Inspection of the NLG Harnesses

TASK 32-21-00-210-803-A
Inspection of the NLG Harnesses

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.

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

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)
No specific	1	MIRROR - INSPECTION
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-21-43-000-002-A	Removal of the NLG Electrical Harness 1M
TASK 32-21-43-000-002-A-01	Removal of NLG Electrical Harness 1M (EV NLG)
TASK 32-21-43-000-003-A	Removal of the NLG Electrical Harness 2M
TASK 32-21-43-000-003-A-01	Removal of NLG Electrical Harness 2M (EV NLG)
TASK 32-21-43-400-002-A	Installation of the NLG Electrical Harness 1M
TASK 32-21-43-400-002-A-01	Installation of NLG Electrical Harness 1M (EV NLG)
TASK 32-21-43-400-003-A	Installation of the NLG Electrical Harness 2M
TASK 32-21-43-400-003-A-01	Installation of NLG Electrical Harness 2M (EV NLG)
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 32-51-00-710-001-A	Operational Test of the Nose Wheel Steering with the CFDS
TASK 32-51-00-720-005-A	Functional Test of the Nose-Wheel-Steering Deactivation Electrical-Box
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
TASK 33-43-00-710-001-A	Operational Test of the Runway Turnoff Lights
TASK 33-46-00-710-001-A	Operational Test of the Taxi and Take Off Lights
Inspection of Harnesses
Types of Damage
NLG Electrical Harnesses ** ON A/C NOT FOR ALL
NLG Electrical Harnesses ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 32-21-00-941-096-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Install the ground safety locks on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On right center instrument-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.

Subtask 32-21-00-010-077-A

B. Get Access
(1) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001)
(2) Put the ACCESS PLATFORM 2M (6 FT) adjacent to the applicable NLG.

4. Procedure
Subtask 32-21-00-210-075-A ** ON A/C NOT FOR ALL

A. Inspection of the NLG Leg Harnesses
(1) Clean the NLG Leg Harnesses and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) If necessary, use a MIRROR - INSPECTION to do the inspection.
(3) If installed, examine the braid strands of the intermediate electrical harness and look for:

INSPECTION	DAMAGE LIMITS
1.Braid strand distortion.	Permitted - The strands must not be broken.
2.Broken braid strands.	If one or more strands are broken, the height and the width of the damaged area must be: - Less than 10 per cent of the harness circumference - Not more than 5 mm (0.20 in.). Only one area with broken strands, that agrees with the given conditions, is permitted on each flexible conduit subassembly (steel braid section between connectors). No broken strands are permitted along the connector braid interface.
3.Conduit deformation.	Permitted (a) On dynamic loop areas, look for broken braid strands as given before.
	(b) On static areas, deformation is permitted, if: - The installed wire and cable are held together. - The NLG leg harnesses are fully serviceable.

(a) If you find conduit deformation, do the tests that follow to make sure that the NLG leg harnesses are fully serviceable:
1 Do the operational test of the nose wheel steering (Ref. AMM TASK 32-51-00-710-001).
2 If installed, do the operational test of the Tire Pressure Indicating System (TPIS) (Ref. AMM D/O 32-49-00-71).
(b) If the damage is more than the limits, refer to the applicable CMM for repair procedures.
(c) If necessary, replace the harness (Ref. AMM TASK 32-21-43-000-004).
(4) Examine the braid strands of the electrical harness 1M and look for:

INSPECTION	DAMAGE LIMITS
1.Braid strand distortion.	Permitted - The strands must not be broken.
2.Broken braid strands.	If one or more strands are broken, the height and the width of the damaged area must be: - Less than 10 per cent of the harness circumference - Not more than 5 mm (0.20 in.). Only one area with broken strands, that agrees with the given conditions, is permitted on each flexible conduit subassembly (steel braid section between connectors). No broken strands are permitted along the connector braid interface.
3.Conduit deformation.	Permitted (a) On dynamic loop areas, look for broken braid strands as given before.
	(b) On static areas, deformation is permitted, if: - The installed wire and cable are held together. - The NLG leg harnesses are fully serviceable.

