Functional Test of the Anti-Skid System with the Alternate Braking System ON

TASK 32-43-00-720-002-A
Functional Test of the Anti-Skid System with the Alternate Braking System ON

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

REFERENCE	QTY	DESIGNATION
No specific	AR	MACHINE - DRILLING, MIN 900 RPM
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
355M03190000	1	MLG WHEEL TACHOMETER DRIVING TOOL
355M03190001	1	WHEEL TACHYMETER DRIVING TOOL, MLG
98D32403003000	2	DRIVING ADAPTOR
98D32403004000	2	DRIVING ADAPTER
G5-5M0-319-0000	1	MLG WHEEL TACHYMETER DRIVING TOOL

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 24-41-00-861-002-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 27-96-00-740-001-A	BITE Test of the EFCS (Ground Scanning)
TASK 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 34-10-00-860-004-A	Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-01	Automatic Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-02	Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs)
TASK 34-10-00-860-005-A	ADIRS Stop Procedure

3. Job Set-up
Subtask 32-43-00-941-061-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 the 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 a WARNING NOTICE(S) in the cockpit to tell persons not to operate the landing gear or the landing gear doors.

Subtask 32-43-00-010-056-A

B. Get Access
(1) Remove the hubcap or the debris guard (if brake fans are installed) on all the wheels.

Subtask 32-43-00-860-070-A

C. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) On the panel 402VU, make sure that the A/SKID NWS selector switch is in the OFF position.
(3) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-863-001).
(4) Do the IR alignment procedure (Ref. AMM TASK 34-10-00-860-004).
(5) On the panel 402VU, put the A/SKID NWS selector switch in the ON position.
(6) Install the 355M03190000 MLG WHEEL TACHOMETER DRIVING TOOL or 355M03190001 WHEEL TACHYMETER DRIVING TOOL, MLG or the G5-5M0-319-0000 MLG WHEEL TACHYMETER DRIVING TOOL on one wheel on each main landing gear.
Or as an alternative, if the 355M03190000 MLG WHEEL TACHOMETER DRIVING TOOL or 355M03190001 WHEEL TACHYMETER DRIVING TOOL, MLG or the G5-5M0-319-0000 MLG WHEEL TACHYMETER DRIVING TOOL is not available:
(a) Install one 98D32403003000 DRIVING ADAPTOR for aircraft without brake fan or one 98D32403004000 DRIVING ADAPTER for aircraft fitted with brake fans on each of two MACHINE - DRILLING, MIN 900 RPM.
(b) Connect the 98D32403003000 DRIVING ADAPTOR or the 98D32403004000 DRIVING ADAPTER to the tachometer drive shaft on the related tachometer.

Subtask 32-43-00-865-057-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/Y BRK/PRESS/IND	61GG	C10
** ON A/C NOT FOR ALL
49VU	ABCU &/Y BRK/PRESS IND	61GG	C10
** 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	HYDRAULIC/SOL VALVES/G/Y/PTU	1801GL	N34

4. Procedure
Subtask 32-43-00-720-052-A ** ON A/C NOT FOR ALL

A. Test of the Anti-Skid System

NOTE: In the test that follows, if you use the DRIVING ADAPTOR with the drilling machine, read DRIVING ADAPTOR as an alternative to DRIVING TOOL.

ACTION	RESULT
1.On the Captain or First Officer side:	On all the brakes:
Push the brake pedals.	The pistons are extended.
2.On each DRIVING TOOL:	On each wheel which is not connected to the DRIVING TOOL:
Set a wheel speed of between 900 and 1100 rpm for the connected wheels.	The brake pistons retract.
3.On the DRIVING TOOL connected to the wheels:	On these wheels:
Decrease the speed to zero.	The brake pistons retract.
4.Release the brake pedals.	On all the brakes: The pistons are retracted.
NOTE: You must release the brake pedals before you stop the last tachometer NOTE: The braking system goes back to the usual operating condition 20 seconds after the test.
5.Do the same steps as in paragraphs 1 to 4 for the opposite wheel on each landing gear.	On these wheels: You must get the same results.

Subtask 32-43-00-720-052-B ** ON A/C NOT FOR ALL

A. Test of the Anti-Skid System

NOTE: In the test that follows, if you use the DRIVING ADAPTOR with the drilling machine, read DRIVING ADAPTOR as an alternative to DRIVING TOOL.

ACTION	RESULT
1.On the Captain or First Officer side:	On all the brakes:
Push the brake pedals.	The pistons are extended.
2.On each DRIVING TOOL:	On all the brakes on each main landing gear:
Set a wheel speed of between 900 and 1100 rpm for the connected wheels.	The brake pistons retract.
3.Do the same steps as in paragraphs 1 to 2 for the opposite wheel on each landing gear.	On these wheels You must get the same results.
NOTE: You must release the brake pedals before you stop the last tachometer NOTE: The braking system goes back to the usual operating condition 20 seconds after the test

Subtask 32-43-00-740-051-A

B. Do a reset of the Related Spoiler Elevator Computers
(1) Do a reset the related SEC(s).
(a) For the tachometer(s) 19GG and/or 22GG:

on the overhead panel 23VU, release the FLT CTL SEC 3 pushbutton switch, then push it.
on the overhead panel 24VU, release the FLT CTL SEC 2 pushbutton switch, then push it.

(b) For the tachometer(s) 20GG and/or 21GG:

on the overhead panel 23VU, release the FLT CTL SEC 1 pushbutton switch, then push it.

(2) Do the BITE test of the EFCS computers (Ref. AMM TASK 27-96-00-740-001).
(3) Make sure that the MCDU shows no maintenance message related to the tachometer.

Subtask 32-43-00-860-071-A

C. Aircraft Maintenance Configuration
(1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-864-001).
(2) Do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the 355M03190000 MLG WHEEL TACHOMETER DRIVING TOOL or the 355M03190001 WHEEL TACHYMETER DRIVING TOOL, MLG or the G5-5M0-319-0000 MLG WHEEL TACHYMETER DRIVING TOOL or the 98D32403003000 DRIVING ADAPTOR or the 98D32403004000 DRIVING ADAPTER with the drilling machines.

5. Close-up
Subtask 32-43-00-410-058-A

A. Close Access
(1) Install the hubcap or the debris guard (if brake fans are installed) on all the wheels.

Subtask 32-43-00-942-062-A

B. Removal of Equipment
(1) Remove the WARNING NOTICE(S).
(2) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 00:48:42 UTC