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GTN 625/635/650 Pilot’s Guide
190-01004-03 Rev. P
WARNING:
Navigation and terrain separation must NOT be predicated
upon the use of the terrain function. The GTN 6XX Terrain Proximity feature
is NOT intended to be used as a primary reference for terrain avoidance
and does not relieve the pilot from the responsibility of being aware of
surroundings during flight. Terrain Proximity is only to be used as an aid
for terrain avoidance and is not certified for use in applications requiring
a certified terrain awareness system. Terrain data is obtained from third
party sources. Garmin is not able to independently verify the accuracy of
the terrain data.
WARNING:
The displayed minimum safe altitudes (MSAs) are only advisory
in nature and should not be relied upon as the sole source of obstacle and
terrain avoidance information. Always refer to current aeronautical charts
for appropriate minimum clearance altitudes.
WARNING:
The GTN 6XX has a very high degree of functional integrity.
However, the pilot must recognize that providing monitoring and/or self-
test capability for all conceivable system failures is not practical. Although
unlikely, it may be possible for erroneous operation to occur without a fault
indication shown by the GTN 6XX. It is thus the responsibility of the pilot to
detect such an occurrence by means of cross-checking with all redundant
or correlated information available in the cockpit.
WARNING:
The altitude calculated by GPS receivers is geometric height
above Mean Sea Level and could vary significantly from the altitude
displayed by pressure altimeters, such as the output from the GDC 74A/B
Air Data Computer, or other altimeters in aircraft. GPS altitude should never
be used for vertical navigation. Always use pressure altitude displayed by
pressure altimeters in the aircraft.
WARNING:
Do not use outdated database information. Databases used
in the GTN 6XX system must be updated regularly in order to ensure that
the information remains current. Pilots using an outdated database do so
entirely at their own risk.
WARNING:
Do not use basemap (land and water data) information for
primary navigation. Basemap data is intended only to supplement other
approved navigation data sources and should be considered as an aid to
enhance situational awareness.
Summary of Contents for GTN 625
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