Failure of the Angle of Attack Sensors

TASK 22-66-00-810-901-A
Failure of the Angle of Attack Sensors

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 34-11-00-810-861-A	Different Angle of Attack Value on the three ADIRUs
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

3. Fault Confirmation
Subtask 22-66-00-700-054-A

A. Not Applicable

4. Fault Isolation
Subtask 22-66-00-810-186-A

A. If the maintenance message AFS: AOA PROBE DISAGREE is shown:

do a visual check of the angle of attack sensors 1 (3FP1), 2 (3FP2) and 3 (3FP3).

(1) If one or more angle of attack sensor(s) is(are) damaged, replace it(them):

(2) If the angle of attack sensors are not damaged:

do the trouble shooting related to the different angle of attack value on the three ADIRUs (Ref. TSM TASK 34-11-00-810-861).

[Rev.8 from Aug 2018] 2026.04.04 04:25:25 UTC