DOC AIRBUS | TSM A320FLoss of the Interface between the Weather Radar Transceiver 1 and the IR3
TASK 34-41-00-810-829-A
Loss of the Interface between the Weather Radar Transceiver 1 and the IR3
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-41-00-740-096-A ** ON A/C NOT FOR ALL
Subtask 34-41-00-810-086-B ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:33:05 UTC
Loss of the Interface between the Weather Radar Transceiver 1 and the IR3
1. Possible Causes
- ADIRU-3 [1FP3]
- XCVR-WEATHER RADAR, 1 [1SQ1]
- wiring from the ADIRU3 to the weather radar transceiver 1
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 34-41-00-740-002 | BITE Test of the Weather Radar |
| ASM 344101 | |
| AMM 34-41-33-000-004 | Removal of the Weather Radar Transceiver |
| AMM 34-41-33-400-003 | Installation of the Weather Radar Transceiver |
Subtask 34-41-00-740-096-A ** ON A/C NOT FOR ALL
A. Test
4. Fault IsolationNOTE: Do the test that follows with the ATT HDG selector switch (13FP), on the SWITCHING panel 8VU, at CAPT/ON 3.
Do the BITE test of the weather radar AMM 34-41-00-740-002. Subtask 34-41-00-810-086-B ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message ADIRU3(1FP3) IR BUS/WXR1(1SQ1):
Subtask 34-41-00-740-097-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.
- replace the XCVR-WEATHER RADAR, 1 [1SQ1] AMM 34-41-33-000-004 and AMM 34-41-33-400-003.
- remove the weather radar transceiver 1
- remove the ADIRU3
- do a check and repair the wiring from the ADIRU3 to the weather radar transceiver 1 : from pins AB/10C, 11C of the ADIRU3 to pins AB/12G, 13G of the weather radar transceiver 1 ASM 344101
- install the weather radar transceiver 1
- install the ADIRU3.
B. Do the test given in Para. 3.