Loss of the Accelerometer 2 Signal for the ELAC 1

TASK 27-93-00-810-816-A
Loss of the Accelerometer 2 Signal for the ELAC 1

1. Possible Causes

ELAC-1 [2CE1]
ACCLRM-2 [12CE2]
wiring of the ANI 4-2 signal from the ELAC 1 (2CE1) to the accelerometer 2 (12CE2)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-92-16-000-001	Removal of the Flight Control Accelerometer
AMM 27-92-16-400-001	Installation of the Flight Control Accelerometer
ASM 279224
AMM 27-93-34-000-001	Removal of the ELAC
AMM 27-93-34-400-001	Installation of the ELAC
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-93-00-740-052-A

A. Test
(1) Do the BITE test of the EFCS (ground scanning) AMM 27-96-00-740-001.
(a) If the test gives a maintenance message, do the step 4. Fault Isolation.
(b) If there is no maintenance message:
1 No other maintenance action is necessary.
2 If the fault history report shows that the same failure occurred more than three times, replace the ELAC-1 [2CE1] .

4. Fault Isolation

NOTE: If the circuit breakers 21CE1 and 22CE are open for the aircraft dispatch in MMEL conditions (SEC1 deactivated), it is not necessary to do the trouble-shooting procedure.

Subtask 27-93-00-810-065-A

A. If the BITE test gives the maintenance message:
ELAC 1 COM OR WIRING FROM ACCLRM 2 12CE2
or
ELAC 1 MON OR WIRING FROM ACCLRM 2 12CE2

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 ACCLRM-2 [12CE2] , AMM 27-92-16-000-001 and AMM 27-92-16-400-001.

(2) If the fault continues:

do a check and repair the wiring of the ANI 4-2 signal from the ELAC 1 (2CE1) to the accelerometer 2 (12CE2) ELAC 1 COM part or MON part as shown in the maintenance message ASM 279224.

Subtask 27-93-00-740-053-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:27:56 UTC