Functional Test of the Nose Wheel Steering with the Handwheel

TASK 32-51-00-720-003-A
Functional Test of the Nose Wheel Steering with the Handwheel

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.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR 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.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: BEFORE YOU START THE NOSE WHEEL STEERING TEST, MAKE SURE THAT NO BOARDING BRIDGES ARE CONNECTED TO THE PASSENGER/CREW DOORS. IF A BOARDING BRIDGE IS CONNECTED, DAMAGE CAN OCCUR TO THE AIRCRAFT.

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

REFERENCE	QTY	DESIGNATION
No specific	2	PLATE 1.2 M (4 FT) - STEEL, SQUARED
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBB1)	Synthetic Oil base Grease-General Purpose Clay Thickened -
(Material No.03HBD9)	Synthetic Ester base Grease-General Purpose Low Temp -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 07-11-00-586-001-A	Lowering of the Aircraft at Forward Jacking Point, MLG Wheels on the Ground
TASK 07-12-00-582-001-A	Jacking of the Nose Landing Gear
TASK 09-10-00-584-002-A	Towing by the Nose Landing Gear from the Front with a Towbar
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 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow 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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 12-22-00-00	LUBRICATION - DESCRIPTION AND OPERATION

3. Job Set-up
Subtask 32-51-00-865-059-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/OIL/PRESS	2EN2	N42
121VU	ENGINE/ENG1/OIL/PRESS	2EN1	N40
** ON A/C NOT FOR ALL
121VU	OIL/PRESS/ENG2	10KC2	N42
121VU	OIL/PRESS/ENG1	10KC1	N40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/OIL/PRESS/AND REV SNSR/CHAN A	2EN2	N42
121VU	ENGINE/ENG1/OIL/PRESS/AND REV SNSR/CHAN A	2EN1	N40

Subtask 32-51-00-860-090-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons that both thrust reverser control levers are not operational.
(2) Put a WARNING NOTICE(S) in position in the cockpit to tell persons that circuit breakers 2EN1 and 2EN2 are open.

NOTE: The open status of circuit breakers 2EN1 and 2EN2 makes the engine thrust reversers unserviceable.

Subtask 32-51-00-860-090-B ** ON A/C NOT FOR ALL

NOTE: The open status of circuit breakers 10KC1 and 10KC2 makes the engine thrust reversers unserviceable.

Subtask 32-51-00-860-052-A

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) If the test is to be done with the nose wheels on the ground, do these steps:

NOTE: You will need two PLATE 1.2 M (4 FT) - STEEL, SQUARED.

(a) Position a steel plate in front of the nose wheels.
(b) Apply a thick layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the upper surface of the steel plate.

NOTE: For lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).

(c) Put the other steel plate on the top of the greased steel plate.
(d) Make sure that the nose wheels are in the center of the top test plate.
(e) Move the aircraft and position the nose wheels on the greased steel plates (Ref. AMM TASK 09-10-00-584-002).
(3) If the test is to be done with the nose wheels clear of the ground do this:
(a) Lift the nose gear (Ref. AMM TASK 07-12-00-582-001).

NOTE: Use only a compact axle jack to lift the nose gear.

(4) On the nose gear leg, on the electrical box, make sure that the towing lever is in the normal position (engaged position).
(5) On the panel 400VU, make sure that the landing gear control lever is in the DOWN position.
(6) On the panel 402VU, make sure that the ANTI SKID NOSE WHEEL switch is in the ON position.
(7) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(8) On the ECAM control panel, push the WHEEL pushbutton switch.
(9) Make sure that the rudder pedals and the two nose-wheel steering handwheels are in the neutral position.

