No AOA Test Activation

TASK 34-11-00-810-862-A
No AOA Test Activation

1. Possible Causes

ADIRU-1 [1FP1]
RELAY-AOA 1 TEST [21FP1]
wiring of the AOA 1 TEST relay (21FP1)
wiring of the ground signal at angle of attack sensor 1 (3FP1)
SENSOR-ANGLE OF ATTACK, 1 [3FP1]
ADIRU-2 [1FP2]
RELAY-AOA 2 TEST [21FP2]
wiring of the AOA 2 TEST relay (21FP2)
wiring of the ground signal at angle of attack sensor 2 (3FP2)
SENSOR-ANGLE OF ATTACK, 2 [3FP2]
ADIRU-3 [1FP3]
RELAY-AOA 3 TEST [21FP3]
wiring of the AOA 3 TEST relay (21FP3)
wiring of the ground signal at angle of attack sensor 3 (3FP3)
SENSOR-ANGLE OF ATTACK, 3 [3FP3]
wiring from the ADIRS/ADIRU/3SWTG/SPLY circuit breaker (9FP) to the first terminal block
C/B-ADIRS/ADIRU/3PWR/SWTG [9FP]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-10-00-710-007	Test of the Angle of Attack Warning
ASM 341101
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

3. Fault Confirmation
Subtask 34-11-00-710-081-A

A. Test
(1) Do the test of the angle of attack warning AMM 34-10-00-710-007.

4. Fault Isolation
Subtask 34-11-00-865-053-A

A. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	ADIRS/ADIRU/3PWR/SWTG	9FP	N09

Subtask 34-11-00-810-177-A

B. If you cannot start the test of the angle of attack sensor 1 on the MCDU:

replace the ADIRU-1 [1FP1] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.

(1) If the fault continues:

replace the RELAY-AOA 1 TEST [21FP1]

(a) If the fault continues:

do a check of the wiring of the AOA 1 TEST relay (21FP1):
. from pin A/A to the first terminal block
. from pin A/X to the first terminal block
. from pin A/Z to ADIRU1 (1FP1) pin AA/12G
. from pin A/2 to angle of attack sensor 1 (3FP1) pin A/X
ASM 341102.

1 If there is no continuity:

repair the above wiring.

2 If there is continuity:

do a check of the wiring of the ground signal at angle of attack sensor 1 (3FP1) pin A/V ASM 341102.

a If there is no continuity:

repair the above wiring.

b If there is continuity:

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

Subtask 34-11-00-810-178-A

C. If you cannot start the test of the angle of attack sensor 2 on the MCDU:

replace the ADIRU-2 [1FP2] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.

(1) If the fault continues:

replace the RELAY-AOA 2 TEST [21FP2]

(a) If the fault continues:

do a check of the wiring of the AOA 2 TEST relay (21FP2):
. from pin A/A to the first terminal block
. from pin A/X to the first terminal block
. from pin A/Z to ADIRU2 (1FP2) pin AA/12G
. from pin A/2 to angle of attack sensor 2 (3FP2) pin A/W
ASM 341102.

1 If there is no continuity:

repair the above wiring.

2 If there is continuity:

do a check of the wiring of the ground signal at angle of attack sensor 2 (3FP2) pin A/V ASM 341102.

a If there is no continuity:

repair the above wiring.

b If there is continuity:

replace the SENSOR-ANGLE OF ATTACK, 2 [3FP2] AMM 34-11-19-000-001 and AMM 34-11-19-400-001.

Subtask 34-11-00-810-179-A

D. If you cannot start the test of the angle of attack sensor 3 on the MCDU:

replace the ADIRU-3 [1FP3] AMM 34-12-34-000-001 and AMM 34-12-34-400-001.

(1) If the fault continues:

replace the RELAY-AOA 3 TEST [21FP3]

(a) If the fault continues:

do a check of the wiring of the AOA 3 TEST relay (21FP3):
. from pin A/A to the first terminal block
. from pin A/X to the first terminal block
. from pin A/Z to ADIRU3 (1FP3) pin AA/12G
. from pin A/2 to angle of attack sensor 3 (3FP3) pin A/X
ASM 341102.

1 If there is no continuity:

repair the above wiring.

2 If there is continuity:

do a check of the wiring of the ground signal at angle of attack sensor 3 (3FP3) pin A/V ASM 341102.

a If there is no continuity:

repair the above wiring.

b If there is continuity:

replace the SENSOR-ANGLE OF ATTACK, 3 [3FP3] AMM 34-11-19-000-001 and AMM 34-11-19-400-001.

Subtask 34-11-00-810-180-A

E. If you cannot start the test of all the angle of attack sensors on the MCDU:

do a check of the wiring from the ADIRS/ADIRU/3SWTG/SPLY circuit breaker (9FP) to the first terminal block ASM 341101.

(1) If there is non continuity:

repair the above wiring.

(2) If there is continuity:

replace the C/B-ADIRS/ADIRU/3PWR/SWTG [9FP] .

Subtask 34-11-00-710-082-A

F. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:17 UTC