BITE Test of the Enhanced GPWS

TASK 34-48-00-740-002-B
BITE Test of the Enhanced GPWS

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 31-32-00-860-010-A	Procedure to Get Access to the SYSTEM REPORT/TEST NAV Page
TASK 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-10-00-860-005-A	ADIRS Stop Procedure

3. Job Set-up
Subtask 34-48-00-860-063-A ** ON A/C NOT FOR ALL

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 ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	EIS/GPWS/115VAC	3WZ	P07
121VU	EIS/GPWS/28VDC	2WZ	P06

4. Procedure
Subtask 34-48-00-740-051-B ** ON A/C NOT FOR ALL

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 ** ON A/C NOT FOR ALL

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.

[Rev.10 from 2021] 2026.04.02 06:23:29 UTC