DOC AIRBUS | AMM A320FFunctional Test of the Nose-Wheel-Steering Deactivation Electrical-Box
TASK 32-51-00-720-005-A
Functional Test of the Nose-Wheel-Steering Deactivation Electrical-Box
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 32-51-00-860-056-A
Subtask 32-51-00-720-057-A
Subtask 32-51-00-860-057-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:50:57 UTC
Functional Test of the Nose-Wheel-Steering Deactivation Electrical-Box
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.
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 JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | WARNING NOTICE(S) |
| 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 31-60-00-860-001-A | EIS Start Procedure |
| TASK 31-60-00-860-002-A | EIS Stop Procedure |
Subtask 32-51-00-860-056-A
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) On the nose gear leg, on the nose wheel steering deactivation electrical box, make sure that the towing lever is in the normal position (engaged position).
(3) On the panel 400VU, make sure that the L/G normal control lever is set to DOWN.
(4) On the panel 402VU, make sure that the A/SKID & NOSE WHEEL switch is at ON.
(5) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(6) On the ECAM control panel, push the WHEEL key (on the lower ECAM DU, the WHEEL page comes into view).
(7) Make sure that the rudder pedals and the two nose-wheel steering handwheels are in the neutral position.
Subtask 32-51-00-865-064-A (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) On the nose gear leg, on the nose wheel steering deactivation electrical box, make sure that the towing lever is in the normal position (engaged position).
(3) On the panel 400VU, make sure that the L/G normal control lever is set to DOWN.
(4) On the panel 402VU, make sure that the A/SKID & NOSE WHEEL switch is at ON.
(5) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(6) On the ECAM control panel, push the WHEEL key (on the lower ECAM DU, the WHEEL page comes into view).
(7) Make sure that the rudder pedals and the two nose-wheel steering handwheels are in the neutral position.
B. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 32-51-00-865-065-A | 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 | HYDRAULIC/PARK BRK/CTL/STBY | 71GG | N37 |
| 121VU | HYDRAULIC/PARK BRK/CTL/NORM | 70GG | N36 |
| 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 |
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 32-51-00-860-092-A ** ON A/C NOT FOR ALL | 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 |
D. 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.
Subtask 32-51-00-860-092-B ** ON A/C NOT FOR ALL (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.
D. 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 10KC1 and 10KC2 are open.
4. Procedure(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 10KC1 and 10KC2 are open.
NOTE: The open status of circuit breakers 10KC1 and 10KC2 makes the engine thrust reversers unserviceable.
Subtask 32-51-00-720-057-A
A. Test
Subtask 32-51-00-865-066-A | ACTION | RESULT |
|---|---|
| 1.On the panel 110VU, put the PARK BRK control switch in the ON position. | On the nose gear leg, on the nose wheel steering deactivation electrical box 5GC, the PARKING BRAKE indicator light comes on. |
| 2.On the panel 110VU, put the PARK BRK control switch in the OFF position. | On the nose gear leg, on the nose wheel steering deactivation electrical box 5GC, the PARKING BRAKE indicator light goes off. |
| 3.On the nose gear leg on the nose wheel steering deactivation electrical box 5GC, push the LIGHT TEST pusbutton switch. | On the nose gear leg, on the nose wheel steering deactivation electrical box 5GC, the PARKING BRAKE indicator light comes on. |
| 4.On the nose gear leg on the nose wheel steering deactivation electrical box 5GC, release the LIGHT TEST pusbutton switch. | On the nose gear leg, on the nose wheel steering deactivation electrical box 5GC, the PARKING BRAKE indicator light goes off. |
| 5.On the electrical box 5GC, on the nose gear leg, put the ground towing lever in the TOWING position (disengaged position). Lock it in this position. | On the upper ECAM DU, on the MEMO page, the N. WHEEL STEERG DISC indication comes into view. NOTE: If the upper ECAM DU shows a warning, push the CLR key on the ECAM control panel until the MEMO page comes into view on the upper ECAM DU. |
| 6.On the nose gear leg, on the electrical box 5GC, put the ground towing lever in the normal position (engaged position). | On the MEMO page of the upper ECAM DU, the N. WHEEL STEERING DISC indication goes out of view. |
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
5. Close-up| 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 32-51-00-860-057-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.
(3) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(5) Make sure that the work area is clean and clear of tools and other items.
Subtask 32-51-00-860-057-B ** ON A/C NOT FOR ALL (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) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(5) Make sure that the work area is clean and clear of tools and other items.
A. Put the aircraft back to its initial configuration.
(1) Make sure that circuit breakers 10KC1 and 10KC2 are closed.
(3) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(5) Make sure that the work area is clean and clear of tools and other items.
(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) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(5) Make sure that the work area is clean and clear of tools and other items.