Operational Test of the Landing Gear Doors (Without False Targets)

TASK 32-31-00-710-002-A-01
Operational Test of the Landing Gear Doors (Without False Targets)

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.

1. Reason for the Job

NOTE: This task gives an alternative method to do an operational test of the landing gear doors. This method uses the MCDU to simulate flight. Also, it is not necessary to install false targets on the weight on wheels proximity-sensors.

NOTE: This task is not applicable if LGCIU 1 and LGCIU 2 are Crane type part number 80-178-xx. If none or only one LGCIU is a Crane type, this task can be used.

NOTE: LGCIU 1 must be an Ultra type part number 664700500A4x. If LGCIU 1 is a Crane type and LGCIU 2 an Ultra type, you must interchange them.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY BARRIER(S)
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 24-41-00-862-002-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 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-864-001-A	Depressurize the Green 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 31-32-00-860-009-A	Procedure to Get Access to the SYSTEM REPORT/TEST/L/G Page
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-860-001-A	Flight Configuration Precautions with Electrical Power
TASK 32-00-00-860-001-A-01	Flight Configuration Precautions without Electrical Power
TASK 32-00-00-860-002-A	Ground Configuration after Flight Configuration with Electrical Power
TASK 32-00-00-860-002-A-01	Ground Configuration after Flight Configuration without Electrical Power
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 32-31-71-000-001-A	Removal of the LGCIU
TASK 32-31-71-400-001-A	Installation of the LGCIU

3. Job Set-up
Subtask 32-31-00-941-083-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) On panel 400VU:

Make sure that the landing-gear control lever is in the DOWN position
Put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.

(3) Make sure that the safety locks are in position on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(4) Put a WARNING NOTICE(S) adjacent to the landing gear doors to tell persons not to go near the landing gear doors.

Subtask 32-31-00-869-107-A

B. Flight Configuration Precautions
(1) Do the flight configuration precautions with electrical power (Ref. AMM TASK 32-00-00-860-001).

Subtask 32-31-00-865-096-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32
** ON A/C ALL
121VU	COM NAV/RAD ALTM/2	1SA2	K12
121VU	COM NAV/RAD ALTM/1	1SA1	K11
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

Subtask 32-31-00-860-089-A

WARNING: MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE ITEMS THEY OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM. UNWANTED MOVEMENT OF HYDRAULICALLY OPERATED ITEMS CAN CAUSE SERIOUS INJURY AND/OR DAMAGE.

D. Aircraft Maintenance Configuration - For all Landing Gear Doors

NOTE: You must do this procedure if you have to do the operational test of:

The MLG doors only
The NLG and MLG doors at the same time.

NOTE: You can energize the aircraft electrical circuits from an external power source or from the APU as necessary.

(3) If you energize the electrical circuits from an external power source, do the procedure (Ref. AMM TASK 24-41-00-861-002).
(4) If you energize the electrical circuits from the APU, do the steps that follow:
(a) Energize the electrical circuits from the APU (Ref. AMM TASK 24-41-00-861-002).
(b) Set the ADIRU 1 or 3 to ON.
(c) On panel 20VU, set the applicable ADIRS IR1/IR2/IR3 switch to the NAV position.
(5) Make sure that:

The landing gear doors are closed
The ground control handle of the landing gear doors are in the CLOSED position
The landing-gear control lever is in the DOWN position.

Subtask 32-31-00-860-148-A

E. Aircraft Maintenance Configuration - For the NLG Doors only

NOTE: You must do this procedure if you have to do the operational test of only the NLG doors.

(1) If necessary, interchange LGCIU 1 (5GA1) and LGCIU 2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) (Ref. AMM TASK 32-31-71-400-001).
(2) Pressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
(3) Open the MLG doors for access (Ref. AMM TASK 32-12-00-010-001).

NOTE: You can energize the aircraft electrical circuits from an external power source or from the APU as necessary.

(4) If you energize the electrical circuits from an external power source, do the procedure (Ref. AMM TASK 24-41-00-861-002).
(5) If you energize the electrical circuits from the APU, do the steps that follow:
(a) Energize the electrical circuits from the APU (Ref. AMM TASK 24-41-00-861-002).
(b) Set the ADIRU 1 or 3 to ON.
(c) On panel 20VU, set the applicable ADIRS IR1/IR2/IR3 switch to the NAV position.
(6) Make sure that:

The NLG doors are closed
The ground control handle of the NLG doors are in the CLOSED position
The landing-gear control lever is in the DOWN position.

4. Procedure
Subtask 32-31-00-710-060-B

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR DOORS ARE CLEAR.

