Terrain Awareness And Warning System (Optional); Taws-B Requirements; Taws-B Limitations - Garmin G500 Pilot's Manual

4.3 Terrain Awareness and Warning System
(Optional)
TAWS (Terrain Awareness and Warning System) is an optional feature to
increase situational awareness and aid in reducing controlled flight into terrain
(CFIT). TAWS provides visual and aural annunciations when terrain and
obstacles are within the given altitude threshold from the aircraft.
TAWS satisfies TSO-C151c Class B requirements for certification. Class B
TAWS is required for all Part 91 turbine aircraft operations with six or more
passenger seats and for Part 135 turbine aircraft operations with six to nine
passenger seats (FAR Parts 91.223, 135.154).
4.3.1

TAWS-B Requirements

TAWS requires the following to operate properly:
• A valid terrain/obstacle
• A valid 3-D GPS position solution
4.3.2

TAWS-B Limitations

WARNING: T
government agencies. Garmin accurately processes and cross-validates the
data but cannot guarantee the accuracy and completeness of the data.
TAWS displays terrain and obstructions relative to the altitude of the aircraft.
Refer to AFM for procedures for TAWS alerts.
TAWS uses terrain and obstacle information supplied by government sources.
Terrain information is based on terrain elevation information in a database that
may contain inaccuracies. Individual obstructions may be shown if available in
the database. The data undergoes verification by Garmin to confirm accuracy of
the content, per TSO-C151c.
190-00601-02 Rev. J
he
data contained in the TAWS databases comes from
Garmin G500/G600 Pilot's Guide
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