Simulation of Landing Gear Connected

TASK 32-31-00-700-002-A
Simulation of Landing Gear Connected

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
Simulation of Landing Gear position, with one or more of the Landing Gear removed from the aircraft.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
98D32203502000	2	SAFETY PIN - NLG DOOR
99D32104085000	3	TEST BOX - LANDING GEAR SIMULATOR
99D32104086000	1	HARNESS - SIMULATOR, NLG
99D32104087000	2	HARNESS-MLG SIMULATOR

B. Referenced Information

REFERENCE	DESIGNATION
TASK 07-11-00-581-001-A	Lifting for Aircraft Maintenance Operations
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 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 31-32-00-860-009-A	Procedure to Get Access to the SYSTEM REPORT/TEST/L/G Page
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-481-002-A	Installation of the Safety Devices on the Landing Gear Doors
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 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-22-00-010-001-A	Nose Gear Doors - Ground Doors Opening
TASK 32-42-00-710-001-A	Operational Check of the Normal Braking System
TASK 32-47-00-710-001-A	Operational Test of the Brake Temperature System
TASK 32-48-00-710-001-A	Functional Test of The Brake Cooling System
TASK 32-69-00-740-001-A	BITE Check of Landing-Gear Control Interface-Unit (LGCIU) With Use of MCDU to Ensure that Continuous BITE is Operative
MLG Disconnection Box
MLG Harness 2M - Location and Detail
NLG - Electrical Harness 1M
NLG - Electrical Harness 2M

3. Job Set-up
Subtask 32-31-00-941-088-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Make sure that the ground safety locks are installed on all of the installed landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:

make sure that the landing-gear control lever 6GA is in the DOWN position
put the WARNING NOTICE(S) in position to tell persons not to operate the landing-gear.

(4) On the panel 110VU:

put a WARNING NOTICE(S) on the GRAVITY GEAR EXTN handle to tell persons not to operate the landing-gear doors.

(5) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the brakes.
(6) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flap/slat controls.
(7) Put a WARNING NOTICE(S) in position on the ground service connections to tell persons not to pressurize:

the Green Hydraulic system
the Yellow Hydraulic system.

Subtask 32-31-00-860-102-A

B. Aircraft Maintenance Configuration
(1) Make sure that the Green and the Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-00-00-864-001).
(2) Make sure that the aircraft is lifted on jacks (Ref. AMM TASK 07-11-00-581-001).
(3) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(4) Get access to the landing gear (L/G) page on the MCDU (Ref. AMM TASK 31-32-00-860-009).

Subtask 32-31-00-869-113-A

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

Subtask 32-31-00-865-109-A

D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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	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 32-31-00-860-104-A

E. Aircraft Maintenance Configuration
(1) Use external power to energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 32-31-00-010-079-A

F. Get Access
(1) Make sure that the NLG doors are open (Ref. AMM TASK 32-22-00-010-001).
(2) Make sure that a 98D32203502000 SAFETY PIN - NLG DOOR is installed in each NLG door (Ref. AMM TASK 32-00-00-481-002).
(3) Make sure that the MLG doors are open (Ref. AMM TASK 32-12-00-010-001).
(4) Make sure that a GROUND LOCK SLEEVE is installed on each MLG door actuating cylinder (Ref. AMM TASK 32-00-00-481-002).
(5) Put the ACCESS PLATFORM 2M (6 FT) in position adjacent to the applicable MLG, below the zone 730 or 740.
(6) Open the applicable access panel 574AB (674AB).