A. Operational Test of the Landing Gear Doors

ACTION	RESULT
1.Open the circuit breakers: 58GA LGCIU/SYS1/BAT SPLY 59GA LGCIU/SYS2/BAT SPLY.
2.Make sure that the circuit breakers that follow are closed: 1GA LGCIU/SYS1 52GA LGCIU/SYS1/GND SPLY	This will set the LGCIU1 to on.
3.Open the circuit breaker 2GA/LGCIU/SYS2 for three seconds then close it.	This puts the LGCIU1 in control of the landing gear.
4.Get access to the SYSTEM REPORT/TEST/L/G page on the MCDU (Ref. AMM TASK 31-32-00-860-009).	The MCDU shows the SYSTEM REPORT/TEST/L/G page.
5.On the MCDU:	On the MCDU:
push the line key adjacent to the <LGCIU 1 indication.	the applicable LGCIU menu page comes into view.
push the NEXT PAGE P/BSW.	the applicable LGCIU menu page 2 comes into view.
push the line key adjacent to the <LANDING GEAR SIMULATION indication.	the LANDING GEAR SIMULATION page comes into view.
push the line key adjacent to the <NOSE + LH + RH indication.	the NOSE + LH + RH simulation page comes into view.
push the line key adjacent to the <EXTENDED indication.	the applicable < goes off.
6.On the panel 400VU:	On the panel 402VU:
set the landing gear control lever 6GA to the UP position. NOTE: When UP is selected, the control of the landing gear is moved to the LGCIU2. The LGCIU1 stays in the SIMULATION MODE.	the landing gear unlock indicators show UNLK (red) on the aircraft, the landing gear doors open correctly. NOTE: If you do not set the landing gear control lever to the DOWN position in 30 seconds: the ECAM message L/G GEAR NOT UPLOCKED will be shown. You can ignore this message (or clear it with the ECAM control panel CLEAR button) and do the subsequent steps.
7.On the panel 400VU: set the landing gear control lever to the DOWN position.	On the aircraft: the landing gear doors close correctly.
8.On the MCDU:	On the MCDU:
push the line key adjacent to the <RETURN indication.	the LANDING GEAR SIMULATION page comes into view.
9.On the MCDU:	On the MCDU:
push the line key adjacent to the <RETURN indication 3 times. set the BRT switch to off.	you exit the simulation mode. the SYSTEM REPORT/TEST/L/G page comes into view.
10.Close the circuit breakers: 58GA LGCIU/SYS1/BAT SPLY 59GA LGCIU/SYS2/BAT SPLY.

NOTE: To do the operational test of the landing gear doors (without false targets) again, do steps 1 thru 10.

5. Close-up
Subtask 32-31-00-860-090-A

A. Aircraft Maintenance Configuration- For all Landing Gear Doors

NOTE: You must do this procedure if you have done the operational test of:

The MLG doors only
The NLG and MLG doors at the same time.

(1) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001).
(2) If you have energized the aircraft electrical circuits from an external power source, do the procedure (Ref. AMM TASK 24-41-00-862-002).
(3) If you have energized the aircraft electrical circuits from the APU, do the steps that follow:
(a) Set the ADIRU 1 or 3 to OFF.
(b) On the panel 20VU, put the applicable ADIRS IR1/IR2/IR3 switch to the OFF position.
(c) De-energize the aircraft electrical circuits supplied from the APU (Ref. AMM TASK 24-41-00-862-002).

Subtask 32-31-00-860-150-A

B. Aircraft Maintenance Configuration - For the NLG Doors only

NOTE: You must do this procedure if you have done the operational test of only the NLG doors.

(1) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
(2) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(3) If you have energized the aircraft electrical circuits from an external power source, do the procedure (Ref. AMM TASK 24-41-00-862-002).
(4) If you have energized the aircraft electrical circuits from the APU, do the steps that follow:
(a) Set the ADIRU 1 or 3 to OFF.
(b) On panel 20VU, put the applicable ADIRS IR1/IR2/IR3 switch to the OFF position.
(c) De-energize the aircraft electrical circuits supplied from the APU (Ref. AMM TASK 24-41-00-862-002).

Subtask 32-31-00-869-108-A

C. Flight Configuration Precautions
(1) Put the aircraft back to the ground configuration (Ref. AMM TASK 32-00-00-860-002).

Subtask 32-31-00-942-086-A

D. Removal of Equipment
(1) Remove the SAFETY BARRIER(S).
(2) Make sure that the work area is clean and clear of tools and other items.
(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] 2026.04.01 00:44:02 UTC