Garmin GNC 420AW GPS Receiver User Manual


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11 - MESSAGES
ABBREVIATIONS &
NAV TERMS
184
190-00356-00 Rev E
G/S is not responding — (GNS 430W only) Internal
system-to-system communication between the main proces-
sor and the glideslope receiver has failed. Operational status
of the glideslope receiver is unknown and the unit should
be returned to your Garmin dealer for service.
G/S needs service — (GNS 430W only) A failure in
the glideslope receiver has been detected. The glideslope
receiver may still be usable, but the unit should be returned
(at your earliest convenience) to your Garmin dealer for
service.
GAD configuration required — TheGAD42Interface
Adapter has lost the configuration information stored in its
internal memory. Any mechanical indicators connected to
your400W-seriesunitareunusableandtheGAD42should
be returned to your Garmin dealer for service.
GAD needs service — The 400W-series unit has detected
afailureintheGAD42interfaceadapter.Anymechanical
indicators connected to your 400W-series unit are unusable
andtheGAD42shouldbereturnedtoyourGarmindealer
for service.
GDL 69 is not responding — No data is being received
fromtheGDL69.Iftheproblempersists,contactyour
Garmin dealer for service.
GPS is not responding - Check GPS antenna — Inter-
nal system-to-system communication between the main
processor and the GPS receiver has failed. Operational
status of the GPS receiver is unknown and the unit should
be returned to your Garmin dealer for service after first
checking antenna connections or for a short in the antenna.
GPS needs service — The 400W-series unit has detected
a failure in its GPS receiver. The GPS receiver may still be
usable, but the unit should be returned (at your earliest
convenience) to your Garmin dealer for service.
Inside airspace — Your GPS-calculated position lies
within the boundaries of a special use airspace. This mes-
sage is automatically disabled within 30 NM of an arrival
airport, when an approach is loaded.
Invalid closest pt of FPL — A closest point cannot be
created from the waypoint entered on the “Closest point of
flight plan” window. This occurs when the selected way-
point is beyond the limits of all legs in the flight plan, too
far away, or when a unique waypoint name for the closest
point cannot be created.
Invalid FPL modification — An attempt was made to
modify the final course segment (FAF to MAP) of an instru-
ment approach. The 400W-series unit does not allow the
modifications.
Invalid waypoint ident — An attempt was made to
create a user waypoint with an invalid name. The 400W-
series unit does not allow spaces between characters in the
waypoint name.
Large magnetic variance — Verify all course angles
— A valid value of magnetic variation is not available for
this location. Check all course angles manually.
Loss of GPS Navigation - Use other NAV if available
— TheDeadReckoning annunciator appears on the left
side of the map display when GPS position is unavailable
andtheunitisinDeadReckoningmode.DeadReckoning
mode will continue until GPS position is restored. If there
is no flight plan, the message will only state “Loss of GPS
Navigation.”
Low Battery - Unit Needs Service —
Time data may
have been lost due to a memory battery failure.
MAIN processor requires service — The 400W-series
unit has detected a failure in the main system processor.
The 400W-series unit is not usable and should be taken to
your Garmin dealer for service.
Near airspace — less than 2 NM — Your GPS-calculated
position is within 2 NM of a special use airspace boundary,
but you are not projected to enter the airspace. This mes-
sage is automatically disabled within 30 NM of an arrival
airport, when an approach is loaded.
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