DOC AIRBUS | AMM A320FBITE Test of the BSCU - Steering Data
TASK 32-46-00-740-004-A
BITE Test of the BSCU - Steering Data
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 32-46-00-860-061-B
Subtask 32-46-00-740-053-B
Subtask 32-46-00-860-062-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 00:50:13 UTC
BITE Test of the BSCU - Steering Data
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 | SAFETY CLIP - CIRCUIT BREAKER |
| 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 29-10-00-863-001-A | Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-23-00-863-001-A | Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump |
| TASK 29-23-00-864-001-A | Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU |
| TASK 31-32-00-860-009-A | Procedure to Get Access to the SYSTEM REPORT/TEST/L/G Page |
Subtask 32-46-00-860-061-B
A. Aircraft Maintenance Configuration
(1) On the panel 400VU, make sure that the L/G normal control-lever is set to DOWN.
(2) On the panel 402VU, make sure that the A/SKID & NOSE WHEEL switch is at ON.
(3) Make sure that the nose-wheel steering handwheels and the rudder pedals are in the neutral position.
(4) 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).
(5) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(6) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
(7) On one MCDU, get the SYSTEM REPORT/TEST/L/G page (Ref. AMM TASK 31-32-00-860-009).
Subtask 32-46-00-941-058-A ** ON A/C NOT FOR ALL (1) On the panel 400VU, make sure that the L/G normal control-lever is set to DOWN.
(2) On the panel 402VU, make sure that the A/SKID & NOSE WHEEL switch is at ON.
(3) Make sure that the nose-wheel steering handwheels and the rudder pedals are in the neutral position.
(4) 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).
(5) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(6) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
(7) On one MCDU, get the SYSTEM REPORT/TEST/L/G page (Ref. AMM TASK 31-32-00-860-009).
B. Safety Precautions
(1) Put WARNING NOTICE(S) on the L/G normal control-lever to tell persons not to move it.
(2) On the nose-wheel steering handwheels and on the rudder pedals, put warning notices in position to tell persons not to operate them.
(3) Put a WARNING NOTICE(S) in position in the cockpit to tell persons that circuit breakers 2EN1 and 2EN2 are open.
Subtask 32-46-00-941-058-B ** ON A/C NOT FOR ALL (1) Put WARNING NOTICE(S) on the L/G normal control-lever to tell persons not to move it.
(2) On the nose-wheel steering handwheels and on the rudder pedals, put warning notices in position to tell persons not to operate them.
(3) 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.
B. Safety Precautions
(1) Put a WARNING NOTICE(S) in position:
Subtask 32-46-00-865-057-A (1) Put a WARNING NOTICE(S) in position:
- On the L/G normal control-lever (6GA), to tell persons not to move it
- On the nose-wheel steering handwheels and on the rudder pedals, to tell persons not to operate them
- In the cockpit, to tell persons that circuit breakers 10KC1 and 10KC2 are open.
NOTE: When circuit breakers 10KC1 and 10KC2 are open, the engine thrust reversers are not serviceable.
C. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 32-46-00-865-058-A | 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 |
D. Open, safety and tag this(these) circuit breaker(s):
Subtask 32-46-00-860-070-A | 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 |
E. 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.
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.
Subtask 32-46-00-740-053-B
A. Do this test:
Subtask 32-46-00-865-059-A NOTE: This test is for CHAN/SYS 1, for CHAN/SYS 2, use the indications between parentheses.
| ACTION | RESULT |
|---|---|
| 1.On the MCDU, push the line key adjacent to the BSCU 1(2) indication. |
|
| 2.Push the line key adjacent to the SPECIFIC DATA indication. |
|
| 3.Push the line key adjacent to the STEERING DATA indication. |
NOTE: If you want to refresh the parameters of the nose wheel steering system, push the line key adjacent to the REFRESH indication. |
| 4.Push the line key adjacent to the RETURN indication to get the SYSTEM REPORT/TEST/L/G page. | |
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 32-46-00-860-062-A ** ON A/C NOT FOR ALL
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) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s):
Subtask 32-46-00-860-062-B ** ON A/C NOT FOR ALL (1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s):
- Remove the warning notice which specify that the engine thrust reversers are not operational.
- Related to circuit breakers 2EN1 and 2EN2 and make sure that these circuit breakers are closed.
- From the L/G normal control-lever
- From the nose-wheel steering handwheels and from the rudder pedals.
NOTE: The open status of circuit breakers 2EN1 and 2EN2 makes the engine thrust reversers unserviceable.
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) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s) from:
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) Depressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s) from:
- The cockpit (warning notices related to circuit breakers 10KC1 and 10KC2)
- The L/G normal control-lever (6GA)
- The nose-wheel steering handwheels and the rudder pedals.