Loss of the Servovalve Signal for the Right Green Aileron Servo Control

TASK 27-10-00-810-821-A
Loss of the Servovalve Signal for the Right Green Aileron Servo Control

1. Possible Causes

ELAC-1 [2CE1]
servovalve
wiring of the SV signal from the servo control (33CE2) to the ELAC 1 (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 27-10-00-700-081-A ** ON A/C NOT FOR ALL

A. Test
Not applicable, you cannot confirm this fault on the ground.

Subtask 27-10-00-700-081-B ** ON A/C NOT FOR ALL

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 27-10-00-810-070-A ** ON A/C NOT FOR ALL

A. Replace the ELAC-1 [2CE1] , AMM 27-93-34-000-001 and AMM 27-93-34-400-001.
(1) On the panel 23VU, release and push the FLT CTL/ELAC 1 pushbutton switch.
(2) On the EWD, if the F/CTL AIL SERVO FAULT warning stays in view:

Replace the servovalve of the aileron servo control (33CE2), AMM 27-14-51-000-003 and AMM 27-14-51-400-003.

(3) On the panel 23VU, release and push the FLT CTL/ELAC 1 pushbutton switch.
(4) On the EWD, if the F/CTL AIL SERVO FAULT warning stays in view:

Do a check and repair the wiring of the SV signal from the servo control (33CE2) to the ELAC 1 (2CE1), ASM 279302.

Subtask 27-10-00-810-070-B ** ON A/C NOT FOR ALL

A. If the test confirms the fault:

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

(1) On the panel 23VU, release and push the FLT CTL/ELAC 1 pushbutton switch.
(2) On the EWD, if the F/CTL AIL SERVO FAULT warning stays in view:

Replace the servovalve of the aileron servo control (33CE2), AMM 27-14-51-000-003 and AMM 27-14-51-400-003.

(3) On the panel 23VU, release and push the FLT CTL/ELAC 1 pushbutton switch.
(4) On the EWD, if the F/CTL AIL SERVO FAULT warning stays in view:

Do a check and repair the wiring of the SV signal from the servo control (33CE2) to the ELAC 1 (2CE1), ASM 279302.

Subtask 27-10-00-700-082-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

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