Loss of Channel 1/2 Yaw CTL from FAC 1/2 to ELAC 1/2

TASK 27-93-00-810-946-A
Loss of Channel 1/2 Yaw CTL from FAC 1/2 to ELAC 1/2

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 31-32-00-810-932-A	Failure of the Discrete Links
ASM 279237
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-93-00-740-196-A

A. Test
(1) Do the BITE test of the EFCS (ground scanning) AMM 27-96-00-740-001.

4. Fault Isolation
Subtask 27-93-00-810-214-A

A. If the BITE test gives the maintenance message:
ELAC1 OR WIRING FROM FAC1/2 or
ELAC2 OR WIRING FROM FAC1/2

do the trouble shooting procedure (Ref. TSM TASK 31-32-00-810-932) related to the DSI 15/18 output discret digital signal of the ELAC 1 and ELAC 2 ASM 279237.

Subtask 27-93-00-740-197-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:28:08 UTC