Uploading of the Enhanced GPWC Database

TASK 34-48-00-610-001-A
Uploading of the Enhanced GPWC Database

ZONE: 128

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	ACCESS PLATFORM 1M(3 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
128	REAR AVIONIC COMPARTMENT
824

C. 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 31-32-00-860-001-A	Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page
TASK 34-48-00-740-002-B	BITE Test of the Enhanced GPWS
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
Enhanced GPWC Face
Sub-Menu Function - LRU IDENT

3. Job Set-up
Subtask 34-48-00-861-055-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 34-48-00-010-053-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 1M(3 FT) in position at access door 824 in zone 128.
(2) Open access door 824.

Subtask 34-48-00-865-098-A ** ON A/C NOT FOR ALL

C. 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

Subtask 34-48-00-970-061-A ** ON A/C NOT FOR ALL

D. Preparation for the Loading of the PCMCIA Card Software
(1) Open the door on the face of the Enhanced Ground Proximity Warning Computer (GPWC).
(a) Before you load the software make sure that the version of the terrain database is correct.
(2) If you use a new PCMCIA card, make sure that the write protect switch is in the ON position.
(3) Put the PCMCIA card into the PCMCIA card slot.

4. Procedure
Subtask 34-48-00-970-050-A ** ON A/C NOT FOR ALL

A. Loading of the PCMCIA Card Software
(1) Make sure that the COMPUTER OK LED, on the front panel of the Enhanced Ground Proximity Warning Computer (GPWC), is on.
(2) During software loading, the IN PROG LED stays on and the COMPUTER OK LED is off.
(3) When the loading is completed, the XFER COMP LED comes on.
(4) If the loading is not satisfactory, do a reset of the Enhanced GPWC.
(a) Open circuit breakers (2WZ) and (3WZ) and wait for approximately 10 seconds.
(b) Close circuit breakers (2WZ) and (3WZ).
(c) The loading of the software starts again.
(d) The XFER COMP LED comes on when the loading is completed.
(5) Remove the PCMCIA card from the Enhanced GPWC.
(6) After approximately 15 seconds, the COMPUTER OK LED comes on to tell the operator that the loading of the PCMCIA card contents is completed.
(7) On the label on the front panel door of the Enhanced GPWC, write the number of the database that you loaded.
(8) Close the door on the front panel of the Enhanced GPWC.

Subtask 34-48-00-710-079-A ** ON A/C NOT FOR ALL

B. Do a check of the P/Ns TERRAIN DB software and ENV MOD software uploaded in the Enhanced GPWC.
(1) On the MCDU, get the SYSTEM REPORT/TEST NAV: RADIO NAV page 3/3 (Ref. AMM TASK 31-32-00-860-001) then the LRU IDENTIFICATION page

Sub-Menu Function - LRU IDENT ** ON A/C NOT FOR ALL

(2) On the LRU IDENTIFICATION page, make sure that the P/Ns TERRAIN DB software and ENV MOD software uploaded in the Enhanced GPWC are the same as the P/Ns written on the label of the PCMCIA card.

Subtask 34-48-00-740-053-A ** ON A/C NOT FOR ALL

C. Do the BITE Test of the Enhanced GPWC (Ref. AMM TASK 34-48-00-740-002).

5. Close-up
Subtask 34-48-00-410-053-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).

Subtask 34-48-00-862-054-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

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