Slat WTB Solenoids - WTB Test Procedure

TASK 27-81-00-040-001-A
Slat WTB Solenoids - WTB Test Procedure

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

FIN: 21CV
Task Summary

Access	Test	Specific Tools	Mhr	E/T	Nb Men
NO	NO	NO	1.0	1.0	1

1. Reason for the Job
MMEL 27-81-02A
SLAT WING TIP BRAKES SOLENOID
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 27-81-00-710-001-A	Operational Test of the Wing-Tip Brake and the Pressure-Off Brake

3. Job Set-up
Subtask 27-81-00-941-059-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the slat system.

Subtask 27-81-00-861-054-A

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) In the deactivation procedure that follows it is necessary to do the WTB/POB test with SFCC 1 (Ref. AMM TASK 27-81-00-710-001).
Prepare to pressurize the hydraulic systems.

Subtask 27-81-00-865-070-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

4. Procedure
Subtask 27-81-00-040-050-A

A. Slat WTB Solenoids - WTB Test Procedure
(1) Do the WTB/POB test with SFCC No. 1 (slat system) (Ref. AMM TASK 27-81-00-710-001).
(2) Make sure that the WTB/POB test was successful and that the MCDU shows:
SFCC 1
DATE: XXX XX__ UTC: XXXX
PERFORMED
NO FAULTS
RESULT NOT STORED

NOTE: You can only dispatch the aircraft if the WTB/POB test was successful.

(3) Put the aircraft back to its initial configuration.
(a) On the MCDU, push the key adjacent to < RETURN until the CFDS Menu page is shown.
(b) On the MCDU, push the MCDU MENU key and make sure that the MCDU MAIN Menu is shown.

5. Close-up
Subtask 27-81-00-865-073-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 27-81-00-942-056-A

B. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.03.31 23:56:18 UTC