DOC AIRBUS | TSM A320FLoss of the FMGC 1 Bus Feedback
TASK 22-11-00-810-803-A
Loss of the FMGC 1 Bus Feedback
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 22-11-00-710-086-A
Subtask 22-11-00-810-052-A
[Rev.8 from Aug 2018]
2026.04.04 04:25:06 UTC
Loss of the FMGC 1 Bus Feedback
1. Possible Causes
- FMGC-1 [1CA1]
wiring of the FMGC OWN A (MON) bus from the FMGC 1 (1CA1) to the first terminal block wiring of the FMGC MON OUT (MON) bus on the FMGC 1 (1CA1)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 22-83-34-000-001 | Removal of the FMGC |
| AMM 22-83-34-400-001 | Installation of the FMGC |
| ASM 228602 | |
| AMM 22-96-00-710-001 | Operational Test of the AFS |
Subtask 22-11-00-710-086-A
A. Test
(1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FMGC 1.
4. Fault Isolation(1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FMGC 1.
Subtask 22-11-00-810-052-A
A. If the test gives the maintenance message AFS: FMGC1/C-M ARINC LINK:
Subtask 22-11-00-710-087-A - replace the FMGC-1 [1CA1] AMM 22-83-34-000-001 and AMM 22-83-34-400-001.
- do a check of the
wiring of the FMGC OWN A (MON) bus from the FMGC 1 (1CA1) to the first terminal block ASM 228602.
- repair the above wiring.
- do a check and repair the
wiring of the FMGC MON OUT (MON) bus on the FMGC 1 (1CA1) , pin AE/14A, 14B to pin AB/9J, 9K ASM 228602.
B. Do the test given in Para. 3.