Flaps Command Sensor Unit Failure

TASK 27-51-00-810-828-A
Flaps Command Sensor Unit Failure

1. Possible Causes

CSU [51CV]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-50-00-869-006	Reset of the Wing Tip Brake (WTB) of the Flap System on the Ground
AMM 27-51-17-000-001	Removal of the Command Sensor Unit
AMM 27-51-17-400-001	Installation of the Command Sensor Unit
AMM 27-54-00-710-001	Operational Test of the Flap System
AMM 27-80-00-869-004	Reset of the Wing Tip Brake (WTB) of the Slat System on the Ground
AMM 27-84-00-710-001	Operational Test of the Slat System

3. Fault Confirmation
Subtask 27-51-00-710-064-A

A. Procedure.
(1) This fault has locked the wing tip brakes of the slat and flap system, no fault confirmation is necessary.
(a) Do the fault isolation.

4. Fault Isolation
Subtask 27-51-00-810-077-A

A. Procedure.
(1) Replace the defective CSU [51CV] AMM 27-51-17-000-001 AMM 27-51-17-400-001, but do not do the operational tests of the flaps and slats.
(2) Do the reset of the WTBs of the flaps and slats AMM 27-50-00-869-006 and AMM 27-80-00-869-004.
(3) Do the operational test of the flaps and slats AMM 27-54-00-710-001 and AMM 27-84-00-710-001.

5. Close-up
Subtask 27-51-00-942-070-A

A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 27-51-00-860-071-A

B. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:39:16 UTC