10-34
GTN 625/635/650 Pilot’s Guide
190-01004-03 Rev. P
Terrain
10.7
HTAWS (Optional)
NOTE:
TERRAIN, TAWS, HTAWS, or HTERRAIN PROXIMITY functionality will
be available via the Terrain page, depending on the installed hardware and
configuration. HTAWS or HTERRAIN PROXIMITY are available in software
v4.00, or later.
Garmin’s Helicopter Terrain Awareness Warning System (HTAWS) is an
optional feature to increase situational awareness and aid in reducing controlled
flight into terrain. Garmin HTAWS is TSO-C194 authorized. Units installed in
helicopters that do not have HTAWS installed will display HTerrain Proximity.
This is noted by the five color terrain scale which is appropriate to the low
altitude operating environment for helicopters.
HTAWS provides visual and aural annunciations when terrain and obstacles
are a hazard to the aircraft.
HTAWS Relative
Terrain Depiction
Rotorcraft
Ownship
Figure 10-24 Map Page with Terrain
NOTE:
HTAWS-enabled units can be identified by going to the Terrain
page and checking the lower right-corner for “HTAWS.”
10.7.1 HTAWS Requirements
• The system must have a valid 3D GPS position solution
• The system must have a valid terrain/obstacle database
Summary of Contents for GTN 625
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