Unwanted (Spurious) Warnings/Indications from the FWC

TASK 31-53-00-810-956-A
Unwanted (Spurious) Warnings/Indications from the FWC

1. Possible Causes

FWC-1 [1WW1]
FWC-2 [1WW2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-53-34-000-001	Removal of the Flight Warning Computer (FWC)
AMM 31-53-34-400-001	Installation of the Flight Warning Computer (FWC)

3. Fault Confirmation
Subtask 31-53-00-710-315-A

A. Not Applicable

4. Fault Isolation
Subtask 31-53-00-810-203-A

A. If an unwanted (spurious) warning/indication is shown on the ECAM display units:
(1) Remove the FWC-1 [1WW1] AMM 31-53-34-000-001.
Make sure that the warning/indication is not shown.
(a) If the warning/indication is not shown:

replace the FWC-1 [1WW1] AMM 31-53-34-400-001.

(b) If the warning/indication is shown:

install the FWC-1 [1WW1] AMM 31-53-34-400-001.
remove the FWC-2 [1WW2] AMM 31-53-34-000-001.

replace the FWC-2 [1WW2] AMM 31-53-34-400-001.

NOTE: If the warning/indication stays on the ECAM display units, then, a failure of the FWCs is not the cause of this ECAM warning/indication.

[Rev.8 from Aug 2018] 2026.04.04 04:30:21 UTC