DOC AIRBUS | AMM A320FInstallation of the Pack-Inlet Pressure Sensor
TASK 21-51-13-400-001-A
Installation of the Pack-Inlet Pressure Sensor
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 21-51-13-860-050-A ** ON A/C NOT FOR ALL
Subtask 21-51-13-420-050-A ** ON A/C NOT FOR ALL
Subtask 21-51-13-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.05 10:34:31 UTC
Installation of the Pack-Inlet Pressure Sensor
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | Torque wrench: range to between 0.11 and 0.09 m.daN (9.73 and 7.96 lbf.in )  | |
| No specific | Torque wrench: range to between 0.38 and 0.32 m.daN (33.63 and 28.32 lbf.in ) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03FAB1) | Mineral Oil base Grease-- Vaseline or Petrolatum - |
| (Material No.03PBB1) | Lubricant-Anti Seize High Temp. - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [23HB1] (SENSOR-PRESS INLET,PACK 1) | |
| 191KB | |
| FOR [24HB1] (SENSOR-PRESS INLET,PACK 2) | |
| 192KB | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 10 | PACKING-PREFORMED | AIPC 21-51-13-02-010 |
| 5 | WASHER | AIPC 21-51-51-04-090 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-33-21-618-001-A-01 | Pre-conditioning through the HP Ground Connection |
| TASK 12-33-21-618-001-A-02 | Pre-conditioning with the APU |
| TASK 21-51-00-710-002-A | Operational Test of the Flow Control and Indicating System |
| 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 53-35-13-000-002-A | Removal of the Quick-Release Access Panels from the Belly Fairing Structure |
| TASK 53-35-13-400-002-A | Installation of the Quick-Release Access Panels on the Belly Fairing Structure |
Pack-Inlet Pressure SensorSubtask 21-51-13-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) The access panel is removed (Ref. AMM TASK 53-35-13-000-002),
1 FOR [23HB1] (SENSOR-PRESS INLET,PACK 1)
191KB,
2 FOR [24HB1] (SENSOR-PRESS INLET,PACK 2)
192KB.
Subtask 21-51-13-865-051-A ** ON A/C NOT FOR ALL (1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) The access panel is removed (Ref. AMM TASK 53-35-13-000-002),
1 FOR [23HB1] (SENSOR-PRESS INLET,PACK 1)
191KB,
2 FOR [24HB1] (SENSOR-PRESS INLET,PACK 2)
192KB.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 23HB1 (SENSORPRESS INLET,PACK 1) | |||
| 49VU | AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC | 52HH | D08 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/115VAC | 49HH | X22 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/28VDC | 51HH | X21 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN B/115VAC | 50HH | Y18 |
| FOR FIN: 24HB1 (SENSORPRESS INLET,PACK 2) | |||
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/115VAC | 53HH | W22 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/28VDC | 55HH | W21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/28VDC | 56HH | Y21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/115VAC | 54HH | Y20 |
Subtask 21-51-13-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Pressure Sensor
(1) Lubrication of the PACKING
(2) Preparation of the Screws
(3) Put the packing (10) in position on the sensor boss (9).
(4) Make sure that the air-transfer hole in the sensor boss (9) is free from grease and other contamination.
(5) Connect the electrical connector (7)
(6) Put the sensor (8) in position and insert the sensor boss (9) into the sensor mount (11).
(7) Push the sensor (8) in a forward direction until a stop is made between the sensor flange (12) and the sensor mount (11).
(8) Insert the washers (2) and the screws (1).
(9) TORQUE the screws (1) to between 0.38 and 0.32 m.daN (33.63 and 28.32 lbf.in )
(11) TORQUE the screws (6) to between 0.11 and 0.09 m.daN (9.73 and 7.96 lbf.in ).
Subtask 21-51-13-865-052-A ** ON A/C NOT FOR ALL (1) Lubrication of the PACKING
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Apply a small amount of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 21-51-13-02-010 PACKING-PREFORMED (10). (2) Preparation of the Screws
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Apply a small amount of Lubricant-Anti Seize High Temp. - (Material No.03PBB1) to the threads of the screws (1) and (6). (3) Put the packing (10) in position on the sensor boss (9).
(4) Make sure that the air-transfer hole in the sensor boss (9) is free from grease and other contamination.
(5) Connect the electrical connector (7)
(6) Put the sensor (8) in position and insert the sensor boss (9) into the sensor mount (11).
(7) Push the sensor (8) in a forward direction until a stop is made between the sensor flange (12) and the sensor mount (11).
(8) Insert the washers (2) and the screws (1).
(9) TORQUE the screws (1) to between 0.38 and 0.32 m.daN (33.63 and 28.32 lbf.in )
NOTE: Make sure that there is no gap between the sensor flange (12) and the sensor mount (11)
(10) Put the clamp (4) in position and install the new AIPC 21-51-51-04-090 WASHER (5) and the screws (6). (11) TORQUE the screws (6) to between 0.11 and 0.09 m.daN (9.73 and 7.96 lbf.in )
. B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 21-51-13-710-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC | 52HH | D08 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/115VAC | 53HH | W22 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN A/28VDC | 55HH | W21 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/115VAC | 49HH | X22 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN A/28VDC | 51HH | X21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/28VDC | 56HH | Y21 |
| 122VU | AIR COND/TEMP CTL SYS 2/CHAN B/115VAC | 54HH | Y20 |
| 122VU | AIR COND/TEMP CTL SYS 1/CHAN B/115VAC | 50HH | Y18 |
C. Test
(1) Do the pre-conditioning through the HP ground connector (Ref. AMM TASK 12-33-21-618-001) or with the APU (Ref. AMM TASK 12-33-21-618-001).
(2) Do a leak check at the sensor flange (12) and the sensor mount (11).
(4) Do the operational test of the flow control and indicating system (Ref. AMM TASK 21-51-00-710-002).
5. Close-up(1) Do the pre-conditioning through the HP ground connector (Ref. AMM TASK 12-33-21-618-001) or with the APU (Ref. AMM TASK 12-33-21-618-001).
(2) Do a leak check at the sensor flange (12) and the sensor mount (11).
NOTE: Leaks are not permitted.
(3) After approx. 15 minutes stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001) or (Ref. AMM TASK 12-33-21-618-001). (4) Do the operational test of the flow control and indicating system (Ref. AMM TASK 21-51-00-710-002).
Subtask 21-51-13-410-050-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) Install the access panel (Ref. AMM TASK 53-35-13-400-002):
(a) FOR [23HB1] (SENSOR-PRESS INLET,PACK 1)
191KB,
(b) FOR [24HB1] (SENSOR-PRESS INLET,PACK 2)
192KB.
Subtask 21-51-13-862-050-A ** 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 access panel (Ref. AMM TASK 53-35-13-400-002):
(a) FOR [23HB1] (SENSOR-PRESS INLET,PACK 1)
191KB,
(b) FOR [24HB1] (SENSOR-PRESS INLET,PACK 2)
192KB.