DOC AIRBUS | TSM A320FLoss of the Landing Gear Signal Input
TASK 34-48-00-810-803-A
Loss of the Landing Gear Signal Input
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-48-00-740-054-A ** ON A/C NOT FOR ALL Subtask 34-48-00-740-054-C ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-48-00-810-053-A
[Rev.8 from Aug 2018]
2026.04.04 04:33:14 UTC
Loss of the Landing Gear Signal Input
1. Possible Causes
- GPWC [1WZ]
- LGCIU-1 [5GA1]
wiring of the LANDING GEAR discrete from the GPWC (1WZ) to the LGCIU1 (5GA1)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 32-31-71-000-001 | Removal of the LGCIU |
| AMM 32-31-71-400-001 | Installation of the LGCIU |
| AMM 34-48-00-740-002 | BITE Test of the GPWS |
| ASM 344801 | |
| AMM 34-48-34-000-001 | Removal of the GPWC |
| AMM 34-48-34-400-001 | Installation of the GPWC |
Subtask 34-48-00-740-054-A ** ON A/C NOT FOR ALL Subtask 34-48-00-740-054-C ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 34-48-00-810-053-A
A. If the BITE test gives the maintenance message LGCIU (5GA1)/GPWC (1WZ):
Subtask 34-48-00-740-055-A - replace the GPWC [1WZ] AMM 34-48-34-000-001 and AMM 34-48-34-400-001.
- replace the LGCIU-1 [5GA1] AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
- do a check and repair the
wiring of the LANDING GEAR discrete from the GPWC (1WZ) to the LGCIU1 (5GA1) ASM 344801.
B. Do the test given in Para. 3.