10-3
190-01004-03 Rev. P
GTN 625/635/650 Pilot’s Guide
Terrain
10.3
General Database Information
Garmin TAWS and HTAWS use terrain and obstacle information supplied by
government and private sources. The data undergoes verification by Garmin to
confirm accuracy of the content.
However, the displayed information should
never be understood as being all-inclusive. Pilots must familiarize themselves
with the appropriate charts for safe flight.
NOTE:
The data contained in the terrain and obstacle databases comes
from government and private agencies. Garmin accurately processes and
cross-validates the data, but cannot guarantee its accuracy or completeness.
10.3.1 Database Versions
The version and area of coverage of each terrain/obstacle database is shown
on the System-System Status page. Databases are checked for integrity at
power-up. If a database is found to be missing and/or deficient, the
TAWS/HTAWS system fails the self-test and displays the TAWS/HTAWS system
failure message.
10.3.2 HTAWS Database Requirements
To function properly, HTAWS requires the use of databases specific to
helicopters and HTAWS. The databases required are:
• 2.5 arc-second Terrain Database
• Helicopter Obstacle Database
• Helicopter Navigation Database
10.3.3 Database Updates
For information on how to update databases, refer to section 18.2.
Summary of Contents for GTN 625
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