Inspection after NLG Steering Angle of more than 95 deg.

TASK 05-51-23-200-001-A
Inspection after NLG Steering Angle of more than 95 deg.

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.

1. Reason for the Job

NOTE: Do this procedure when the steering angle is more than 95 degrees. This can include towbar and towbarless towing operations.

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 05-51-22-200-001-A	Inspection After a NLG Towing Overload or Overrun
TASK 07-11-00-581-003-A	Lifting of the Aircraft at the Forward Jacking Point, MLG Wheels on the Ground
TASK 07-11-00-586-001-A	Lowering of the Aircraft at Forward Jacking Point, MLG Wheels on the Ground
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 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-21-00-200-803-A	Special Detailed Inspection of the Torque-Link Center Hinge-Pin
TASK 32-21-11-000-003-A	Removal of the NLG Leg Assembly
TASK 32-21-27-000-002-A	Removal of the Torque-Link Center Hinge
TASK 32-21-27-400-002-A	Installation of the Torque-Link Center Hinge
TASK 32-22-00-010-001-A	Nose Gear Doors - Ground Doors Opening
TASK 32-22-00-410-001-A	Nose Gear Doors - Ground Doors Closing
TASK 32-31-00-720-003-A	Functional Test of the Normal Extension and Retraction of the Nose Landing Gear
TASK 32-51-00-720-003-A	Functional Test of the Nose Wheel Steering with the Handwheel
TASK 32-51-42-000-001-C	Removal of the Nose-Wheel Steering Cylinder
TASK 32-51-42-000-001-C-01	Removal of the Nose-Wheel Steering Cylinder (EV NLG)
TASK 32-51-42-400-001-C	Installation of the Nose-Wheel Steering Cylinder
TASK 32-51-42-400-001-C-01	Installation of the Nose-Wheel Steering Cylinder (EV NLG)
TASK 32-51-51-000-001-A	Removal of the Nose-Wheel Steering Servo-Control
Inspection of the Nose Landing Gear

3. Job Set-up
Subtask 05-51-23-481-050-A

A. Safety Precautions
(1) Make sure that the safety devices are installed on the landing gears (Ref. AMM TASK 32-00-00-481-001).

Subtask 05-51-23-860-050-A

B. Aircraft Maintenance Configuration
(1) On panel 400VU, make sure that the landing-gear control lever is in the DOWN position.
(2) On panel 110VU, make sure that the free-fall control handle is in the usual position.
(3) On the nose gear leg, on the electrical box (5GC), make sure that the towing lever is in the towing position (disengaged position).
(4) Lift the aircraft at the forward jacking point (Ref. AMM TASK 07-11-00-581-003).
(5) Make sure that the Green hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-001).
(6) Release the remaining pressure from the servo-control (6GC) (Ref. AMM TASK 32-51-51-000-001).
(7) Make sure that the electrical circuits are de-energized (Ref. AMM TASK 24-41-00-862-002).

Subtask 05-51-23-010-050-A

C. Get Access
(1) Open the NLG doors and install the safety devices (Ref. AMM TASK 32-22-00-010-001).
(2) Put the WARNING NOTICE(S) in position to tell persons not to close the NLG doors.
(3) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

4. Procedure
Subtask 05-51-23-210-050-A

CAUTION: FOR THE RACK TEETH INSPECTION, DO NOT TURN THE ROTATING TUBE TOO MUCH TO PREVENT RACK DISENGAGEMENT. THE RACK CYLINDER RE-INSTALLATION IS NOT AN EASY PROCEDURE.

A. Inspection of the NLG

Inspection of the Nose Landing Gear

ITEM	INSPECTION TASKS	PHASE 1	PHASE 2
1.	NLG
A.	Examine the proximity sensors and their electrical harnesses for impact damage (such as breaks).	X
B.	Examine the steering system:
	(1) Examine the steering actuator body for damaged paint and deformation.	X
	(2) Measure the diameter of the FWD and rear steering actuator bodies. Do the measurement at the end of the steering actuator bodies: Make sure that the diameter is not more than 88.3 mm (3.476 in.).	X
	(3) Remove the torque-link center hinge (Ref. AMM TASK 32-21-27-000-002).	X
	(4) Do a special detailed inspection of the torque-link center hinge-pin (Ref. AMM TASK 32-21-00-200-803).	X
	If you find damage on item A. or B.: Contact Airbus for more instructions.		X
	(5) Manually move the upper torque link to turn the rotating tube. Make sure that the rotating tube turns freely.	X
	(6) Remove the NLG steering actuator (Ref. AMM TASK 32-51-42-000-001):	X
	(a) Examine the steering piston seals, the cylinders and the piston attachment. Make sure that there are no cracks or damaged paint.	X
	(b) Manually move the upper torque link to turn the rotating tube and and see the cylinder rack teeth. Do an inspection of the teeth for deformation damage. NOTE: To examine all the rack teeth, it is necessary to turn the rotating tube to one side and then the other side.	X
	(c) If you find damage on item (5) or (6)(a) or (6)(b): Remove the NLG leg assembly (Ref. AMM TASK 32-21-11-000-003). Contact Airbus for more instructions.		X
	(7) Install the torque-link center hinge (Ref. AMM TASK 32-21-27-400-002).	X
	(8) Install the NLG steering actuator (Ref. AMM TASK 32-51-42-400-001).	X

Subtask 05-51-23-210-052-A

B. Inspection of the NLG Well

ITEM	INSP CODE	INSPECTION TASKS	PHASE 1	PHASE 2	PHASE 3	INSP SIGN	REF. FIG.
1.		NLG well
A.		Do the Inspection of the NLG well. To do this, refer to Inspection after NLG Towing Overload or Overrun (Ref. AMM TASK 05-51-22-200-001).	X

Subtask 05-51-23-720-050-A

C. Test

ITEM	INSPECTION TASKS	PHASE 1	PHASE 2
1.	Do the test of normal extension and retraction of the NLG (Ref. AMM TASK 32-31-00-720-003).	X
2.	Do a functional test of the nose wheel steering (Ref. AMM TASK 32-51-00-720-003). If you hear an unusual noise:	X
	-Remove the NLG leg assembly for overhaul (Ref. AMM TASK 32-21-11-000-003). Contact Airbus for more instructions.		X

Subtask 05-51-23-410-052-A

D. Close Access
(1) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).
(2) Lower the aircraft (Ref. AMM TASK 07-11-00-586-001).
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).

5. Close-up
Subtask 05-51-23-942-052-A

A. Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.03.31 22:51:40 UTC