Uncommanded Movements of the Aircraft on Roll Axis

TASK 27-10-00-810-842-A
Uncommanded Movements of the Aircraft on Roll Axis

1. Possible Causes

ELAC-1 [2CE1]
SERVO CTL-R AILERON, INBD G [33CE2]
SERVO CTL-L AILERON, OUTBD B [33CE3]
wiring SOL VLV signal from SERVO CTL-R AILERON, INBD G and SERVO CTL-L AILERON, OUTBD B to the ELAC1
wiring POS XDCR signal from SERVO CTL-R AILERON, INBD G and SERVO CTL-L AILERON, OUTBD B to the ELAC1

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-14-51-000-001	Removal of the Aileron Servo Control
AMM 27-14-51-400-001	Installation of the Aileron Servo Control
ASM 279302
AMM 27-93-34-000-001	Removal of the ELAC
AMM 27-93-34-400-001	Installation of the ELAC

3. Fault Confirmation
Subtask 27-10-00-710-058-A

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

4. Fault Isolation
Subtask 27-10-00-810-093-A

A. If the fault symptom is identified by the crew observation F/CTL - AILERON - Uncommanded Movements of the Aircraft on Roll Axis:
(1) In the flight conditions that follow:

The speedbrakes start to extend while the flaps are in extended position (CONFIG 1+F/2) or
The flaps start to extend while the speedbrakes are in extended position,
And the Post Flight Report (PFR) does not show failure message related to the crew observation.

No maintenance action is necessary.

(2) In other flight conditions:
(a) Replace the ELAC-1 [2CE1] AMM 27-93-34-000-001 and AMM 27-93-34-400-001.
(b) Replace SERVO CTL-R AILERON, INBD G [33CE2] and SERVO CTL-L AILERON, OUTBD B [33CE3] AMM 27-14-51-000-001 and AMM 27-14-51-400-001.
(c) Do a check of the wiring SOL VLV signal from SERVO CTL-R AILERON, INBD G and SERVO CTL-L AILERON, OUTBD B to the ELAC1 COM and MON side ASM 279302.
(d) Do a check of the wiring POS XDCR signal from SERVO CTL-R AILERON, INBD G and SERVO CTL-L AILERON, OUTBD B to the ELAC1 COM and MON side ASM 279302.

[Rev.8 from Aug 2018] 2026.04.04 04:27:29 UTC