GNS 430 Pilot’s Guide and Reference
11-1
SECTION 11
TERRAIN
SECTION 11: TERRAIN INTERFACE
11.1 INTRODUCTION
Overview
Garmin TERRAIN is a non-TSO-C151b-certified
terrain awareness system incorporated into GNS 430
units to increase situational awareness, and aid in
reducing controlled flight into terrain (CFIT). TERRAIN
functionality is a standard feature found in GNS 430 units
with main software version 5.01 or above, along with
appropriate hardware upgrades.
NOTE: Not all GNS 430 units are equipped with
or configured for TERRAIN. See the 400 Series
Installation Manual (190-00140-02) for TERRAIN
configuration information.
Operating Criteria
The Garmin TERRAIN system requires the following
to operate properly:
• The system must have a valid 3D GPS position
solution
• The system must have valid terrain and obstacle
databases
Advisory Only
The TERRAIN function displays altitudes of terrain
and obstructions relative to the aircraft’s altitude and are
advisory in nature only. Individual obstructions may be
shown if available in the database. Not all obstructions may
be available in the database and data may be inaccurate—
do not maneuver or navigate to avoid obstacles using
this information. Terrain information is based on terrain
elevation data contained in a database, which may contain
inaccuracies. Terrain information should be used as an
aid to visual acquisition—do not use terrain information
to navigate or maneuver to avoid terrain.
Summary of Contents for GNS 430
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