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Altitude input fail - The altitude serializer input is not available for
the GNC 250. Check the I/O settings and/or
the serializer installation. If enough satellites are
available for a 3D position fix, no pilot action is
required, providing no RAIM warnings are pre-
sent. If only a 2D fix is possible, the pilot
should maintain the GPS altitude within 1,000
feet of the pressure altitude from the position
page.
Arrival at _____ - Your craft has entered the arrival alarm circle for the
indicated waypoint.
Arrvl at offst _____ - Your craft has entered the arrival alarm circle
for the indicated waypoint offset by the parallel
track distance.
Battery low - The optional remote battery pack is low on
power and limited operating time remains. The
battery should be recharged for continued
operation.
Battery rqrs service - A problem has been detected in the optional
remote battery pack. The battery should be ser-
viced at an authorized GARMIN service center.
Cannot chng actv wpt - An attempt has been made to modify the position of
the ‘active to’ or ‘active from’ waypoint. The GNC
250 will not allow the modifications.
Cannot nav lockd rte - An attempt has been made to activate a route
containing a locked waypoint. The GNC 250
cannot perform navigation in this situation.
Cannot ofst goto rte - An attempt has been made to engage the offset
navigation feature while the GNC 250 is navi-
gating using a single waypoint route. The GNC
250 will not allow offset navigation in this
situation.
Checklist is full - The selected checklist is full. No new items can
be added until existing items are deleted.
Collecting data - The GNC 250 is collecting orbital data while
searching the sky. The antenna should have a
good view of the sky and the GNC 250 should
be allowed to finish data collection before turn-
ing the unit off.
COM failed - The comm in the GNC 250 has failed. Take the
unit to an authorized GARMIN service center
immediately.
86
SECTION
D
MESSAGES &
ABBREVIATIONS
Appendix D
GNC 250 Messages and Abbreviations
The GNC 250 uses the Message Page to communicate important information to you. Some mes-
sages are advisory in nature, others are warnings that may require your intervention. This appendix
provides a complete list of GNC 250 messages and their meanings.
250 real 7/14/98 9:33 AM Page 86