Operational Test of the Elevator and Aileron Computers (ELACs)

TASK 27-93-00-710-001-A
Operational Test of the Elevator and Aileron Computers (ELACs)

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: 210

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
822

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 29-10-00-863-003-A	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
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 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 27-93-00-860-052-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Depressurize the aircraft hydraulic systems (Ref. AMM TASK 29-23-00-864-001) (Ref. AMM TASK 29-24-00-864-001) (Ref. AMM TASK 29-10-00-864-003).

Subtask 27-93-00-010-050-A

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
(2) Open the access door 822.
(3) On the battery power center 105VU:

Loosen the two screws and remove the protective cover.

Subtask 27-93-00-865-050-A

C. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B11
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B09
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/THS/ACTR/MOT2	19CE2	B04
** ON A/C ALL
105VU	FLIGHT CONTROLS/ELAC2/STBY SPLY	16CE2	A02
105VU	FLT CTL/ELAC1/STBY SPLY	16CE1	A01
121VU	FLIGHT CONTROLS/THS ACTR/MOT1	19CE1	Q16
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

Subtask 27-93-00-860-053-A ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration
(1) On the overhead panel 23VU:

Release the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches (on these pushbutton switches, the OFF legend comes on).

(2) On the overhead panel 24VU:

Release the FLT CTL/ELAC 2, FLT CTL/SEC 2 and FLT CTL/SEC 3 pushbutton switches (on these pushbutton switches, the OFF legend comes on).

(3) Do the EIS start procedure (Ref. AMM TASK 31-60-00-860-001).
(4) On the center pedestal, on the ECAM control panel, push the F/CTL key (on the lower ECAM display unit, the F/CTL page comes into view).

4. Procedure
Subtask 27-93-00-710-050-A

A. Operational Test of the Elevator Aileron Computers (ELACs)

NOTE: This test is for ELAC1. For ELAC2, use the indications between the parentheses.

ACTION	RESULT
1.On the overhead panel 23VU (24VU):	On the overhead panel 23VU (24VU):
Push the FLT CTL/ELAC 1 (2) pushbutton switch.	The OFF legend of the FLT CTL/ELAC 1 (2) pushbutton switch goes off The FAULT legend of the FLT CTL/ELAC 1 (2) pushbutton switch comes on between 3 to 8 seconds, then goes off.
2.On the overhead panel 23VU (24VU):	On the overhead panel 23VU (24VU):
Release the FLT CTL/ELAC 1 (2) pushbutton switch.	The OFF legend of the FLT CTL/ELAC 1 (2) pushbutton switch comes on.
3.Pressurize the aircraft hydraulic systems (Ref. AMM TASK 29-23-00-863-001) (Ref. AMM TASK 29-24-00-863-001) (Ref. AMM TASK 29-10-00-863-003).
4.Move the THS in the nose up direction, with the handwheel.	The THS moves.
5.On the overhead panel 23VU (24VU):	On the overhead panel 23VU (24VU):
Push the FLT CTL/ELAC 1 (2) pushbutton switch.	The OFF legend of the FLT CTL/ELAC 1 (2) pushbutton switch goes off.
	On the center pedestal: The pitch trim control wheels move to 0.
	On the lower ECAM display unit, on the F/CTL page, on the pitch trim indicator: The position of the THS moves to 0° plus or minus 0.3
	The THS moves to 0.
6.On the CAPT side: Move the side stick to the right until it touches the stop.	On the lower ECAM display unit: The index of the right aileron moves up, the index of the left aileron moves down.
Release the side stick.	The indexes of the left and right ailerons move to the neutral position.
Move the side stick to the left until it touches the stop.	The index of the left aileron moves up, the index of the right aileron moves down.
Release the side stick.	The indexes of the left and right ailerons go back to the neutral position.
Pull the side stick rearward until it touches the stop.	The indexes of the left and right elevators move up.
Release the side stick.	The indexes of the left and right elevators go back to the neutral position.
Push the side stick forward until it touches the stop.	The indexes of the left and right elevators move down.
Release the side stick.	The indexes of the left and right elevators go back to the neutral position.
	On the upper ECAM display unit, no warning comes into view.
7.On the F/O side: Move the side stick to the right until it touches the stop.	On the lower ECAM display unit The index of the right aileron moves up, the index of the left aileron moves down.
Release the side stick.	The indexes of the left and right ailerons go back to the neutral position.
Move the side stick to the left until it touches the stop.	The index of the left aileron moves up, the index of the right aileron moves down.
Release the side stick.	The indexes of the left and right ailerons go back to the neutral position.
Pull the side stick rearward until it touches the stop.	The indexes of the left and right elevators move up.
Release the side stick.	The indexes of the left and right elevators go back to the neutral position.
Push the side stick forward until it touches the stop.	The indexes of the left and right elevators move down.
Release the side stick.	The indexes of the left and right elevators go back to the neutral position.
	On the upper ECAM display unit, no warning comes into view.
8.On the overhead panel 24VU (23VU):	On the overhead panel 24VU (23VU):
Push the FLT CTL/ELAC 2 (1) pushbutton switch.	The OFF legend of the FLT CTL/ELAC 2 (1) pushbutton switch goes off.

5. Close-up
Subtask 27-93-00-860-054-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the overhead panel 23VU:

Push the FLT CTL/SEC 1 pushbutton switch (on this pushbutton switch, the OFF legend goes off).

(2) On the overhead panel 24VU:

Push the FLT CTL/SEC 2 and FLT CTL/SEC 3 pushbutton switches (on these pushbutton switches, the OFF legend goes off).

(3) Depressurize the aircraft hydraulic systems (Ref. AMM TASK 29-23-00-864-001) (Ref. AMM TASK 29-24-00-864-001) (Ref. AMM TASK 29-10-00-864-003).
(4) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(5) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 27-93-00-410-050-A

B. Close Access
(1) Install the protective cover on the battery power center 105VU.
(2) Tighten the two screws.
(3) Close the access door 822.
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 07:13:21 UTC