Loss of the YAW DAMPER Signal from the FAC 1/2 to the ELAC1

TASK 27-93-00-810-932-A
Loss of the YAW DAMPER Signal from the FAC 1/2 to the ELAC1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 279237
AMM 27-93-34-000-001	Removal of the ELAC
AMM 27-93-34-400-001	Installation of the ELAC
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-93-00-740-188-A

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

4. Fault Isolation
Subtask 27-93-00-810-181-A

A. If the test gives the maintenance message ELAC1 OR WIRING FROM FAC 1/2:

(1) If the fault continues:

do a check and repair the wiring
. from the ELAC1 (2CE1) pin AA/11E to the first terminal block
. from the ELAC1 (2CE1) pin AA/8E to the first terminal block
. from the ELAC1 (2CE1) pin AE/8H to the first terminal block
. from the ELAC1 (2CE1) pin AE/7K to the first terminal block ASM 279237.

Subtask 27-93-00-740-189-A

B. Test
Do the test given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:28:07 UTC