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Altitude input fail - The altitude serializer input is not available for the
GNC 300. Check the I/O settings and/or the serial-
izer installation. If enough satellites are available for
a 3D position fix, no pilot action is required, pro-
viding no RAIM warnings are present. 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.
Appr switch stuck - The GPS APR switch is stuck in the ‘pressed’ posi-
tion. Check the installation.
Approach deleted - The selected approach was deleted from the route
because not enough room existed to insert a SID
or STAR.
Approach not active - The approach could not transition to the active
phase because the GPS SEQ switch is set to the
HOLD position, the approach has been manually
disarmed using the GPS APR switch, the automatic
CDI scale is not selected or offset navigation is in
effect. Do not descend at the FAF.
Arm approach - Approach navigation is available. Press the GPS
APR switch to re-arm the approach.
Arrival at _____ - Your craft has entered the arrival alarm circle for the indi-
cated waypoint.
Arrvl at offst _____ - Your craft has entered the arrival alarm circle for
the indicated waypoint offset by the parallel track
distance.
Auto CDI slctd - The GNC 300 has reset the CDI scale to the AUTO
setting to permit approach navigation.
Auto leg seq slctd - The GNC 300 has reset the automatic leg sequenc-
ing option to the ON setting to permit approach
navigation.
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 300 will
not allow the modifications.
109
GETTING
STARTED
Status & Position
SECTION
D
MESSAGES &
ABBREVIATIONS
Appendix D
GNC 300 Messages and Abbreviations
The GNC 300 uses the message page to communicate important information to you. Some messages are
advisory in nature, others are warnings that may require your intervention. This appendix provides a complete
list of GNC 300 messages and their meanings.
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