Htaws/(H)Terrain Alerting - Garmin GTN 650Xi Series Pilot's Manual

Hazard Awareness

HTAWS/(H)Terrain Alerting

NOTE
HTAWS-enabled units can be identified by going to the Terrain page and checking the
lower right-corner for "HTAWS."
FEATURE REQUIREMENTS
•
Valid 3D GPS position
•
Valid terrain/obstacle database
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. (H)Terrain Alerting is not TSO-C194
authorized.
HTAWS provides visual and aural annunciations when terrain and obstacles are a
hazard to the aircraft.
HTAWS Terrain Display
POWER UP
During power-up of the unit, the terrain/obstacle database versions are displayed
along with a disclaimer to the pilot. At the same time, HTAWS self-test begins.
HTAWS gives the following aural messages upon test completion:
"HTAWS System Test, OK," if the system passes the test.
"HTAWS System Failure," if the system fails the test.
A test failure is also annunciated visually for HTAWS, as shown in the HTAWS Alert
Summary table.
5-136 Pilot's Guide
HTAWS Relative
Terrain Depiction
Rotorcraft Ownship
190-02327-03 Rev. C