DOC AIRBUS | AMM A320FLeak Test of the Wing Tanks and Vent Surge Tank (without Fuel) by the Local Blowing Procedure
TASK 28-11-00-790-005-A
Leak Test of the Wing Tanks and Vent Surge Tank (without Fuel) by the Local Blowing Procedure
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 28-11-00-941-082-A
Subtask 28-11-00-790-057-A
Subtask 28-11-00-410-060-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:17:00 UTC
Leak Test of the Wing Tanks and Vent Surge Tank (without Fuel) by the Local Blowing Procedure
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
1. Reason for the Job- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 4M (13 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 | SAFETY CLIP - CIRCUIT BREAKER |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.14CCB6) | Testing Medium-Leak Detection - Oxygen System |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-11-28-650-003-A | Pressure Refuel with Automatic Control |
| 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 28-25-00-650-001-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 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 |
Subtask 28-11-00-941-082-A
A. Safety Precautions
(2) Put a warning notice in the cockpit to tell persons not to operate the flight controls.
(3) Put the SAFETY BARRIER(S) in position.
Subtask 28-11-00-650-111-A 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 in the cockpit to tell persons not to operate the flight controls.
(3) Put the SAFETY BARRIER(S) in position.
B. Fuel Configuration
(1) Defuel the applicable fuel tanks (Ref. AMM TASK 28-25-00-650-001).
(2) Drain the remaining fuel from the applicable fuel and vent surge tank (Ref. AMM TASK 28-25-00-650-003).
Subtask 28-11-00-860-065-A (1) Defuel the applicable fuel tanks (Ref. AMM TASK 28-25-00-650-001).
(2) Drain the remaining fuel from the applicable fuel and vent surge tank (Ref. AMM TASK 28-25-00-650-003).
C. Aircraft Maintenance Configuration
(1) Extend the flaps fully (Ref. AMM TASK 27-50-00-866-008).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the slat/flap control lever.
(3) Extend the spoilers (Ref. AMM TASK 27-60-00-866-002).
(4) Make sure that the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER is on the spoiler servo-controls.
Subtask 28-11-00-865-079-A (1) Extend the flaps fully (Ref. AMM TASK 27-50-00-866-008).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the slat/flap control lever.
(3) Extend the spoilers (Ref. AMM TASK 27-60-00-866-002).
(4) Make sure that the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER is on the spoiler servo-controls.
D. Open, safety and tag this(these) circuit breaker(s):
Subtask 28-11-00-010-062-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** 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 ALL | |||
| 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 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/L&R XFR/CTL & IND | 2QL | R26 |
| 121VU | FUEL/CTR TK/L&R XFR/CTL & IND | 1QL | R25 |
| ** ON A/C ALL | |||
| 123VU | L WING TK/PUMP 1/STBY SPLY | 11QA | AD12 |
| 123VU | R WING TK/PUMP 1/STBY SPLY | 12QA | AE12 |
E. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable access panel.
(2) Remove the applicable wing leading-edge access panels, to get access to the front of the fuel tanks.
(3) Remove the applicable wing trailing edge access panels, to get access to the rear of the fuel tanks.
(4) Remove the applicable fuel tank access panels (Ref. AMM TASK 57-27-11-000-001), (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-10-00-910-002).
4. Procedure(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable access panel.
(2) Remove the applicable wing leading-edge access panels, to get access to the front of the fuel tanks.
(3) Remove the applicable wing trailing edge access panels, to get access to the rear of the fuel tanks.
(4) Remove the applicable fuel tank access panels (Ref. AMM TASK 57-27-11-000-001), (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-10-00-910-002).
Subtask 28-11-00-790-057-A
A. Leak Test
(1) Use a BRUSH - BRISTLED, SOFT to apply Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to the internal surfaces of the fuel tank.
(2) Compressed air procedure.
(3) Where there are bubbles in the tank, mark the location of the leak.
5. Close-up(1) Use a BRUSH - BRISTLED, SOFT to apply Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) to the internal surfaces of the fuel tank.
(2) Compressed air procedure.
WARNING:
WHEN YOU USE COMPRESSED AIR:
(a) Point a GROUND AIR-SUPPLY UNIT(LOW PRESSURE) at the leak area from outside of the tank. - USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
- DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS.
(3) Where there are bubbles in the tank, mark the location of the leak.
Subtask 28-11-00-410-060-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) Install the applicable fuel tank access panels (Ref. AMM TASK 57-27-11-400-001) and (Ref. AMM TASK 57-27-11-400-002).
(3) Install the applicable wing leading-edge access panels.
(4) Install the applicable wing trailing-edge access panels.
Subtask 28-11-00-410-060-B ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable fuel tank access panels (Ref. AMM TASK 57-27-11-400-001) and (Ref. AMM TASK 57-27-11-400-002).
(3) Install the applicable wing leading-edge access panels.
(4) Install the applicable wing trailing-edge access panels.
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable fuel tank access panels (Ref. AMM TASK 57-27-11-400-001) and (Ref. AMM TASK 57-27-11-400-002).
(3) Install the applicable wing leading-edge access panels.
(4) Install the applicable wing trailing-edge access panels.
Subtask 28-11-00-865-080-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable fuel tank access panels (Ref. AMM TASK 57-27-11-400-001) and (Ref. AMM TASK 57-27-11-400-002).
(3) Install the applicable wing leading-edge access panels.
(4) Install the applicable wing trailing-edge access panels.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-11-00-860-064-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** 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 ALL | |||
| 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 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/L&R XFR/CTL & IND | 2QL | R26 |
| 121VU | FUEL/CTR TK/L&R XFR/CTL & IND | 1QL | R25 |
| ** ON A/C ALL | |||
| 123VU | L WING TK/PUMP 1/STBY SPLY | 11QA | AD12 |
| 123VU | R WING TK/PUMP 1/STBY SPLY | 12QA | AE12 |
C. Aircraft 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).
(2) Retract the 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.
(4) Fully retract the flaps (Ref. AMM TASK 27-50-00-866-009).
Subtask 28-11-00-942-074-A (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).
(2) Retract the 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.
(4) Fully retract the flaps (Ref. AMM TASK 27-50-00-866-009).
D. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the access platform(s).
(4) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(5) Remove the WARNING NOTICE(S).
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the access platform(s).
(4) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(5) Remove the WARNING NOTICE(S).
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.