Loss of the AOA 1 Input to the ADR 1

TASK 34-13-00-810-906-A
Loss of the AOA 1 Input to the ADR 1

1. Possible Causes

SENSOR-ANGLE OF ATTACK, 1 [3FP1]
ADIRU-1 [1FP1]
wiring from the angle of attack sensor 1 (3FP1) to the AOA INPUTS 1 and 2 of the ADIRU 1 (1FP1)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 341102
AMM 34-11-19-000-001	Removal of the Angle of Attack Sensor
AMM 34-11-19-400-001	Installation of the Angle of Attack Sensor
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
AMM 34-13-00-740-002	INTERFACE TEST of the ADR

3. Fault Confirmation
Subtask 34-13-00-740-211-A

A. Test
Do the Interface test of the ADR (system 1) AMM 34-13-00-740-002.

4. Fault Isolation
Subtask 34-13-00-810-155-B

A. If the test gives the maintenance message AOA SENSOR1 (3FP1)/ ADIRU1 (1FP1):

replace the SENSOR-ANGLE OF ATTACK, 1 [3FP1] AMM 34-11-19-000-001 and AMM 34-11-19-400-001.

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring from the angle of attack sensor 1 (3FP1) to the AOA INPUTS 1 and 2 of the ADIRU 1 (1FP1) ASM 341102.

Subtask 34-13-00-810-256-A ** ON A/C NOT FOR ALL

B. If the test is OK, do a visual inspection of the angle of attack sensors:
(1) If an angle of attack sensor is found damaged:

(2) If no external damage is found:

(3) If no external damage is found but the message is shown again:

(4) Reset the ADIRU (NAV-OFF-NAV) to clear the ECAM message.

Subtask 34-13-00-740-212-A

C. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:27 UTC