DOC AIRBUS | AMM A320FRemoval of the Total Pressure Tube (131-9(A))
TASK 49-51-17-000-004-A
Removal of the Total Pressure Tube (131-9(A))
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 49-51-17-860-056-A ** ON A/C NOT FOR ALL
Subtask 49-51-17-020-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:30:59 UTC
Removal of the Total Pressure Tube (131-9(A))
WARNING:
DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | AR | PLUG - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315AL, 316AR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 52-41-00-010-001-A | Open the APU Doors for Access |
Total Pressure Tube (131-9(A))Subtask 49-51-17-860-056-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3) Put a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
Subtask 49-51-17-865-056-A ** ON A/C NOT FOR ALL (1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3) Put a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 49-51-17-010-055-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/ECB/SPLY | 1KD | L41 |
C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the LIGHT control SW 11LJ to the ON position.
4. Procedure(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the LIGHT control SW 11LJ to the ON position.
Subtask 49-51-17-020-053-A ** ON A/C NOT FOR ALL
A. Removal of the Total Pressure Tube
(1) Remove the bolt (4) and disconnect the tube retainer (3) from the differential pressure transducer (1).
(2) Remove the bolt (8) and disconnect the tube retainer (6) from the probe total pressure (9).
(3) Remove the tube (5) from the APU.
(4) Remove and discard the packings (2) and (7) from both sides of the tube (5).
(5) Put the PLUG-BLANKING in each disconnected line end.
(1) Remove the bolt (4) and disconnect the tube retainer (3) from the differential pressure transducer (1).
(2) Remove the bolt (8) and disconnect the tube retainer (6) from the probe total pressure (9).
(3) Remove the tube (5) from the APU.
(4) Remove and discard the packings (2) and (7) from both sides of the tube (5).
(5) Put the PLUG-BLANKING in each disconnected line end.