Subtask 32-51-00-865-058-A

D. 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/FCDC1/SPLY	20CE1	B10
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B08
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
49VU	NAV PROBES/ADIRU 1/AND AOA 1/26VAC	5FP1	F07
49VU	NAV PROBES/ADIRU1/115VAC	4FP1	F06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/ELAC1/NORM/SPLY	15CE1	B06
49VU	FLIGHT CONTROLS/FCDC1/SPLY	20CE1	B05
49VU	FLIGHT CONTROLS/SEC1/NORM/SPLY	21CE1	B03
** ON A/C ALL
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY	4GG	M36
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/CTL	3GG	M35
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/CTL	1GG	M34
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY	2GG	M33
121VU	ADIRS/ADIRU/3/26VAC AND AOA	5FP3	N07
121VU	ADIRS/ADIRU/3/115VAC	4FP3	N05
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
121VU	FLIGHT CONTROLS/FCDC2/SPLY	20CE2	Q20
121VU	FLIGHT CONTROLS/SEC3/SPLY	21CE3	Q19
121VU	FLIGHT CONTROLS/ELAC2/NORM/SPLY	15CE2	R20

Subtask 32-51-00-860-084-A ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).

Subtask 32-51-00-860-084-B ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002) or (Ref. AMM TASK 29-24-00-863-001).

4. Procedure
Subtask 32-51-00-720-055-B ** ON A/C NOT FOR ALL

CAUTION: DURING THE STEERING TEST, MAKE SURE THAT THE TIRES DO NOT TOUCH THE EDGES OF THE TOP PLATES. IF THE PLATES MOVE TO AN INCORRECT POSITION, INSTALL THEM CORRECTLY AND START THE TEST AGAIN. IF YOU DO NOT OBEY THESE INSTRUCTIONS, DAMAGE TO THE TIRES CAN OCCUR.

A. Test

ACTION	RESULT
1.Turn the handwheel fully (75°) to the right or the left.	if the steering is correct (movement of the wheels = 75 deg), there is no warning if the steering is not correct: .the WHEEL NW STEER FAULT indication comes into view on the upper ECAM DU. .the NW STEER indication comes into view on the lower ECAM DU.
2.If there are warnings, on the MCDU push the line key adjacent to the BSCU A indication.	the BSCU SYS 1 page comes into view.
3.Push the line key adjacent to the GND SCAN indication.	The BSCU SYS1 GROUND SCANNING page comes into view and shows the fault message that relates to the defective equipment (LRU). NOTE: Either the steering feedback sensor (3GC or 4GC) or the steering gearbox adjustment, can cause a malfunction of the nose wheel steering.
4.Push the line key adjacent to the RETURN indication to get the SYSTEM REPORT/TEST L/G page.	the SYSTEM REPORT/TEST L/G page comes into view.
5.Push the line key adjacent to the BSCU B indication.	the BSCU SYS 2 page comes into view.
6.Do the same action as in Para. 3..	same results as for the BSCU SYS 1.

Subtask 32-51-00-720-055-C ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.Turn the handwheel fully (75°) to the right or the left.	if the steering is correct (movement of the wheels = 75 deg), there is no warning if the steering is not correct: .the WHEEL N/W STRG FAULT indication comes into view on the upper ECAM DU. .the NW STEER indication comes into view on the lower ECAM DU.
2.If there are warnings, on the MCDU push the line key adjacent to the BSCU 1 indication.	the BSCU SYS 1 page comes into view.
3.Push the line key adjacent to the GND SCAN indication.	The BSCU SYS1 GROUND SCANNING page comes into view and shows the fault message that relates to the defective equipment (LRU). NOTE: Either the steering feedback sensor (3GC or 4GC) or the steering gearbox adjustment, can cause a malfunction of the nose wheel steering.
4.Push the line key adjacent to the RETURN indication to get the SYSTEM REPORT/TEST L/G page.	the SYSTEM REPORT/TEST L/G page comes into view.
5.Push the line key adjacent to the BSCU 2 indication.	the BSCU SYS 2 page comes into view.
6.Do the same action as in Para. 3..	same results as for the BSCU SYS 1.

