Garmin G500, Pilot'S Manual

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7-2 Pilot’s Guide 190-01717-10 Rev. H
Terrain Awareness
Terrain Configurations
Terrain controls are accessible from the Terrain menu. Map overlay keys are accessible
from the associated map menu.
EXTERNAL TAWS
Depending on system configuration, the GDU may be capable of remotely indicating
TAWS information from the navigator.
7.1 GPS Altitude for Terrain
FUNCTIONAL REQUIREMENTS
GPS altitude is derived from satellite measurements. To acquire an accurate 3-D fix
(latitude, longitude, altitude), a minimum of four operating satellites must be in view
of the GPS receiver antenna.
The terrain system uses GPS altitude and position data to:
•
Create a 2-D image of surrounding terrain and obstacles relative to the
aircraft’s position and altitude
•
Calculate the aircraft’s flight path in relation to surrounding terrain and
obstacles
•
Predict hazardous terrain conditions and issue alerts
Available Terrain
Configurations
•
(H)Terrain Proximity
•
(H)Terrain-FLTA
•
TAWS-B
•
External TAWS
•
TAWS-A
Terrain, obstacle, and wire data
display as overlays on the Terrain
page, Map page, and HSI Map.
Alerting functions are dependent
upon the aircraft type and configured
terrain alerting options.