Subtask 32-31-00-480-068-A

G. Test Equipment Installation
(1) Disconnect the electrical connector of the MLG harness 1M, as follows:

MLG Disconnection Box

(a) Remove the screws (1) and lower the lid (3) on the lanyards.
(b) Remove the screw (5) and the cleat (6).
(c) Disconnect the electrical connector (2) from 4027VC (4028VC) and remove the MLG harness 1M (4) from the box.
(d) Put a CAP - BLANKING on the disconnected electrical connector (2) of the MLG harness 1M (4).
(2) Disconnect the electrical connector of the MLG harness 2M, as follows:

MLG Harness 2M - Location and Detail

(a) Disconnect the electrical connector (1) from 4029VC (4030VC).
(b) Put a CAP - BLANKING on the disconnected electrical connector (1) of the MLG harness 2M.
(3) Connect the 99D32104085000 TEST BOX - LANDING GEAR SIMULATOR with the 99D32104087000 HARNESS-MLG SIMULATOR to the applicable MLG harness interface as follows:
(a) Connect the cable connectors of the test harness to:

the applicable electrical connectors of the MLG harness interface 1M and 2M
the simulation test box.

(4) Disconnect the electrical connector of the NLG harness 1M, as follows:

NLG - Electrical Harness 1M

(a) Disconnect the electrical connector (1) from 1300VCA.
(b) Put a CAP - BLANKING on the disconnected electrical connector (1) of the NLG harness 1M.
(5) Disconnect the electrical connector of the NLG harness 2M, as follows:

NLG - Electrical Harness 2M

(a) Disconnect the electrical connector (1) from 1302VCA.
(b) Put a CAP - BLANKING on the disconnected electrical connector (1) of the NLG harness 2M.
(6) Connect the 99D32104085000 TEST BOX - LANDING GEAR SIMULATOR with the 99D32104086000 HARNESS - SIMULATOR, NLG to the applicable NLG harness interface as follows:
(a) Connect the cable connectors of the test harness to:

the applicable electrical connectors of the NLG harness interface 1M and 2M
the simulation test box.

Subtask 32-31-00-865-110-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
49VU	FWS/FWC1/SPLY	3WW	F01
** 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	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
121VU	EIS/FWC2/SPLY	2WW	Q07
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

4. Procedure
Subtask 32-31-00-740-050-A

A. Bite Test
(1) Do the Bite Test of the Landing Gear (Ref. AMM TASK 32-69-00-740-001)

Subtask 32-31-00-867-066-A

WARNING: DO NOT PUT YOUR FINGERS IN THE UPLOCK MECHANISM. THIS IS DANGEROUS.

B. Simulation of Landing Gear Connected

(1) Set the necessary simulated landing gear position as follows:

ACTION	RESULT
1.To simulate L/G DOWN and LOCKED, with Shock Absorber COMPRESSED:
A.On the simulation test box:	On the ECAM Lower DU:
set the switch (S1) to the LOCKED position and set the switch (S2) to the GROUND position.	the LKD (green) indicator lights come on.
	On the panel 402VU: the LKD (green) indicator lights come on.
	On the panels 130VU and 131VU: the MASTER WARN lights go off.

2.To simulate L/G DOWN and LOCKED, with Shock Absorber EXTENDED:
A.On the simulation test box:	On the ECAM Lower DU:
set the switch (S1) to the LOCKED position and set the switch (S2) to the FLIGHT position.	the LKD (green) indicator lights come on.
	On the panel 402VU: the LKD (green) indicator lights come on.
	On the panels 130VU and 131VU: the MASTER WARN lights go off.

3.To simulate L/G RETRACTED and LOCKED, with Shock Absorber EXTENDED:
A.On the simulation test box: set the switch (S1) to the UNLOCKED position and set the switch (S2) to the FLIGHT position.	On the ECAM Lower DU: the WHEELS page shows the wheels in the UP position and L/G CTL in amber.
	On the panel 402VU: the UNLK (red) indicator lights show.
	On the ECAM Upper DU: the L/G GEAR NOT DOWN display comes into view and after 30 seconds, L/G GEAR NOT DOWNLOCKED shows.
	On the panels 130VU and 131VU: the MASTER WARN lights (amber) flash you can hear the warning chime.

