DOC AIRBUS | TSM A320FLoss of ADIRU3 Data on the GPSSU2
TASK 34-58-00-810-820-A
Loss of ADIRU3 Data on the GPSSU2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 34-58-00-740-088-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-58-00-810-069-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:33:34 UTC
Loss of ADIRU3 Data on the GPSSU2
1. Possible Causes
2. Job Set-up Information
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 34-58-00-740-001 | BITE Test of the GPS |
| ASM 345801 | |
| AMM 34-58-31-000-001 | Removal of the GPSSU |
| AMM 34-58-31-400-001 | Installation of the GPSSU |
Subtask 34-58-00-740-088-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-58-00-810-069-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message ADIRU3 (1FP3)/GPSSU2 (1SN2):
Subtask 34-58-00-740-089-A ** ON A/C NOT FOR ALL - swap the ADIRU-3 [1FP3] and the ADIRU2 AMM 34-12-34-000-001 and AMM 34-12-34-400-001.
- replace the ADIRU that you installed on side 2.
- swap the
[1SN2] and the GPSSU1 AMM 34-58-31-000-001 and AMM 34-58-31-400-001.
- replace the GPSSU that you installed on side 1.
- remove the ADIRU3
- remove the GPSSU2
- do a check and repair the wiring between the ADIRU3 and the GPSSU2 : pins AB/2J, 3J and A/26, 27 ASM 345801.
B. Do the test given in Para. 3.