DOC AIRBUS | TSM A320FIncorrect Hydraulic Pressure-Switch Status Received by the ELAC2 or FWC at Engine Stop
TASK 27-93-00-810-954-A
Incorrect Hydraulic Pressure-Switch Status Received by the ELAC2 or FWC at Engine Stop
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 27-93-00-710-066-A
[Rev.8 from Aug 2018]
2026.04.04 04:28:08 UTC
Incorrect Hydraulic Pressure-Switch Status Received by the ELAC2 or FWC at Engine Stop
1. Possible Causes
- SYSTEM-PRESS-SW [1151GN]
- SYSTEM-PRESS-SW [2151GN]
- SYSTEM-PRESS-SW [3151GN]
- PRESS SW-G HYD, FLT CTL [10CE2]
- PRESS SW-B HYD, FLT CTL [10CE1]
- PRESS SW-Y HYD, FLT CTL [10CE3]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 27-92-17-000-001 | Removal of the Flight Control Pressure Switch |
| AMM 27-92-17-000-002 | Removal of the Flight Control Pressure Switch |
| AMM 27-92-17-000-003 | Removal of the Flight Control Pressure Switch |
| AMM 27-92-17-400-001 | Installation of the Flight Control Pressure Switch |
| AMM 27-92-17-400-002 | Installation of the Flight Control Pressure Switch |
| AMM 27-92-17-400-003 | Installation of the Flight Control Pressure Switch |
| AMM 29-32-12-000-001 | Removal of the System Pressure Switch |
| AMM 29-32-12-000-002 | Removal of the System Pressure Switch |
| AMM 29-32-12-000-003 | Removal of the System Pressure Switch |
| AMM 29-32-12-400-001 | Installation of the System Pressure Switch |
| AMM 29-32-12-400-002 | Installation of the System Pressure Switch |
| AMM 29-32-12-400-003 | Installation of the System Pressure Switch |
Subtask 27-93-00-710-066-A
A. Test.
(1) Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation(1) Not applicable, you cannot confirm this fault on the ground.
NOTE: On the upper ECAM display unit, the ELAC2 FAULT warning came into view and went out of view after a few seconds during the engine stop phase.
Subtask 27-93-00-810-232-A A. If the fault occurred at the engine stop:
(1) Replace the SYSTEM-PRESS-SW [1151GN] AMM 29-32-12-000-001 and AMM 29-32-12-400-001.
(2) Replace the SYSTEM-PRESS-SW [2151GN] AMM 29-32-12-000-002 and AMM 29-32-12-400-002.
(3) Replace the SYSTEM-PRESS-SW [3151GN] AMM 29-32-12-000-003 and AMM 29-32-12-400-003.
(4) If the fault continues:
(1) Replace the SYSTEM-PRESS-SW [1151GN] AMM 29-32-12-000-001 and AMM 29-32-12-400-001.
(2) Replace the SYSTEM-PRESS-SW [2151GN] AMM 29-32-12-000-002 and AMM 29-32-12-400-002.
(3) Replace the SYSTEM-PRESS-SW [3151GN] AMM 29-32-12-000-003 and AMM 29-32-12-400-003.
(4) If the fault continues:
- replace the PRESS SW-G HYD, FLT CTL [10CE2] AMM 27-92-17-000-001 and AMM 27-92-17-400-001.
- replace the PRESS SW-B HYD, FLT CTL [10CE1] AMM 27-92-17-000-003 and AMM 27-92-17-400-003.
- replace the PRESS SW-Y HYD, FLT CTL [10CE3] AMM 27-92-17-000-002 and AMM 27-92-17-400-002.