DOC AIRBUS | TSM A320FLoss of the Interface between the Weather Radar Transceiver 2 and the Radio Altimeter Transceiver 2
TASK 34-42-00-810-838-A
Loss of the Interface between the Weather Radar Transceiver 2 and the Radio Altimeter Transceiver 2
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-42-00-740-108-A 4. Fault Isolation
Subtask 34-42-00-810-091-A
[Rev.8 from Aug 2018]
2026.04.04 04:33:10 UTC
Loss of the Interface between the Weather Radar Transceiver 2 and the Radio Altimeter Transceiver 2
1. Possible Causes
- XCVR-RA, 2 [2SA2]
[1SQ2] - wiring from the radio altimeter transceiver 2 to the weather radar transceiver 2
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 34-41-00-740-002 | BITE Test of the Weather Radar |
| ASM 344102 | |
| AMM 34-41-33-000-004 | Removal of the Weather Radar Transceiver |
| AMM 34-41-33-400-003 | Installation of the Weather Radar Transceiver |
| AMM 34-42-33-000-001 | Removal of the Radio Altimeter Transceiver |
| AMM 34-42-33-400-001 | Installation of the Radio Altimeter Transceiver |
Subtask 34-42-00-740-108-A 4. Fault Isolation
Subtask 34-42-00-810-091-A
A. If the test gives the maintenance message RA2(2SA2)/WXR2(1SQ2):
Subtask 34-42-00-740-109-A - Swap the XCVR-RA, 2 [2SA2] and the radio altimeter transceiver 1 AMM 34-42-33-000-001 and AMM 34-42-33-400-001.
- Replace the radio altimeter transceiver that you installed on side 1.
- Replace the
[1SQ2] AMM 34-41-33-000-004 and AMM 34-41-33-400-003.
- Remove the weather radar transceiver 2
- Remove the radio altimeter transceiver 2
- Do a check and repair the wiring from the radio altimeter transceiver 2 to the weather radar transceiver 2 : from pins AB/2G, 3G to pins AB/5A, 6A ASM 344102
- Install the weather radar transceiver 2
- Install the radio altimeter transceiver 2.
B. Do the test given in Para. 3.