Garmin Appliance Data User's Guide Page 58

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52
Part Four: Section 2
HTAWS Operation
Obstacle is at or above the aircraft altitude (Red)
250 ft
250 ft
Obstacle is between 250 ft and 0 ft
below the aircraft altitude (Yellow)
Obstacle is 250 ft, or more,
below the aircraft altitude (Gray)
HTAWS Obstacle Altitude Colors and Symbology
Potential Impact Point Alert Level
WARNING (Red)
CAUTION (Yellow)
HTAWS Alert Coloring and Symbology
Airport/Heliport Terrain “Cutouts”
For software version 4.00 and later: when configured
for helicopters (the helicopter icon will be displayed),
black, circular or oblong “cutouts” will be displayed on
the Terrain Page around airports and heliports, to enhance
viewing of the information displayed for those locations.
The Terrain legend (shown in the lower right of the
display on the Terrain Page) defines the color black as
-500 ft. However, this does not apply to the black cutouts
surrounding the airports and heliports.
Airport and Heliport Cutouts
NOTE: The cutouts are for display purposes only
and do not affect the performance of HTAWS.
General Database Information
Garmin HTAWS uses terrain and obstacle information
supplied by government 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
agencies. Garmin accurately processes and cross-
validates the data, but cannot guarantee the
accuracy and completeness of the data.
The terrain/obstacle databases are contained on a
datacard which is inserted in the right-most slot of the
400W/500W Series units.
Database Versions
The version and area of coverage of each terrain/obstacle
database is shown on the Terrain Database Versions Page,
located in the AUX Page Group. Databases are checked for
integrity at power-up. If a database is found to be missing
and/or deficient, the HTAWS system fails the self-test and
displays the HTAWS system failure message.
190-00356-30 Rev L
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