Garmin G1000 NXi Pilot's Manual page 96

FLIGHT INSTRUMENTS
Obstacles are represented on the synthetic terrain display by standard two-dimensional tower symbols or
wind turbine symbols found on the maps. Obstacle symbols appear in the perspective view with relative
height above terrain and distance from the aircraft. Unlike the maps, which present obstacles as gray, yellow,
or red based on the obstacle height relative to the aircraft altitude, obstacles shown synthetic terrain display
are gray until the obstacle is associated with an actual FLTA alert, at which point an obstacle may be yellow
or red. Obstacles greater than 1000 feet below the aircraft altitude are not shown. Obstacles may appear
behind the flight instruments.
WIREAWARE POWER LINE OBSTACLES
NOTE: The WireAware obstacle database does not contain all known power lines. And as such, obstacle
avoidance is the sole responsibility of the flight crew.
To enhance safety, SVT incorporates Garmin' s WireAware wire obstacle technology. WireAware database
information mainly includes Hazardous Obstacle Transmission (HOT) power lines which are typically high
voltage transmission lines depicted on the VFR Sectional charts, and are considered of special interest to
pilots. These include power lines which may span rivers, valleys, canyons, or be in close proximity to
airports/heliports. For wire obstacles present in the obstacle database, the system shows these on the maps
as well as the Synthetic Vision display; see Hazard Avoidance section for more information about WireAware
alerting.
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Figure 2-42 Obstacle Caution
Garmin G1000 NXi Pilot's Guide for the Cessna NAV III
Terrain
Annunciation
Potential
Impact
Obstacle
190-02177-02 Rev. A