DOC AIRBUS | AMM A320FGeneral Visual Inspection of the APU Seals (131-9(A))
TASK 49-13-00-200-802-A
General Visual Inspection of the APU Seals (131-9(A))
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 49-13-00-860-056-A ** ON A/C NOT FOR ALL
Subtask 49-13-00-210-055-A ** ON A/C NOT FOR ALL
Subtask 49-13-00-410-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:27:27 UTC
General Visual Inspection of the APU Seals (131-9(A))
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 5M (16 FT)- ADJUSTABLE |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315AL, 316AR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| 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 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 49-13-00-200-003-A | General Visual Inspection of all APU Compartment Fire Walls and Seals (Compartment Doors, Fwd and Aft Walls, Side Fire Walls, Upper Fire Wall) |
| TASK 49-16-00-200-002-A | Detailed Inspection of APU Air Intake, Diffuser Elbow, Seals and Felt Metal |
| TASK 52-41-00-010-001-A | Open the APU Doors for Access |
| TASK 52-41-00-410-001-A | Close the APU Doors after Access |
APU Seals (131-9(A))Subtask 49-13-00-860-056-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the APU MASTER SW p/bsw on the panel 25VU is set to the OFF position.
(3) Put a WARNING NOTICE(S) in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001)
Subtask 49-13-00-865-056-A ** ON A/C NOT FOR ALL (1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the APU MASTER SW p/bsw on the panel 25VU is set to the OFF position.
(3) Put a WARNING NOTICE(S) in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration
(Ref. AMM TASK 29-00-00-864-001)
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 49-13-00-010-053-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/FIRE/EXTIG/SQUIB/B | 2WF | L39 |
| 121VU | APU/FIRE/EXTIG/SQUIB/A | 1WF | L38 |
| 121VU | APU/FIRE/LP VALVE/NORM | 4WF | M42 |
| 121VU | APU/FIRE/LP VALVE/STBY | 3WF | M41 |
C. Get Access
(1) Make sure that an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position below the APU access doors 315AL and 316AR.
(2) Make sure that the APU access doors 315AL and 316AR are open, safety them in the open position (Ref. AMM TASK 52-41-00-010-001).
(3) Set the light switch 11LJ to the ON position.
4. Procedure(1) Make sure that an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position below the APU access doors 315AL and 316AR.
(2) Make sure that the APU access doors 315AL and 316AR are open, safety them in the open position (Ref. AMM TASK 52-41-00-010-001).
(3) Set the light switch 11LJ to the ON position.
Subtask 49-13-00-210-055-A ** ON A/C NOT FOR ALL
A. General Visual Inspection of the APU seals
(1) Do a check of the APU access doors rubber seal condition and an inspection of the APU compartment door seals (Ref. AMM TASK 49-13-00-200-003)
(a) Make sure that the flexible seals on the air intake system are clean and in correct condition and position (Ref. AMM TASK 49-16-00-200-002).
(b) Make sure that the oil cooler discharge duct aligns with the left APU access door correctly.
5. Close-up(1) Do a check of the APU access doors rubber seal condition and an inspection of the APU compartment door seals (Ref. AMM TASK 49-13-00-200-003)
(a) Make sure that the flexible seals on the air intake system are clean and in correct condition and position (Ref. AMM TASK 49-16-00-200-002).
(b) Make sure that the oil cooler discharge duct aligns with the left APU access door correctly.
Subtask 49-13-00-410-053-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) Set the light switch 11LJ to the OFF position.
(3) Close the APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
Subtask 49-13-00-865-057-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Set the light switch 11LJ to the OFF position.
(3) Close the APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 49-13-00-860-057-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/FIRE/EXTIG/SQUIB/B | 2WF | L39 |
| 121VU | APU/FIRE/EXTIG/SQUIB/A | 1WF | L38 |
| 121VU | APU/FIRE/LP VALVE/NORM | 4WF | M42 |
| 121VU | APU/FIRE/LP VALVE/STBY | 3WF | M41 |
C. Put the aircraft back to its initial configuration.
(1) De-energize the ground service network
(Ref. AMM TASK 24-41-00-862-002).
(2) Remove the WARNING NOTICE(S).
(1) De-energize the ground service network
(Ref. AMM TASK 24-41-00-862-002).
(2) Remove the WARNING NOTICE(S).