DOC AIRBUS | TSM A320FMalfunction of the ATC1/Mode S Address
TASK 34-52-00-810-820-A
Malfunction of the ATC1/Mode S Address
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 34-52-00-740-080-A 4. Fault Isolation
Subtask 34-52-00-810-075-A
[Rev.8 from Aug 2018]
2026.04.04 04:33:23 UTC
Malfunction of the ATC1/Mode S Address
1. Possible Causes
- XPDR-ATC/MODE S, 1 [1SH1]
ATC/MODE S address pin programming, connector AB
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 34-52-00-740-004 | BITE Test of the ATC |
| ASM 345201 | |
| AWM 345205 | |
| AMM 34-52-33-000-001 | Removal of the ATC/Mode S Transponder |
| AMM 34-52-33-400-001 | Installation of the ATC/Mode S Transponder |
Subtask 34-52-00-740-080-A 4. Fault Isolation
Subtask 34-52-00-810-075-A
A. If the test gives the maintenance message WRG : MODE S ADDRESS/ATC1(1SH1):
Subtask 34-52-00-740-081-A - swap the XPDR-ATC/MODE S, 1 [1SH1] and the ATC/MODE S transponder 2 AMM 34-52-33-000-001 and AMM 34-52-33-400-001.
- replace the ATC/Mode S transponder that you installed on side 2.
- remove the ATC/Mode S transponder 1
- do a check and repair the
ATC/MODE S address pin programming, connector AB ASM 345201 and AWM 345205 - install the ATC/Mode S transponder 1.
B. Do the test given in Para. 3.