DOC AIRBUS | TSM A320FLoss of the ADR 2 BUS 4 Output Identified by the IR 3
TASK 34-13-00-810-888-A
Loss of the ADR 2 BUS 4 Output Identified by the IR 3
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-13-00-740-152-A 4. Fault Isolation
Subtask 34-13-00-810-137-B
[Rev.8 from Aug 2018]
2026.04.04 04:32:27 UTC
Loss of the ADR 2 BUS 4 Output Identified by the IR 3
1. Possible Causes
- ADIRU-2 [1FP2]
wiring of the ADR OUTPUT BUS 4 bus from the ADIRU 2 (1FP2) to the first terminal block
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 |
| ASM 341301 | |
| AMM 34-14-00-740-001 | Interface Test of the IR |
Subtask 34-13-00-740-152-A 4. Fault Isolation
Subtask 34-13-00-810-137-B
A. If the test gives the maintenance message ADIRU2 (1FP2)/ADIRU3 (1FP3):
Subtask 34-13-00-740-181-A - replace the ADIRU-2 [1FP2] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.
- do a check and repair the
wiring of the ADR OUTPUT BUS 4 bus from the ADIRU 2 (1FP2) to the first terminal block ASM 341301.
B. Do the test given in Para. 3.