DOC AIRBUS | TSM A320FIncorrect Reception of ADIRU1 VMO-MMO Data by the FMGC1 and FMGC2
TASK 34-13-00-810-944-A
Incorrect Reception of ADIRU1 VMO-MMO Data by the FMGC1 and FMGC2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 34-13-00-740-257-A 4. Fault Isolation
Subtask 34-13-00-810-197-A
[Rev.8 from Aug 2018]
2026.04.04 04:32:30 UTC
Incorrect Reception of ADIRU1 VMO-MMO Data by the FMGC1 and FMGC2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AIPC 341108 | |
| AMM 34-12-34-000-001 | Removal of the ADIRU |
| AMM 34-12-34-400-001 | Installation of the ADIRU |
| AMM 34-13-00-740-002 | INTERFACE TEST of the ADR |
| ASM 341302 |
Subtask 34-13-00-740-257-A 4. Fault Isolation
Subtask 34-13-00-810-197-A
A. If the test gives the maintenance message WRG:VMO-MMO DISCRETE/ ADIRU1 (1FP1):
Subtask 34-13-00-740-258-A - remove the ADIRU1 AMM 34-12-34-000-001
- do a check and repair the
wiring of the ADIRU1 VMO/MMO discrete input from the ADIRU1 to the L/G down VMO/MMO selection switch (22FP) - install the ADIRU1 ASM 341302 and AMM 34-12-34-400-001.
- replace the ADIRU-1 [1FP1] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.
- replace the SW-L/G DOWN VMO/MMO SELECTION [22FP] AIPC 341108.
B. Do the test given in Para. 3.