BITE Test of the Enhanced GPWS A320
1.Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
| Ref. 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| Ref. 24-41-00-861-002-A01 | Energize the Aircraft Electrical Circuits from the APU |
| Ref. 24-41-00-861-002-A02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| Ref. 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| Ref. 24-41-00-862-002-A01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| Ref. 24-41-00-862-002-A02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| Ref. 31-32-00-860-010-A | Procedure to Get Access to the SYSTEM REPORT/TEST NAV Page |
| Ref. 34-10-00-860-002-A | ADIRS Start Procedure |
| Ref. 34-10-00-860-005-A | ADIRS Stop Procedure |
3. Job Set-up
SUBTASK 34-48-00-860-063-A
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits Ref. AMM TASK 24-41-00-861-002.
(2) On the overhead control and indicating panel 21VU, on the GPWS section, make sure that the five GPWS pushbutton switches are released (legends off).
(3) On the center pedestal, on one MCDU, get the SYSTEM REPORT/TEST/NAV page then push the NEXT PAGE function key until the GPWC indication comes into view. Ref. AMM TASK 31-32-00-860-010.
(4) Do the ADIRU1 start procedure Ref. AMM TASK 34-10-00-860-002.
(5) On the FCU, on the CAPT and F/O EFIS control panels, set the mode selector switch to ARC.
(6) On the FCU, on the CAPT and F/O EFIS control panels, set the scale selector switch to 160.
SUBTASK 34-48-00-865-059-A
B. Make sure that this(these) circuit breaker(s) is(are) closed:
| PANEL | DESIGNATION | FIN | LOCATION |
| 121VU | EIS/GPWS/115VAC | 3WZ | P07 |
| 121VU | EIS/GPWS/28VDC | 2WZ | P06 |
4. Procedure
SUBTASK 34-48-00-740-051-B
A. BITE Test of the Enhanced GPWC
NOTE:
The actions and the results of this procedure occur on the MCDU used.
| ACTION | RESULT |
| On the MCDU, on the NAV page: | On the MCDU: |
| -push the line key adjacent to the GPWC indication. | -the GPWC page comes into view. |
| -push the line key adjacent to the TEST indication. | -the subsequent GPWC TEST pages with instructions come into view. |
| -push the line key adjacent to the START TEST indication, | -the TEST IN PROGRESS 20S indication comes into VIEW.-after 20s obey the instructions that are shown on the subsequent pages until the TEST OK indication comes into view. |
NOTE:
When you do the Operational Test of the Enhanced Ground Proximity Warning (GPW) computer by BITE, the same pushbutton switch can have two different designations:
— «GPWS/GS» in the MCDU instructions and
-«PULL UP/GPWS» on the Main Instrument Panel.
5. Close-up
SUBTASK 34-48-00-860-064-A
A. Put the aircraft back to its initial configuration.
(1) On the center pedestal, on the MCDU, push the line key adjacent to the RETURN indication until the MCDU MENU page comes into view.
(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) Make sure that the work area is clean and clear of tools and other items.
