Garmin GTN 650 Cockpit Reference Guide - Page 2

Warnings, Cautions, and Notes - database update

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Warnings, Cautions, and Notes WARNING: Navigation and terrain separation must NOT be predicated upon the use of the terrain function. The GTN 625/635/650 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.The Terrain Proximity feature 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 Garmin GTN 625/635/650 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 625/635/650. 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 WARNING: Do not use outdated database information.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 625/635/650 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 Pilots using an outdated database do so entirely at their own risk.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. ii GTN 625/635/650 Cockpit Reference Guide (CRG) 190-01004-04 Rev. C

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ii
GTN 625/635/650 Cockpit Reference Guide (CRG)
190-01004-04
Rev. C
Warnings, Cautions, and Notes
WARNING:
Navigation and terrain separation must NOT be predicated
upon the use of the terrain function. The GTN 625/635/650 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. The Terrain Proximity feature 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 Garmin GTN 625/635/650 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 625/635/650. 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 625/635/650 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.