(a) If you find conduit deformation, do the tests that follow to make sure that the NLG leg harnesses are fully serviceable:
1 Do the operational test of the taxi and take off lights (Ref. AMM TASK 33-46-00-710-001).
2 Do the operational test of the runway turnoff lights (Ref. AMM TASK 33-43-00-710-001).
3 Do the operational test of the nose wheel steering (Ref. AMM TASK 32-51-00-710-001).
4 Do the BITE test of the landing gear (Ref. AMM TASK 32-69-00-740-001).
5 If installed, do the operational test of the TPIS (Ref. AMM D/O 32-49-00-71).
(b) If the damage is more than the limits, refer to the applicable CMM for repair procedures.
(c) If necessary, replace the harness (Ref. AMM TASK 32-21-43-000-002) and (Ref. AMM TASK 32-21-43-400-002).
(5) Examine the braid strands of the electrical harness 2M and look for:

INSPECTION	DAMAGE LIMITS
1.Braid strand distortion.	Permitted - The strands must not be broken.
2.Broken braid strands.	If one or more strands are broken, the height and the width of the damaged area must be: - Less than 10 per cent of the harness circumference - Not more than 5 mm (0.20 in.). Only one area with broken strands, that agrees with the given conditions, is permitted on each flexible conduit subassembly (steel braid section between connectors). No broken strands are permitted along the connector braid interface.
3.Conduit deformation.	Permitted (a) On dynamic loop areas, look for broken braid strands as given before.
	(b) On static areas, deformation is permitted, if: - The installed wire and cable are held together. - The NLG leg harnesses are fully serviceable.

(a) If you find conduit deformation, do the tests that follow to make sure that the NLG leg harnesses are fully serviceable:
1 Do the operational test of the taxi and take off lights (Ref. AMM TASK 33-46-00-710-001).
2 Do the operational test of the runway turnoff lights (Ref. AMM TASK 33-43-00-710-001).
3 Do the operational test of the nose wheel steering (Ref. AMM TASK 32-51-00-710-001).
4 Do the BITE test of the landing gear (Ref. AMM TASK 32-69-00-740-001).
5 Do the functional test of the nose wheel steering deactivation electrical box (Ref. AMM TASK 32-51-00-720-005).
(b) If the damage is more than the limits, refer to the applicable CMM for repair procedures.
(c) If necessary, replace the harness (Ref. AMM TASK 32-21-43-000-003) and (Ref. AMM TASK 32-21-43-400-003).
(6) If installed, examine the braid strands of the lower electrical harness and look for:

INSPECTION	DAMAGE LIMITS
1.Braid strand distortion.	Permitted - The strands must not be broken.
2.Broken braid strands.	If one or more strands are broken, the height and the width of the damaged area must be: - Less than 10 per cent of the harness circumference - Not more than 5 mm (0.20 in.). Only one area with broken strands, that agrees with the given conditions, is permitted on each flexible conduit subassembly (steel braid section between connectors). No broken strands are permitted along the connector braid interface.
3.Conduit deformation.	Permitted (a) On dynamic loop areas, look for broken braid strands as given before.
	(b) On static areas, deformation is permitted, if: - The installed wire and cable are held together. - The NLG leg harnesses are fully serviceable.

(a) If you find conduit deformation, do the tests that follow to make sure that the NLG leg harnesses are fully serviceable:
1 Do the operational test of the nose wheel steering (Ref. AMM TASK 32-51-00-710-001).
2 If installed, do the operational test of the TPIS (Ref. AMM D/O 32-49-00-71).
(b) If the damage is more than the limits, refer to the applicable CMM for repair procedures.
(c) If necessary, replace the harness (Ref. AMM TASK 32-21-43-000-001).

Subtask 32-21-00-210-075-B ** ON A/C NOT FOR ALL

A. Inspection of the NLG Leg Harnesses
(1) Clean the NLG Leg Harnesses and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) If necessary, use a MIRROR - INSPECTION to do the inspection.
(3) Examine the braid strands of the electrical harness 1M and look for:

INSPECTION	DAMAGE LIMITS
1.Braid strand distortion.	Permitted - The strands must not be broken.
2.Broken braid strands.	If one or more strands are broken, the height and the width of the damaged area must be: - Less than 10 per cent of the harness circumference - Not more than 5 mm (0.20 in.). Only one area with broken strands, that agrees with the given conditions, is permitted on each flexible conduit subassembly (steel braid section between connectors). No broken strands are permitted along the connector braid interface.
3.Conduit deformation.	Permitted (a) On dynamic loop areas, look for broken braid strands as given before.
	(b) On static areas, deformation is permitted, if: - The installed wire and cable are held together. - The NLG leg harnesses are fully serviceable.

