C NOT FOR ALL

A. Aircraft Configuration

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Fully retract the flaps (Ref. AMM TASK 27-50-00-866-009).
(2) Retract the No. 3, 4 and 5 spoilers (Ref. AMM TASK 27-60-00-866-002).
(3) On the spoiler servo-control, make sure that the pointer on the hex. head is opposite the letter 'O' on the housing.

Subtask 28-11-00-410-066-A ** 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 the applicable leading edge access panels:

on the left wing install 522KB 522LB 522NB 522QB
on the right wing install 622KB 622LB 622NB 622QB.

(3) Install the applicable trailing edge access panels (Ref. AMM TASK 57-51-37-400-004):

on the left wing install 575DB 575EB 575FB 575GB 575HB
on the right wing install 675DB 675EB 675FB 675GB 675HB.

Subtask 28-11-00-650-108-A ** ON A/C NOT FOR ALL

C. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).

Subtask 28-11-00-942-085-A ** ON A/C NOT FOR ALL

D. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 07:01:48 UTC