Garmin GNC 420AW GPS Receiver User Manual


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11 - MESSAGES
ABBREVIATIONS &
NAV TERMS
181
190-00356-00 Rev E
Section 11
Messages, Abbreviations, and
Navigation Terminology
Messages
The 400W-series unit uses a flashing “MSG” annunciator
at the bottom of the screen (directly above the MSG key) to
alert you of any important information or warnings. While
most messages are advisory in nature, warning messages
may require your intervention.
Whenever the “MSG” annunciator flashes, press the
MSG key to display the message, when pilot workload
allows. Press MSG again to return to the previous page.
The following is a list of available messages and their
meanings:
ABORT APPROACH — Loss of Navigation — Execute
missed approach using other navigation equipment.
Airport terrain database integrity error — The
400W-series unit has detected a problem with a database
on the Terrain data card. The message “<database name>
database integrity error” indicates the data base in error.
The data is not usable and the card should be returned to
your Garmin dealer.
Airspace ahead — less than 10 minutes — Your GPS-
calculated course is projected to enter a special use airspace
within 10 minutes. This message is automatically disabled
within 30 NM of an arrival airport, when an approach is
loaded.
Airspace near and ahead — Your GPS-calculated
position is within 2 NM of the boundary of a special use
airspace and your course is projected to enter the airspace
within 10 minutes. This message is automatically disabled
within 30 NM of an arrival airport, when an approach is
loaded.
All data referenced to True North — the unit’s Heading
modehasbeensetto“True”intheAUXSetuppages
.
Approach downgraded — Use LNAV minima — This
message will occur 60 seconds prior to the FAF if flying
LNAV+V,L/VNAV,LP,orLPVapproachesandWAAS
integrity parameters have fallen below minimal limits. As a
result,verticalguidancehasbeendiscontinuedandtheLPV,
LNAV+V,orL/VNAVapproachyouwereyinghasbeen
downgraded.
Approach is not active — The approach could not transi-
tionto“active”,at2NMorclosertotheFAF.Verifythat
“SUSP”DOESNOTappeardirectlyabovetheOBS key,
indicating the auto waypoint sequencing is suspended.
Approaching target altitude — The current GPS-com-
putedaltitudeiswithin500feetofthenalVerticalNaviga-
tion target altitude.
Approaching VNAV profile — You are within one minute
ofreachingtheinitialVerticalNavigationdescentpoint.
APR Guidance Available - Use PROC before A/P APR
— For units configured with the KAP140 or KFC225
autopilot, this message reminds pilots, when they turn
on course to the FAF, that they need to enable autopilot
outputs (by pressing PROC and selecting “Enable A/P APR
Outputs?”) before switching the autopilot control panel to
APR.
Arrival at waypoint [waypoint name] — You are within
the arrival alarm circle for the indicated waypoint. The size
ofthearrivalalarmcircleisdenedfromthe“CDI/alarms”
menu option on the Setup Page.
Aviation database integrity error — The 400W-series
unit has detected a problem with a database on the
NavData
®
card. The message “<database name> database
integrity error” indicates the data base in error. The data is
not usable and the card should be returned to Jeppesen or
your Garmin dealer for service.
Bad geometry, parallel offset not activated — parallel
offset is not activated because of flight plan geometry.
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