Loss of the Servovalve Signal for the Left Blue Aileron Servo Control

TASK 27-10-00-810-807-A
Loss of the Servovalve Signal for the Left Blue Aileron Servo Control

1. Possible Causes

ELAC-1 [2CE1]
servovalve
wiring of the SV signal from the servo control (33CE3) to the ELAC1 (2CE1)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-14-51-000-003	Removal of the Aileron Servo-Control Servovalve
AMM 27-14-51-400-003	Installation of the Aileron Servo-Control Servovalve
ASM 279302
AMM 27-93-34-000-001	Removal of the ELAC
AMM 27-93-34-400-001	Installation of the ELAC
AMM 27-96-00-710-020	Operational Test of the Side Stick Assembly (Activation for the BITE Test)
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-10-00-700-060-A

A. Test
(1) Do the operational test of the side stick assembly (activation for the BITE test) AMM 27-96-00-710-020.
(2) Do the BITE test of the EFCS (Ground Scanning) AMM 27-96-00-740-001.

4. Fault Isolation
Subtask 27-10-00-810-056-A

A. If the test gives the maintenance message:
L B AIL SERVO VLV 33CE3 OR OUTPUT FROM ELAC1

Replace the ELAC-1 [2CE1] , AMM 27-93-34-000-001 and AMM 27-93-34-400-001.

(1) If the fault continues

Replace the servovalve of the aileron servo control (33CE3), AMM 27-14-51-000-003 and AMM 27-14-51-400-003.

(2) If the fault continues:

Do a check and repair the wiring of the SV signal from the servo control (33CE3) to the ELAC1 (2CE1), ASM 279302.

Subtask 27-10-00-700-061-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:27:26 UTC