DOC AIRBUS | TSM A320FRunaway or Drift of One ADR1 Parameter Identified by the ELACs and the SECs
TASK 34-13-81-810-823-A
Runaway or Drift of One ADR1 Parameter Identified by the ELACs and the SECs
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-13-81-700-055-A
Subtask 34-13-81-810-072-A
[Rev.8 from Aug 2018]
2026.04.04 04:32:35 UTC
Runaway or Drift of One ADR1 Parameter Identified by the ELACs and the SECs
1. Possible Causes
- PROBE-PITOT, 1 [9DA1]
- PROBE-PITOT, 2 [9DA2]
- PROBE-PITOT, 3 [9DA3]
- ADM-L TOTAL PRESSURE [19FP1]
- ADM-R TOTAL PRESSURE [19FP2]
- ADM-STBY TOTAL PRESSURE [19FP3]
- ADM-R STATIC PRESSURE [19FP4]
- ADM-L STATIC PRESSURE [19FP5]
- ADM-R STATIC PRESSURE [19FP6]
- ADM-L STATIC PRESSURE [19FP7]
- ADM-STBY STATIC PRESSURE [19FP8]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 30-31-00-720-001 | Functional Check of the Insulation Resistance of the Pitot Probe Heater |
| AMM 34-10-00-170-001 | Flushing of the Principal Total Pressure Lines |
| AMM 34-10-00-170-003 | Draining and Flushing of Standby Pneumatic Circuits |
| AMM 34-11-15-000-001 | Removal of the Pitot Probe |
| AMM 34-11-15-200-001 | Inspection/Check of the Pitot Probe |
| AMM 34-11-15-400-001 | Installation of the Pitot Probe |
| AMM 34-11-17-000-001 | Removal of the Air Data Module |
| AMM 34-11-17-400-001 | Installation of the Air Data Module |
| AMM 34-13-00-720-010 | Functional Test of the ADM Accuracy |
Subtask 34-13-81-700-055-A
A. Test
Not applicable, you cannot confirm this fault on the ground.
4. Fault IsolationNot applicable, you cannot confirm this fault on the ground.
Subtask 34-13-81-810-072-A
A. Do the procedures that follow:
(1) Do the inspection/check of the pitot probes (9DA1, 9DA2 and 9DA3) AMM 34-11-15-200-001.
(a) If one pitot probe is damaged:
(a) If the test is not OK:
(4) Do the draining and flushing of standby pneumatic circuits AMM 34-10-00-170-003.
(a) If the fault continues after the subsequent flight:
(1) Do the inspection/check of the pitot probes (9DA1, 9DA2 and 9DA3) AMM 34-11-15-200-001.
(a) If one pitot probe is damaged:
- replace the defective pitot probe: PROBE-PITOT, 1 [9DA1] , PROBE-PITOT, 2 [9DA2] or PROBE-PITOT, 3 [9DA3] AMM 34-11-15-000-001 and AMM 34-11-15-400-001.
(a) If the test is not OK:
- replace the defective pitot probe: PROBE-PITOT, 1 [9DA1] , PROBE-PITOT, 2 [9DA2] or PROBE-PITOT, 3 [9DA3] AMM 34-11-15-000-001 and AMM 34-11-15-400-001.
(4) Do the draining and flushing of standby pneumatic circuits AMM 34-10-00-170-003.
(a) If the fault continues after the subsequent flight:
- do the functional test of the ADM accuracy (19FP1 to 19FP8) AMM 34-13-00-720-010.
- replace the defective air data module: ADM-L TOTAL PRESSURE [19FP1] , ADM-R TOTAL PRESSURE [19FP2] , ADM-STBY TOTAL PRESSURE [19FP3] , ADM-R STATIC PRESSURE [19FP4] , ADM-L STATIC PRESSURE [19FP5] , ADM-R STATIC PRESSURE [19FP6] , ADM-L STATIC PRESSURE [19FP7] or ADM-STBY STATIC PRESSURE [19FP8] AMM 34-11-17-000-001 and AMM 34-11-17-400-001.