System Maintenance Manual

Page 5-26 G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Revision 1 190-00716-01
5.4 TAWS Troubleshooting
Annunciation Cause Solution
A TAWS system failure has
occurred.
• If message occurred on the first
power up after unlocking TAWS,
cycle power to initialize TAWS.
• Ensure each GDU contains the
correct database data card.
• Ensure the G1000 is configured for
TAWS:
9 If the system is not configured
for TAWS, reconfigure per
Section 3.9.6.
• Verify GIAs are online.
• Ensure a database or GDU SW
mismatch has not occurred.
9 If a mismatch has occurred,
load correct database/software
files or replace the terrain card.
TAWS system is currently
being tested.
N/A – Test will be conducted up to two
minutes
TAWS system alerting is
disabled
Enable TAWS system alerting by
pressing the INHIBIT softkey on the
MAP – TAWS page.
GPS system integrity not high
enough to enable TAWS
• Ensure valid GPS position is
received from the AUX – GPS
STATUS page.
• Check GPS antenna & associated
coaxial cabling.
• Troubleshoot GIAs.
A GPWS system failure has
occurred.
• Verify GIAs are online.
• Verify radio altimeter input is valid.
• Verify baro altitude and vertical
speed input are valid.