DOC AIRBUS | TSM A320FLoss of the ADR 1 BUS 1 Output
TASK 34-13-81-810-850-A
Loss of the ADR 1 BUS 1 Output
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-13-81-740-121-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-13-81-810-102-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:32:36 UTC
Loss of the ADR 1 BUS 1 Output
1. Possible Causes
- ADIRU-1 [1FP1]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 34-12-34-000-001 | Removal of the ADIRU |
| AMM 34-12-34-400-001 | Installation of the ADIRU |
| AMM 34-13-00-740-003 | SYSTEM TEST of the ADR |
Subtask 34-13-81-740-121-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-13-81-810-102-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message ADIRU1 (1FP1) ADR BUS 1:
Subtask 34-13-81-740-122-A ** ON A/C NOT FOR ALL - replace the ADIRU-1 [1FP1] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.
B. Do the test given in Para. 3.