Subtask 32-51-00-720-055-D ** ON A/C NOT FOR ALL

A. Test

ACTION	RESULT
1.Turn the handwheel fully (75°) to the right or the left.	if the steering is correct (movement of the wheels = 75 deg), there is no warning if the steering is not correct: .the WHEEL N/W STRG FAULT indication comes into view on the upper ECAM DU. .the NW STEER indication comes into view on the lower ECAM DU.
2.If there are warnings, on the MCDU push the line key adjacent to the BSCU 1 indication.	the BSCU CHAN 1 page comes into view.
3.Push the line key adjacent to the GROUND SCANNING indication.	The BSCU CHAN 1 GROUND SCANNING page comes into view and shows the fault message that relates to the defective equipment (LRU). NOTE: Either the steering feedback sensor (3GC or 4GC) or the steering gearbox adjustment, can cause a malfunction of the nose wheel steering.
4.Push the line key adjacent to the RETURN indication to get the SYSTEM REPORT/TEST L/G page.	the SYSTEM REPORT/TEST L/G page comes into view.
5.Push the line key adjacent to the BSCU 2 indication.	the BSCU CHAN 2 page comes into view.
6.Do the same action as in Para. 3..	same results as for the BSCU CHAN 1.

Subtask 32-51-00-865-060-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/OIL/PRESS	2EN2	N42
121VU	ENGINE/ENG1/OIL/PRESS	2EN1	N40
** ON A/C NOT FOR ALL
121VU	OIL/PRESS/ENG2	10KC2	N42
121VU	OIL/PRESS/ENG1	10KC1	N40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/OIL/PRESS/AND REV SNSR/CHAN A	2EN2	N42
121VU	ENGINE/ENG1/OIL/PRESS/AND REV SNSR/CHAN A	2EN1	N40

5. Close-up
Subtask 32-51-00-860-053-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that circuit breakers 2EN1 and 2EN2 are closed.

NOTE: The open status of circuit breakers 2EN1 and 2EN2 makes the engine thrust reversers unserviceable.

(2) Remove the warning notice(s) from circuit breakers 2EN1 and 2EN2.
(3) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(4) Lower the aircraft on its wheels (Ref. AMM TASK 07-11-00-586-001).
(5) Do the EIS Stop procedure (Ref. AMM TASK 31-60-00-860-002).
(6) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(7) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(8) If the nosewheels are on grease plates, move the aircraft to remove the grease plates (Ref. AMM TASK 09-10-00-584-002).
(9) Make sure that the work area is clean and clear of tools and other items.

Subtask 32-51-00-860-053-B ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that circuit breakers 2EN1 and 2EN2 are closed.

NOTE: The open status of circuit breakers 2EN1 and 2EN2 makes the engine thrust reversers unserviceable.

(2) Remove the warning notice(s) from circuit breakers 2EN1 and 2EN2.
(3) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(4) Lower the aircraft on its wheels (Ref. AMM TASK 07-11-00-586-001).
(5) Do the EIS Stop procedure (Ref. AMM TASK 31-60-00-860-002).
(6) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(7) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(8) If the nosewheels are on grease plates, move the aircraft to remove the grease plates (Ref. AMM TASK 09-10-00-584-002).
(9) Make sure that the work area is clean and clear of tools and other items.

Subtask 32-51-00-860-053-C ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that circuit breakers 10KC1 and 10KC2 are closed.

NOTE: The open status of circuit breakers 10KC1 and 10KC2 makes the engine thrust reversers unserviceable.

(2) Remove the warning notice(s) from circuit breakers 10KC1 and 10KC2.
(3) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(4) Lower the aircraft on its wheels (Ref. AMM TASK 07-11-00-586-001).
(5) Do the EIS Stop procedure (Ref. AMM TASK 31-60-00-860-002).
(6) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(7) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(8) If the nosewheels are on grease plates, move the aircraft to remove the grease plates (Ref. AMM TASK 09-10-00-584-002).
(9) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 04:07:08 UTC