Garmin GTN 625 Cockpit Reference Manual page 71

Message
TRUE NORTH
APPROACH-
Verify NAV Angles are
referenced to True North
(°T).
VERTICAL
CALCULATOR-
Approaching target
altitude. Start descent.
VERTICAL
CALCULATOR-
Approaching target
altitude.
VLOC RECEIVER-
Navigation receiver
needs service.
VLOC RECEIVER-
Navigation receiver has
failed.
WAYPOINT-
Arriving at [wpt name].
NOTE 1: There are several reference datums that waypoints can be surveyed against.
TSO-C146 normally requires that all waypoints be referenced to the WGS84 datum,
but allows for navigation to waypoints that are not referenced to the WGS84 datum
so long as the pilot is notified. Certain waypoints in the navigation database are not
referenced to the WGS84 datum, or their reference datum is.
190-01004-04 Rev. E
Description
A procedure is loaded
that is referenced to true
north and the active leg
has a published true north
reference.
User has configured
a vertical descent
calculation, and the
aircraft is within 60
seconds of the calculated
top of descent.
User has configured
a vertical descent
calculation, and the
aircraft is approaching the
target altitude.
The NAV radio is reporting
that it needs service. The
NAV radio may continue
to function.
The NAV radio is not
communicating property
with the system.
User has configured the
arrival alarm and is within
the specified distance.
GTN 625/635/650 Cockpit Reference Guide (CRG)
Action
Verify the NAV Angle is set
to True North.
No action is necessary;
message is informational
only.
No action is necessary;
message is informational
only.
Use GPS based navigation.
Contact dealer for service.
Use GPS based navigation.
Contact dealer for service.
No action is necessary;
message is informational
only.
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