Operational Check of THS Actuator Electrical Load Sensing Device

TASK 27-44-51-710-802-A
Operational Check of THS Actuator Electrical Load Sensing Device

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.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

ZONE: 310

1. Reason for the Job
Refer to the MPD TASK: 274451-14
OPERATIONAL CHECK OF THS ACTUATOR ELECTRICAL LOAD SENSING DEVICE
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
98D27403500000	1	PITCH TRIM CONTROL LOCKING

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
310	FUSLG TAIL SECTION AFT OF AFT PRESS BHD
312AR

C. 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 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-23-00-863-001-A	Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 29-23-00-864-001-A	Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
Electrical Load Sensing Device ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 27-44-51-010-069-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Put the WARNING NOTICE(S) in the cockpit to tell persons not to operate the pitch controls.
(2) Put the 98D27403500000 PITCH TRIM CONTROL LOCKING on the pitch-trim control wheel in the flight compartment.
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position.
(4) Open access door 312AR.

Subtask 27-44-51-865-074-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	THS ACTR/ELSD	95CE	Q15
** ON A/C NOT FOR ALL
121VU	THS ACTR/ELSD	95CE	P15

Subtask 27-44-51-860-074-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Pressurize the Yellow and the Green hydraulic systems (Ref. AMM TASK 29-23-00-863-001).
(3) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(4) On the center pedestal on the ECAM control panel, push the F/CTL pushbutton switch.
(5) Make sure that on the lower display unit (DU) of the ECAM, the F/CTL page comes on.

4. Procedure
Subtask 27-44-51-710-053-A ** ON A/C NOT FOR ALL

A. Operational Check of THS Actuator Electrical Load Sensing Device
(1) Two persons are necessary: One person in the cockpit and one person at the THSA.

ACTION	RESULT
1.On the panel 24VU: make sure that the FLT CTL/ELAC 2 pushbutton switch is in ON position.
2.On the L/H part of the upper ECAM DU: make sure that there is no ELAC 2 PITCH FAULT Warning.
3.On the ELSD at the THSA: unplug the test connector.	On the L/H part of the upper ECAM DU: ELAC 2 PITCH FAULT warning comes into view.
4.On the panel 121VU: open the C/B 95CE THS ACTR ELSD.
5.On the panel 24VU: reset the FLT CTL/ELAC 2 pushbutton switch.	On the panel 24VU: the OFF legend of the ELAC 2 pushbutton switch comes on. the OFF legend of the ELAC 2 pushbutton switch goes off.
	On the L/H part of the upper ECAM DU: ELAC 2 PITCH FAULT warning goes out of view.
6.On the panel 121VU: close the C/B 95CE THS ACTR ELSD.	On the L/H part of the upper ECAM DU: the ELAC 2 PITCH FAULT warning comes into view.
7.On the ELSD at the THSA: plug the test connector.
8.On the panel 24VU: reset the FLT CTL/ELAC 2 pushbutton switch.	On the panel 24VU: the OFF legend of the ELAC 2 pushbutton switch comes on. the OFF legend of the ELAC 2 pushbutton switch goes off.
	On the L/H part of the upper ECAM DU: ELAC 2 PITCH FAULT warning goes out of view.

5. Close-up
Subtask 27-44-51-860-075-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to the serviceable condition.
(1) Depressurize the Green and Yellow hydraulic systems.
(Ref. AMM TASK 29-23-00-864-001).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 27-44-51-942-074-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 312AR.
(3) Remove the access platform(s).
(4) Remove the 98D27403500000 PITCH TRIM CONTROL LOCKING from the pitch-trim control wheel in the flight compartment.
(5) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.03.31 23:51:24 UTC