DOC AIRBUS | TSM A320FLoss of WINDSHEAR function seen by FAC1 and FAC2
TASK 22-66-00-810-885-A
Loss of WINDSHEAR function seen by FAC1 and FAC2
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 22-66-00-710-207-A 4. Fault Isolation
Subtask 22-66-00-810-162-A
[Rev.8 from Aug 2018]
2026.04.04 04:25:23 UTC
Loss of WINDSHEAR function seen by FAC1 and FAC2
1. Possible Causes
For defective LRU(s), see the Fault Symptoms List. - FAC-1 [1CC1]
- FAC-2 [1CC2]
wiring of the FAC OWN bus and the FAC HLTY MON (OWN & OPP) discretes
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 12-12-32-611-004 | Check of MLG Shock Absorber Fluid Level |
| AMM 12-14-32-614-003 | Check of MLG Shock Absorber Charge Pressure |
| AMM 12-22-32-640-001 | Lubrication of Main Landing Gear and Doors |
| AMM 22-60-00-710-004 | Operational Test of the Windshear Function |
| ASM 226501 | |
| AMM 22-66-34-000-002 | Removal of the FAC |
| AMM 22-66-34-400-002 | Installation of the FAC |
| ASM 226901 | |
| AMM 22-91-00-710-001 | Ground Scanning of the AFS |
| AMM 22-96-00-710-001 | Operational Test of the AFS |
| AMM 22-97-00-710-001 | Operational Test of the LAND CAT III Capability |
Subtask 22-66-00-710-207-A 4. Fault Isolation
Subtask 22-66-00-810-162-A
A. If the test gives the result WINDSHEAR TEST OK:
Subtask 22-66-00-810-161-A - do the operational test of the AFS AMM 22-96-00-710-001
- do the operational test of the LAND CAT III capability AMM 22-97-00-710-001
- do the Ground Scanning of the AFS AMM 22-91-00-710-001.
- do the trouble shooting procedure related to the maintenance message.
For defective LRU(s), see the Fault Symptoms List. .
- do a check on the Post Flight Report for other CFDS messages related to:
- Radio Altimeter System (via the FMGC),
- ADIRS System,
- Landing Gear Extension/Retractation System,
- Slats/Flaps System.
- do the trouble shooting procedure related to the maintenance message.
For defective LRU(s), see the Fault Symptoms List. .
- do the lubrification of the MLG (torque link and gland housing) AMM 12-22-32-640-001.
- check the hydraulic level (A/C on jacks) and the pressurization of the MLG shock absorber AMM 12-14-32-614-003 and AMM 12-12-32-611-004.
B. If the fault continues:
Subtask 22-66-00-710-208-A - replace the FAC-1 [1CC1] or/and FAC-2 [1CC2] and AMM 22-66-34-000-002 and AMM 22-66-34-400-002.
- do a check and repair the
wiring of the FAC OWN bus and the FAC HLTY MON (OWN & OPP) discretes between the FACs and the FWCs: ASM 226501 ASM 226901.
C. Do the test gives in Para 3.