Installation of Access Cover 147AZ(148AZ)

TASK 57-17-11-400-001-A
Installation of Access Cover 147AZ(148AZ)

WARNING: MAKE SURE THAT YOU HAVE THE CORRECT FIRE FIGHTING EQUIPMENT AVAILABLE.

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.

WARNING: BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES. IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER. IF NECESSARY, GET MEDICAL HELP. AIRCRAFT FUEL IS POISONOUS.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 147
ZONE: 148

1. Reason for the Job

NOTE: This task is applicable to aircraft without additional center tank.

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	Torque wrench: range to between 0.42 and 0.38 m.daN (37.17 and 33.63 lbf.in )
No specific	Torque wrench: range to between 0.9 and 0.8 m.daN (79.65 and 70.80 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06CDD1)	Silicone Adhesive Sealant-Solvant Resistant One part -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
147	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT
148	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT
147AZ, 148AZ, 734, 744

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	SEAL	AIPC 57-17-05-01-080
2	SEAL	AIPC 57-17-05-03-090
2	SEAL	AIPC 57-17-85-01-120
2	SEAL	AIPC 57-17-85-03-330

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 20-28-00-912-803-A	Bonding Surface Preparation
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 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-10-00-910-001-A	Safety Procedures When You Do Work in a Fuel Tank
TASK 28-21-00-710-008-A	Operational Check of Air Release Valves to Ensure Adequate Fuel Flow Under Suction Feed Conditions
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 28-42-00-740-001-A	Status Report (BITE)
TASK 28-46-00-740-001-A	Functional (BITE) Test
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 71-00-00-710-003-A	Engine Automatic Start
TASK 71-00-00-710-003-B	Engine Automatic Start
TASK 71-00-00-710-004-A	Engine Manual Start
TASK 71-00-00-710-004-B	Engine Manual Start
TASK 71-00-00-710-043-A	Normal Engine Automatic-Start Procedure
TASK 71-00-00-710-047-A	Normal Engine Manual-Start Procedure
TASK 71-00-00-860-822-A	Start the Engine (Normal Manual Start)
TASK 71-00-00-860-823-A	Start the Engine (Normal Automatic Start)
TASK 73-11-06-000-801-A	Removal of the Fuel Filter Element
TASK 73-11-06-400-801-A	Installation of the Fuel Filter Element
TASK 73-11-10-000-002-A	Removal of the Fuel Filter Element
TASK 73-11-10-400-002-A	Installation of the Fuel Filter Element
TASK 73-12-42-000-010-B	Removal of the Fuel Filter Element
TASK 73-12-42-400-010-B	Installation of the Fuel Filter Element
Access Cover 147AZ (148AZ)
Seal of Access Cover 147AZ (148AZ)
Warning Placards on the Center Wing BOX ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 57-17-11-941-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that you obeyed the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001) and (Ref. AMM TASK 28-10-00-910-001).
(2) Make sure that you defueled the center tank and moved the fuel to a different tank (Ref. AMM TASK 28-25-00-650-001) and (Ref. AMM TASK 28-25-00-869-001).
(3) Make sure that the remaining fuel is drained (Ref. AMM TASK 28-25-00-650-003).
(4) Make sure that MLG door 734( 744) is open (Ref. AMM TASK 32-12-00-010-001).
(5) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at zone 147(148).

Subtask 57-17-11-865-051-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FUEL/X FEED/VALVE/MOT1	2QE	A12
** ON A/C NOT FOR ALL
121VU	FUEL/CTR TK/PUMP2 SPLY	30QA	P26
121VU	FUEL/CTR TK/PUMP1 SPLY	29QA	P23
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L24
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23
121VU	FUEL/L WING TK/PUMP2 SPLY	7QA	N26
121VU	FUEL/L WING TK/PUMP1 SPLY	1QA	N23
121VU	FUEL/R WING TK/PUMP2 SPLY	8QA	Q26
121VU	FUEL/R WING TK/PUMP1 SPLY	2QA	Q23

4. Procedure
Subtask 57-17-11-914-051-A ** ON A/C NOT FOR ALL

A. Preparation for Installation

Access Cover 147AZ (148AZ) ** ON A/C NOT FOR ALL

(1) Clean the mating surfaces of the seal and the access cover (1) with the Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(2) Apply the Silicone Adhesive Sealant-Solvant Resistant One part - (Material No.06CDD1) on the new seal (2):
(a) For access panel 147AZ: the new AIPC 57-17-05-03-090 SEAL (2) or the new AIPC 57-17-85-03-330 SEAL (2)
(b) For access panel 148AZ: the new AIPC 57-17-05-01-080 SEAL (2) or the new AIPC 57-17-85-01-120 SEAL (2).
(3) Install the seal (2) on the access cover (1).
(4) Make sure that the seal (2) is correctly installed in its groove and that it has the correct orientation.

Seal of Access Cover 147AZ (148AZ) ** ON A/C NOT FOR ALL

(5) Clean the surface around the seal (2) and remove the unwanted sealant with the Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .

Subtask 57-17-11-210-055-A ** ON A/C NOT FOR ALL

B. Bonding Strip Integrity-Check
(1) Do an inspection of the bonding strips in the center wing box. Make sure that they:

Are correctly installed
Do not have corrosion
Are not damaged.

(2) If necessary, replace the bonding strips (Ref. AMM TASK 20-28-00-912-802).

