DOC AIRBUS | TSM A320FLoss of the Reception of the ELAC 1 Discretes by One FAC or One FMGC
TASK 22-66-00-810-850-A
Loss of the Reception of the ELAC 1 Discretes by One FAC or One FMGC
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 22-66-00-865-067-A
Subtask 22-66-00-810-106-A
[Rev.8 from Aug 2018]
2026.04.04 04:25:19 UTC
Loss of the Reception of the ELAC 1 Discretes by One FAC or One FMGC
1. Possible Causes
- FAC-1 [1CC1]
wiring of the ELAC OWN HLTY MON discrete from the FAC 1 (1CC1) to the first terminal block - FAC-2 [1CC2]
wiring of the ELAC OPP HLTY COM discrete from the FAC 2 (1CC2) to the first terminal block - FMGC-1 [1CA1]
- ELAC-1 [2CE1]
wiring of the ELAC OWN AP DISC MON and ELAC OWN AP DISC COM discretes from the FMGC 1 (1CA1) to the ELAC 1 (2CE1) - FMGC-2 [1CA2]
wiring of the ELAC OPP AP DISC MON and ELAC OPP AP DISC COM discretes from the FMGC 2 (1CA2) to the ELAC 1 (2CE1)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 22-66-34-000-002 | Removal of the FAC |
| AMM 22-66-34-400-002 | Installation of the FAC |
| ASM 226801 | |
| AMM 22-83-34-000-001 | Removal of the FMGC |
| AMM 22-83-34-400-001 | Installation of the FMGC |
| ASM 228504 | |
| AMM 22-96-00-710-001 | Operational Test of the AFS |
| AMM 27-93-34-000-001 | Removal of the ELAC |
| AMM 27-93-34-400-001 | Installation of the ELAC |
Subtask 22-66-00-865-067-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 22-66-00-710-148-A 4. Fault Isolation| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B11 |
| 121VU | FLIGHT CONTROLS/ELAC2/NORM/SPLY | 15CE2 | R20 |
Subtask 22-66-00-810-106-A
A. If the test gives the maintenance message AFS: ELAC1 (ISSUED BY: FAC1):
Subtask 22-66-00-810-107-A - replace the FAC-1 [1CC1] AMM 22-66-34-000-002 and AMM 22-66-34-400-002.
- do a check and repair the
wiring of the ELAC OWN HLTY MON discrete from the FAC 1 (1CC1) to the first terminal block ASM 226801.
B. If the test gives the maintenance message AFS: ELAC1 (ISSUED BY: FAC2):
Subtask 22-66-00-810-108-A - replace the FAC-2 [1CC2] AMM 22-66-34-000-002 and AMM 22-66-34-400-002.
- do a check and repair the
wiring of the ELAC OPP HLTY COM discrete from the FAC 2 (1CC2) to the first terminal block ASM 226801.
C. If the test gives the maintenance message AFS: ELAC1 (ISSUED BY: FG1):
Subtask 22-66-00-810-109-A - replace the FMGC-1 [1CA1] AMM 22-83-34-000-001 and AMM 22-83-34-400-001.
- replace the ELAC-1 [2CE1] AMM 27-93-34-000-001 and AMM 27-93-34-400-001.
- do a check and repair the
wiring of the ELAC OWN AP DISC MON and ELAC OWN AP DISC COM discretes from the FMGC 1 (1CA1) to the ELAC 1 (2CE1) ASM 228504.
D. If the test gives the maintenance message AFS: ELAC1 (ISSUED BY: FG2):
Subtask 22-66-00-710-149-A - replace the FMGC-2 [1CA2] AMM 22-83-34-000-001 and AMM 22-83-34-400-001.
- replace the ELAC-1 [2CE1] AMM 27-93-34-000-001 and AMM 27-93-34-400-001.
- do a check and repair the
wiring of the ELAC OPP AP DISC MON and ELAC OPP AP DISC COM discretes from the FMGC 2 (1CA2) to the ELAC 1 (2CE1) ASM 228504.
E. Do the test given in Para. 3.