Disagree between COM and MON Aileron Order Signals in the ELAC1 and ELAC2 (New-Generation Side-Stick Unit)

TASK 27-93-00-810-987-A
Disagree between COM and MON Aileron Order Signals in the ELAC1 and ELAC2 (New-Generation Side-Stick Unit)

NOTE: This task is applicable only for the new-generation side-stick unit.

1. Possible Causes

ELAC-1 [2CE1]
SSU-CAPT (100CE1)
SSU-F/O (100CE2)
ANI 1-3 of ELAC 1 and ELAC 2 (COM and MON part)
ANI 1-4 of ELAC 1 and ELAC 2 (COM and MON part)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 27-93-00-810-801-A	Loss of the Roll Signal on the CAPT Side Stick for the ELAC 1
TSM TASK 27-93-00-810-802-A	Loss of the Roll Signal on the F/O Side Stick for the ELAC 1
ASM 279212
AMM 27-92-41-000-802	Removal of the New-Generation Side-Stick Unit
AMM 27-92-41-400-802	Installation of the New-Generation Side-Stick Unit
AMM 27-93-34-000-001	Removal of the ELAC
AMM 27-93-34-400-001	Installation of the ELAC

3. Fault Confirmation
Subtask 27-93-00-700-223-A ** ON A/C NOT FOR ALL

A. Test
(1) Do a check of the Post Flight Report (PFR) and the Previous Leg Report to see if the ELAC1 OR INPUT OF CAPT ROLL CTL SSTU 4CE1 or ELAC1 OR INPUT OF F/O ROLL CTL SSTU 4CE2 maintenance message is shown:
(a) If one of these maintenance messages is shown, refer to the applicable trouble shooting procedure as follows:
- If the maintenance message is related to the CAPT side stick, do the trouble shooting procedure "Loss of the Roll Signal on the CAPT Side Stick for the ELAC 1" (Ref. TSM TASK 27-93-00-810-801).
- If the maintenance message is related to the F/O side stick, do the trouble shooting procedure "Loss of the Roll Signal on the F/O Side Stick for the ELAC 1" (Ref. TSM TASK 27-93-00-810-802).
(b) If none of these maintenance messages is shown, examine again the PFR:
1 If the ELAC1 AIL ORDER DISAGREE and ELAC2 AIL ORDER DISAGREE maintenance messages are shown in flight phase 05 (PH05):
a On the overhead panel, on the FLT CTL panel 23VU: release, then push the FLT CTL/ELAC1 pushbutton switch.
b On the overhead panel, on the FLT CTL panel 24VU: release, then push the FLT CTL/ELAC2 pushbutton switch.
c Make an entry in the logbook to monitor the aircraft during the subsequent flight.
d During the subsequent flight:

If the fault occurs again, continue the trouble shooting procedure.

Subtask 27-93-00-700-223-B ** ON A/C NOT FOR ALL

A. Test
(1) Do a check of the Post Flight Report (PFR) and the Previous Leg Report to see if the ELAC1 OR INPUT OF CAPT ROLL CTL SSTU 4CE1 or ELAC1 OR INPUT OF F/O ROLL CTL SSTU 4CE2 maintenance message is shown:
(a) If one of these maintenance messages is shown, refer to the applicable trouble shooting procedure as follows:
- If the maintenance message is related to the CAPT side stick, do the trouble shooting procedure "Loss of the Roll Signal on the CAPT Side Stick for the ELAC 1" (Ref. TSM TASK 27-93-00-810-801).
- If the maintenance message is related to the F/O side stick, do the trouble shooting procedure "Loss of the Roll Signal on the F/O Side Stick for the ELAC 1" (Ref. TSM TASK 27-93-00-810-802).
(b) If none of these maintenance messages is shown, examine again the PFR:
1 If the ELAC1 AIL ORDER DISAGREE and ELAC2 AIL ORDER DISAGREE maintenance messages are shown in flight phase 08 (PH08):
a On the overhead panel, on the FLT CTL panel 23VU: release, then push the FLT CTL/ELAC1 pushbutton switch.
b On the overhead panel, on the FLT CTL panel 24VU: release, then push the FLT CTL/ELAC2 pushbutton switch.
c Make an entry in the logbook to monitor the aircraft during the subsequent flight.
d During the subsequent flight:

If the fault occurs again, continue the trouble shooting procedure.

Subtask 27-93-00-700-223-C ** ON A/C NOT FOR ALL

4. Fault Isolation
Subtask 27-93-00-810-273-A

A. If the PFR gives the maintenance message:
ELAC 1 AIL ORDER DISAGREE and ELAC 2 AIL ORDER DISAGREE

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

(1) During the subsequent flight, if the fault occurs again:

replace the SSU-CAPT (100CE1), AMM 27-92-41-000-802 AMM 27-92-41-400-802.

(2) During the subsequent flight, if the fault occurs again:

replace the SSU-F/O (100CE2), AMM 27-92-41-000-802 AMM 27-92-41-400-802.

(3) During the subsequent flight, if the fault occurs again:

Do a visual inspection for quality of the contacts related to these wirings:
ANI 1-3 of ELAC 1 and ELAC 2 (COM and MON part),
ANI 1-4 of ELAC 1 and ELAC 2 (COM and MON part) ASM 279212.

[Rev.8 from Aug 2018] 2026.04.04 04:28:11 UTC