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

TASK 27-10-00-810-828-A
Loss of the Servovalve Signal for the Right Blue Aileron Servo Control

1. Possible Causes

ELAC-2 [2CE2]
servovalve
wiring of the SV signal from the servo control (33CE4) to the ELAC 2 (2CE2)

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 279303
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 27-10-00-700-091-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 27-10-00-810-077-A

A. If the test gives the maintenance message:
R B AIL SERVO VLV 33CE4 OR OUTPUT FROM ELAC 2

Replace the ELAC-2 [2CE2] , 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 (33CE4), AMM 27-14-51-000-003 and AMM 27-14-51-400-003.
At the 33CE4 receptacle, do a check of the resistance between pin E and pin F ASM 279303.

NOTE: The resistance must be 500 ohms +/- 10 %.

(2) If the fault continues:

do a check and repair the wiring of the SV signal from the servo control (33CE4) to the ELAC 2 (2CE2), ASM 279303.

Subtask 27-10-00-700-092-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:27:28 UTC