Internal Failure of the ADR 1 A320
1. Possible Causes:
-ADIRU-1 (1FP1)
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
| Ref. AMM 34-12-34-000-001 | Removal of the ADIRU |
| Ref. AMM 34-12-34-400-001 | Installation of the ADIRU |
| Ref. AMM 34-13-00-740-003 | System Test of the Air Data Reference (ADR) |
3. Fault Confirmation
SUBTASK 34-13-00-740-050-A
A. Test(s)
(1) Do the system test of the ADR (system 1) Ref. AMM 34-13-00-740-003.
4. Fault Isolation
SUBTASK 34-13-00-810-050-B
A. If the test gives the maintenance message ADIRU1 (1FP1):
— Replace ADIRU-1 (1FP1), Ref. AMM 34-12-34-000-001 and Ref. AMM 34-12-34-400-001.
