Garmin GTN 625 Pilot's Manual page 4

WARNING: Navigation and terrain separation must NOT be predicated
Foreword
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
Getting
Started
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
Audio &
Xpdr Ctrl for terrain avoidance and is not certified for use in applications requiring
a certified terrain awareness system. Terrain data is obtained from third
Com/Nav
party sources. Garmin is not able to independently verify the accuracy of
the terrain data.
FPL
WARNING: The displayed minimum safe altitudes (MSAs) are only advisory
Direct-To 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.
Proc
WARNING: The GTN 6XX has a very high degree of functional integrity.
Wpt Info
However, the pilot must recognize that providing monitoring and/or self-
test capability for all conceivable system failures is not practical. Although
Map
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
Traffic
detect such an occurrence by means of cross-checking with all redundant
or correlated information available in the cockpit.
Terrain
WARNING: The altitude calculated by GPS receivers is geometric height
Weather
above Mean Sea Level and could vary significantly from the altitude
displayed by pressure altimeters, such as the output from the GDC 74A/B
Nearest
Air Data Computer, or other altimeters in aircraft. GPS altitude should never
be used for vertical navigation. Always use pressure altitude displayed by
Services/
Music pressure altimeters in the aircraft.
Utilities
WARNING: Do not use outdated database information. Databases used
in the GTN 6XX system must be updated regularly in order to ensure that
System
the information remains current. Pilots using an outdated database do so
entirely at their own risk.
Messages
WARNING: Do not use basemap (land and water data) information for
primary navigation. Basemap data is intended only to supplement other
Symbols
approved navigation data sources and should be considered as an aid to
enhance situational awareness.
Appendix
Index
ii
GTN 625/635/650 Pilot's Guide 190-01004-03 Rev. P