Uploading of the Enhanced Ground Proximity Warning Computer (GPWC) Database

TASK 34-48-00-610-001-C
Uploading of the Enhanced Ground Proximity Warning Computer (GPWC) Database

ZONE: 210

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
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-D	BITE Test of the Enhanced EGPWS
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
Enhanced GPWC Face
Data Loading in Progress
Sub-Menu Function - LRU IDENT

3. Job Set-up
Subtask 34-48-00-861-061-A ** ON A/C NOT FOR ALL

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

Subtask 34-48-00-010-059-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at the access door 824 in zone 128.
(2) Open the access door 824 (Ref. AMM TASK 52-41-00-010-002).

Subtask 34-48-00-865-099-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

4. Procedure
Subtask 34-48-00-970-057-B ** ON A/C NOT FOR ALL

A. Uploading of the Ground Proximity Warning System (GPWS) Database with a Universal Serial Bus (USB) Mass-Storage Device in the enhanced Ground Proximity Warning Computer (GPWC) Installed on the Aircraft
(1) On the front panel of the enhanced GPWC, make sure that the COMPUTER STATUS LED is green.
(2) Open the door on the front panel of the enhanced GPWC.
(3) Make sure that the DATALOAD STATUS LED is off.
(4) Put the USB mass-storage device into the USB port.

Data Loading in Progress ** ON A/C NOT FOR ALL

(5) The DATALOAD STATUS LED becomes amber during the uploading.
(6) When the uploading is completed, the DATALOAD STATUS LED becomes green.
(7) Remove the USB mass-storage device from the enhanced GPWC.
(8) The enhanced GPWC starts again.
(9) After approximately 2 seconds, the COMPUTER STATUS LED flashes for approximately 2 seconds, then it goes off for approximately 2 seconds.
(10) The COMPUTER STATUS LED comes on green.
(11) 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) When the COMPUTER STATUS LED comes on green, the enhanced GPWC can operate.
(12) Write the number of the loaded database on the label that is on the front panel door of the enhanced GPWC.
(13) Close the door on the front panel of the enhanced GPWC.

Subtask 34-48-00-710-087-B ** 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 USB mass-storage device.

Subtask 34-48-00-740-062-A ** ON A/C NOT FOR ALL

C. Do the BITE test of the enhanced GPWS (Ref. AMM TASK 34-48-00-740-002).

5. Close-up
Subtask 34-48-00-410-059-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 the access door 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).

Subtask 34-48-00-862-060-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