B.On the ECAM CP: push (in) the EMER CANC P/BSW.	The warning chime stops.
	On the panels 130VU and 131VU: the MASTER WARN lights go off.
C.On the panel 402VU: move the landing-gear control-lever 6GA to the UP position.	On the panel 402VU: the UNLK (red) indicator lights stay on.
D.On the aircraft: use a suitable tool (non-metallic) to move the MLG and NLG uplock hooks to the CLOSED and LOCKED position.	On the ECAM Lower DU: the L/G (red) indicator lights go off the message (amber) L/G CTL goes off the message (amber) UPLOCK shows for each landing gear.
	On the panel 402VU: the L/G (red) indicator lights go off.

4.On completion of simulation, reset the system as follows:
A.On the panel 110VU: operate the GRAVITY GEAR EXTN handle three turns in a clockwise direction at a rate of one turn at an interval of five seconds.	On the aircraft: the NLG and MLG door uplock hooks move to the open and unlocked position the input levers of the cut-out valve and the vent valves move to the operated position the NLG and MLG uplock hooks move to the open and unlocked position. If necessary, use a suitable (non-metallic) tool to move the uplock hooks to the fully open position.
	On the ECAM lower DU: the message UPLOCK goes out of view the landing gear symbols change to green triangles.
B.On the panel 110VU: operate the GRAVITY GEAR EXTN handle three turns in a counterclockwise direction at a rate of one turn at an interval of five seconds. Put it in its normal (stowed) position.	On the aircraft: the free-fall mechanism on the NLG and MLG door and gear uplocks go back to the rigged position (system reset) the input levers of the cut-out valve and the vent valves go back to the rigged position (system reset).

Subtask 32-31-00-860-103-A

C. Aircraft Maintenance Configuration
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 32-31-00-080-065-A

D. Test Equipment Removal
(1) Disconnect the 99D32104085000 TEST BOX - LANDING GEAR SIMULATOR and the 99D32104087000 HARNESS-MLG SIMULATOR from the applicable MLG harness interface as follows:
(a) Disconnect the cable connectors of the test harness from:

the MLG harness interface 1M and 2M
the simulation test box.

(2) Disconnect the 99D32104085000 TEST BOX - LANDING GEAR SIMULATOR and the 99D32104086000 HARNESS - SIMULATOR, NLG from the applicable NLG harness interface as follows:
(a) Disconnect the cable connectors of the test harness from:

the NLG harness interface 1M and 2M
the simulation test box.

(3) Connect the MLG harness 1M as follows:

MLG Disconnection Box

(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.
(c) Connect the electrical connector (2) to 4027VC (4028VC) and make sure that the route of the harness 1M (4) is correct. Put the cleat (6) in position and install the screw (5).
(d) Put the lid (3) in position and install the screws (1).
(4) Connect the MLG harness 2M as follows:

MLG Harness 2M - Location and Detail

NLG - Electrical Harness 1M

NLG - Electrical Harness 2M

5. Close-up
Subtask 32-31-00-410-073-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the applicable access panel 574AB (674AB).
(3) Remove the access platform(s).

Subtask 32-31-00-740-051-A

B. Bite Test
(1) Do the Bite Test of the Landing Gear (Ref. AMM TASK 32-69-00-740-001)

Subtask 32-31-00-710-062-A ** ON A/C NOT FOR ALL

C. Test
(1) Do an operational test of the brake temperature system (Ref. AMM TASK 32-47-00-710-001).
(2) Do an operational test of the normal brake system (Ref. AMM TASK 32-42-00-710-001).

Subtask 32-31-00-710-062-B ** ON A/C NOT FOR ALL

C. Test
(1) Do the functional test of the brake cooling system (Ref. AMM TASK 32-48-00-710-001).
(2) Do an operational test of the brake temperature system (Ref. AMM TASK 32-47-00-710-001).
(3) Do an operational test of the normal braking system (Ref. AMM TASK 32-42-00-710-001).

Subtask 32-31-00-942-092-A

D. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).
(3) Remove the SAFETY BARRIER(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 00:43:50 UTC