(a) If you find conduit deformation, do the tests that follow to make sure that the NLG leg harnesses are fully serviceable:
1 Do the operational test of the taxi and take off lights (Ref. AMM TASK 33-46-00-710-001).
2 Do the operational test of the runway turnoff lights (Ref. AMM TASK 33-43-00-710-001).
3 Do the operational test of the nose wheel steering (Ref. AMM TASK 32-51-00-710-001).
4 Do the BITE test of the landing gear (Ref. AMM TASK 32-69-00-740-001).
5 If installed, do the operational test of the Tire Pressure Indicating System (TPIS) (Ref. AMM D/O 32-49-00-71).
(b) If the damage is more than the limits, refer to the applicable CMM for repair procedures.
(c) If necessary, replace the harness (Ref. AMM TASK 32-21-43-000-002) and (Ref. AMM TASK 32-21-43-400-002).
(4) Examine the braid strands of the electrical harness 2M and look for:

INSPECTION	DAMAGE LIMITS
1.Braid strand distortion.	Permitted - The strands must not be broken.
2.Broken braid strands.	If one or more strands are broken, the height and the width of the damaged area must be: - Less than 10 per cent of the harness circumference - Not more than 5 mm (0.20 in.). Only one area with broken strands, that agrees with the given conditions, is permitted on each flexible conduit subassembly (steel braid section between connectors). No broken strands are permitted along the connector braid interface.
3.Conduit deformation.	Permitted (a) On dynamic loop areas, look for broken braid strands as given before.
	(b) On static areas, deformation is permitted, if: - The installed wire and cable are held together. - The NLG leg harnesses are fully serviceable.

(a) If you find conduit deformation, do the tests that follow to make sure that the NLG leg harnesses are fully serviceable:
1 Do the operational test of the taxi and take off lights (Ref. AMM TASK 33-46-00-710-001).
2 Do the operational test of the runway turnoff lights (Ref. AMM TASK 33-43-00-710-001).
3 Do the operational test of the nose wheel steering (Ref. AMM TASK 32-51-00-710-001).
4 Do the BITE test of the landing gear (Ref. AMM TASK 32-69-00-740-001).
5 Do the functional test of the nose wheel steering deactivation electrical box (Ref. AMM TASK 32-51-00-720-005).
(b) If the damage is more than the limits, refer to the applicable CMM for repair procedures.
(c) If necessary, replace the harness (Ref. AMM TASK 32-21-43-000-003) and (Ref. AMM TASK 32-21-43-400-003).
(5) If installed, examine the braid strands of the lower electrical harness and look for:

INSPECTION	DAMAGE LIMITS
1.Braid strand distortion.	Permitted - The strands must not be broken.
2.Broken braid strands.	If one or more strands are broken, the height and the width of the damaged area must be: - Less than 10 per cent of the harness circumference - Not more than 5 mm (0.20 in.). Only one area with broken strands, that agrees with the given conditions, is permitted on each flexible conduit subassembly (steel braid section between connectors). No broken strands are permitted along the connector braid interface.
3.Conduit deformation.	Permitted (a) On dynamic loop areas, look for broken braid strands as given before.
	(b) On static areas, deformation is permitted, if: - The installed wire and cable are held together. - The NLG leg harnesses are fully serviceable.

(a) If you find conduit deformation, do the tests that follow to make sure that the NLG leg harnesses are fully serviceable:
1 Do the operational test of the nose wheel steering (Ref. AMM TASK 32-51-00-710-001).
2 If installed, do the operational test of the TPIS (Ref. AMM D/O 32-49-00-71).
(b) If the damage is more than the limits, refer to the applicable CMM for repair procedures.
(c) If necessary, replace the harness (Ref. AMM TASK 32-21-43-000-001).

5. Close-up
Subtask 32-21-00-410-078-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the applicable NLG door (Ref. AMM TASK 32-22-00-410-001).

Subtask 32-21-00-942-072-A

B. Removal of Equipment
(1) Remove the WARNING NOTICE(S).
(2) Remove the SAFETY BARRIER(S).
(3) Remove all the fixtures, tools, test and support equipment used during this procedure.

[Rev.10 from 2021] 2026.04.01 00:41:53 UTC