Subtask 57-17-11-420-050-A ** ON A/C NOT FOR ALL

C. Installation of Access Cover 147AZ(148AZ)

Access Cover 147AZ (148AZ) ** ON A/C NOT FOR ALL

(1) Put the access cover (1) in position on the frame.
(2) Hold the access cover (1) and install the washers (8) and (7) and the screws (6).
(3) TORQUE the screws (6) to between 0.9 and 0.8 m.daN (79.65 and 70.80 lbf.in )

.
(4) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(5) Install the bonding strip (5), the washer (4) and the bolt (3).
(6) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
(7) TORQUE the bolt (3) to between 0.42 and 0.38 m.daN (37.17 and 33.63 lbf.in )

Subtask 57-17-11-420-050-B ** ON A/C NOT FOR ALL

C. Installation of Access Cover 147AZ(148AZ)

Access Cover 147AZ (148AZ) ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT THE WARNING/CAUTION PLACARDS ARE INSTALLED AND YOU CAN EASILY READ THEM. THESE PLACARDS TELL PERSONS THAT THERE IS A POSSIBLE LOW OXYGEN CONTENT IN:

THE AREA BEHIND THE ACCESS PANEL(S)
THE ADJACENT AREAS WHEN THE ACCESS PANEL(S) IS(ARE) OPEN.

IF THE PLACARDS ARE DAMAGED, MISSING OR PAINTED OVER, YOU MUST REPLACE THEM. THESE PLACARDS ARE RELATED TO A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL).

(1) Do a visual inspection to see if placards:

Are damaged
Are missing
Have paint on them.

(2) Make sure that you can easily read the placard message

Warning Placards on the Center Wing BOX ** ON A/C NOT FOR ALL

(3) If placards are damaged, missing, have paint on them or you cannot easily read them, replace them at the next maintenance check.
(4) Hold the access cover (1) and install the washers (8) and (7) and the screws (6).
(5) TORQUE the screws (6) to between 0.9 and 0.8 m.daN (79.65 and 70.80 lbf.in )

.
(6) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(7) Install the bonding strip (5), the washer (4) and the bolt (3).
(8) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
(9) TORQUE the bolt (3) to between 0.42 and 0.38 m.daN (37.17 and 33.63 lbf.in )

Subtask 57-17-11-865-052-A ** ON A/C NOT FOR ALL

D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FUEL/X FEED/VALVE/MOT1	2QE	A12
** ON A/C NOT FOR ALL
121VU	FUEL/CTR TK/PUMP2 SPLY	30QA	P26
121VU	FUEL/CTR TK/PUMP1 SPLY	29QA	P23
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L24
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23
121VU	FUEL/L WING TK/PUMP2 SPLY	7QA	N26
121VU	FUEL/L WING TK/PUMP1 SPLY	1QA	N23
121VU	FUEL/R WING TK/PUMP2 SPLY	8QA	Q26
121VU	FUEL/R WING TK/PUMP1 SPLY	2QA	Q23

Subtask 57-17-11-740-050-A ** ON A/C NOT FOR ALL

E. BITE Test
(1) Do a status report (BITE) of the fuel-quantity indicating system (Ref. AMM TASK 28-42-00-740-001).
(2) Do a functional (BITE) test (Ref. AMM TASK 28-46-00-740-001).

NOTE: These tests are only applicable if you do a maintenance work in the center wing-box area.

Subtask 57-17-11-650-051-A ** ON A/C NOT FOR ALL

F. Fueling
(1) Fill the center tank to the maximum level (Ref. AMM TASK 12-11-28-650-003).

Subtask 57-17-11-210-050-A ** ON A/C NOT FOR ALL

G. Aircraft Maintenance Configuration
(1) If you did a fuel tank repair and there is a risk of remaining unwanted material in the tank, do the steps that follow:
(a) Start the engine and let it operate to flush the contamination from the fuel tank (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004).
(b) If necessary, replace the fuel filter element at scheduled intervals (refer to MPD 730000-C4-1 for scheduled intervals) (Ref. AMM TASK 73-11-10-000-002) and (Ref. AMM TASK 73-11-10-400-002).
(c) For the Extended Range Operations for Two-Engine Aeroplanes (ETOPS) only, do the operational check of the air release valves at scheduled intervals (refer to MPD 282100-03 for scheduled intervals) (Ref. AMM TASK 28-21-00-710-008).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 57-17-11-210-050-B ** ON A/C NOT FOR ALL

G. Aircraft Maintenance Configuration
(1) If you did a fuel tank repair and there is a risk of remaining unwanted material in the tank, do the steps that follow:
(a) Start the engine and let it operate to flush the contamination from the fuel tank (Ref. AMM TASK 71-00-00-710-043) or (Ref. AMM TASK 71-00-00-710-047).
(b) If necessary, replace the fuel filter at scheduled intervals (refer to MPD 731000-I1-1 for scheduled intervals) (Ref. AMM TASK 73-12-42-000-010) and (Ref. AMM TASK 73-12-42-400-010).
(c) For the ETOPS only, do the operational check of the air release valves at scheduled intervals (refer to MPD 282100-03 for scheduled intervals) (Ref. AMM TASK 28-21-00-710-008).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 57-17-11-210-050-E ** ON A/C NOT FOR ALL

NOTE: Airbus recommends to replace the fuel filter element after you do an important work on the tank.

(c) For the ETOPS only, do the operational check of the air release valves at scheduled intervals (refer to MPD 282100-03 for scheduled intervals) (Ref. AMM TASK 28-21-00-710-008).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 57-17-11-210-052-A ** ON A/C NOT FOR ALL

H. Leak Inspection
(1) Do a visual inspection of access cover 147AZ( 148AZ) to make sure that there are no leaks.

5. Close-up
Subtask 57-17-11-410-050-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) Remove the access platform(s).
(3) Close MLG door 734( 744) (Ref. AMM TASK 32-12-00-410-001).

[Rev.10 from 2021] 2026.04.01 02:08:47 UTC