DOC AIRBUS | AMM A320FLeak Test of the Center Tank
TASK 28-11-00-790-003-A
Leak Test of the Center Tank
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 28-11-00-941-080-A ** ON A/C NOT FOR ALL
Subtask 28-11-00-790-055-A
Subtask 28-11-00-410-056-A
[Rev.10 from 2021]
2026.04.02 06:17:00 UTC
Leak Test of the Center Tank
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 3M (10 FT) |
| No specific | AR | BRUSH - BRISTLED, SOFT |
| No specific | AR | CONTAINER 1 L (1/4 USGAL) |
| No specific | AR | GROUND AIR-SUPPLY UNIT(LOW PRESSURE) |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 97A28002117002 | 1 | TOOL-PURGING |
| 98D27803500001 | 1 | LOCKING TOOL ZERO POS |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.14CDB1) | Testing Medium-Fuel Leak Detection White Powder - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 131NW, 131PW, 132PW, 521AB, 621AB |
| 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 28-11-00-790-002-A | Leak Test with Fuel of the Wing-Tank Outer and Inner Cells |
| TASK 28-11-00-790-008-A | Leak Test with Fuel of the Wing Tank |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 28-25-00-869-001-A | Fuel Transfer |
| 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 57-41-37-000-004-A | Removal of the Pressure Relief Panels |
| TASK 57-41-37-400-002-A | Installation of the Pressure Relief Panels |
Subtask 28-11-00-941-080-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(2) If you want to test the RIB1 you must do the Leak Test with Fuel of the Wing-Tank Outer and Inner Cells (Ref. AMM TASK 28-11-00-790-002).
(3) Put WARNING NOTICE(S) in position to tell persons not to operate the flight controls and the MLG doors.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the flap/slat control lever.
(5) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
Subtask 28-11-00-650-105-A ** ON A/C NOT FOR ALL Subtask 28-11-00-941-080-C ** ON A/C NOT FOR ALL WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
(1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001). (2) If you want to test the RIB1 you must do the Leak Test with Fuel of the Wing-Tank Outer and Inner Cells (Ref. AMM TASK 28-11-00-790-002).
(3) Put WARNING NOTICE(S) in position to tell persons not to operate the flight controls and the MLG doors.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the flap/slat control lever.
(5) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
C. Safety Precautions
(2) If you want to test the RIB1 you must do the Leak Test with Fuel of the Wing Tank (Ref. AMM TASK 28-11-00-790-008).
(3) Put WARNING NOTICE(S) in position to tell persons not to operate the flight controls and the MLG doors.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the flap/slat control lever.
(5) Put the SAFETY BARRIER(S) in position.
Subtask 28-11-00-650-105-C ** ON A/C NOT FOR ALL Subtask 28-11-00-865-075-A WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
(1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001). (2) If you want to test the RIB1 you must do the Leak Test with Fuel of the Wing Tank (Ref. AMM TASK 28-11-00-790-008).
(3) Put WARNING NOTICE(S) in position to tell persons not to operate the flight controls and the MLG doors.
(4) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the flap/slat control lever.
(5) Put the SAFETY BARRIER(S) in position.
E. Open, safety and tag this(these) circuit breaker(s):
Subtask 28-11-00-010-058-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 |
F. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT) in position:
(4) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable main gear door actuator.
(5) For access to the front of the center tank remove the access panels 132PW 131NW 131PW.
Subtask 28-11-00-680-050-A (1) Put the ACCESS PLATFORM 3M (10 FT) in position:
- on the left wing, below zones 541
- on the right wing, below zones 641.
- on the left wing remove 521AB (Ref. AMM TASK 57-41-37-000-004)
- on the right wing remove 621AB (Ref. AMM TASK 57-41-37-000-004).
(4) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable main gear door actuator.
(5) For access to the front of the center tank remove the access panels 132PW 131NW 131PW.
G. Drain the Fuel
(1) Drain all remaining fuel from the leak monitor 500QM with the 97A28002117002 TOOL-PURGING and a CONTAINER 1 L (1/4 USGAL).
4. Procedure(1) Drain all remaining fuel from the leak monitor 500QM with the 97A28002117002 TOOL-PURGING and a CONTAINER 1 L (1/4 USGAL).
Subtask 28-11-00-790-055-A
A. Visual Inspection
(1) Look for signs of fuel leakage in these areas:
(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.
5. Close-up(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.
- examine the leak monitor 500QM with the 97A28002117002 TOOL-PURGING to see if there is a leak.
WARNING:
WHEN YOU USE COMPRESSED AIR:
- USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
- DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS.
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 28-11-00-410-056-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panels 132PW 131NW 131PW.
(3) Install the leading-edge access panels 521AB 621AB (Ref. AMM TASK 57-41-37-400-002).
(4) Remove the access platform(s).
(5) Close the main gear doors (Ref. AMM TASK 32-12-00-410-001).
Subtask 28-11-00-865-076-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panels 132PW 131NW 131PW.
(3) Install the leading-edge access panels 521AB 621AB (Ref. AMM TASK 57-41-37-400-002).
(4) Remove the access platform(s).
(5) Close the main gear doors (Ref. AMM TASK 32-12-00-410-001).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-11-00-650-079-A ** ON A/C NOT FOR ALL | 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. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 28-25-00-650-001) (Ref. AMM TASK 12-11-28-650-003) (Ref. AMM TASK 28-25-00-869-001) .
Subtask 28-11-00-942-068-A (1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 28-25-00-650-001) (Ref. AMM TASK 12-11-28-650-003) (Ref. AMM TASK 28-25-00-869-001) .
D. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the safety barriers.
(2) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.