Operational Test of the Nose Wheel Steering with the CFDS

TASK 32-51-00-710-001-A
Operational Test of the Nose Wheel Steering with the CFDS

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

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. 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 31-32-00-860-009-A	Procedure to Get Access to the SYSTEM REPORT/TEST/L/G Page
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)

3. Job Set-up
Subtask 32-51-00-860-050-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) On the MCDU, get the SYSTEM REPORT/TEST L/G page (Ref. AMM TASK 31-32-00-860-009).
(3) Do the IR alignment procedure (Ref. AMM TASK 34-10-00-860-004).

Subtask 32-51-00-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** 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

4. Procedure
Subtask 32-51-00-710-050-A ** ON A/C NOT FOR ALL

A. Operational Test of the Nose Wheel Steering with the CFDS

ACTION	RESULT
1.On the MCDU, push the line key adjacent to the BSCU 1 indication.	the BSCU SYS 1 page comes into view.
2.Push the line key adjacent to the TEST indication.	the BSCU SYS 1/TEST page comes into view and gives instructions.
3.Obey the instructions shown on the screen. Wait 5 seconds then push the line key adjacent to the TEST indication.	The test starts and continues for 45 seconds. If the test finds no fault: - the NO FAILURE indication comes into view. If the test results are incorrect: - a list of fault messages comes into view.
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 actions as in Para. 2. and 3..	same results as for the BSCU SYS 1.

Subtask 32-51-00-710-050-C ** ON A/C NOT FOR ALL

A. Operational Test of the Nose Wheel Steering with the CFDS

NOTE: This test is for channel 1. For channel 2, use the indications between parentheses.

ACTION	RESULT
1.On the MCDU, push the line key adjacent to the BSCU 1(2) indication.	the BSCU CHAN 1(2) page comes into view.
2.Push the line key adjacent to the SYSTEM TESTS indication.	the BSCU CHAN 1(2)/SYSTEM TESTS page comes into view.
3.Push the line key adjacent to the LRU WIRING & BSCU TEST indication.	the BSCU CHAN 1(2)/LRU WIRING & BSCU TEST page comes into view with INITIAL CONDITIONS
4.Do a check of these initial conditions:
on the ECAM control panel, push the ELEC key	On the lower ECAM DU, the ELEC page comes into view. On the ELEC page: the TR1(2) energizes the DC1(2) busbar.
on the panel 402VU, make sure that the A/SKID & NOSE WHEEL switch is at ON.
5.Push the line key adjacent to the START TEST indication. NOTE: If the IN PROGRESS 4S indication stays in view, push the line key adjacent to the RETURN indication. Do a check of all the initial conditions and do the test again.	On the BSCU CHAN 1(2) page: the IN PROGRESS 4S indication is shown then the NO FAULT DETECTED indication comes into view when the system is serviceable. If the system is not serviceable: a list of fault messages comes into view. NOTE: The prompt ">" to the right of the Class number show that there are TSD pages related to this fault. Push the line key adjacent to the prompt to get access to these pages. or if one or more of the initial conditions is not satisfactory, these indications come into view: . TEST NOT PERFORMED . the initial condition(s) that is (are) not satisfactory. or the TEST TIME OUT indication comes into view when the test is not completed in the time limit. Push the line key adjacent to the RETURN indication and do the test again.
6.Push the line key adjacent to the RETURN indication to get the SYSTEM REPORT/TEST/L/G page.

5. Close-up
Subtask 32-51-00-860-051-A

A. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 12:30:29 UTC