Garmin GTN 625 Cockpit Reference Manual page 72

Message
MAGNETIC
VARIATION -
Aircraft in area
with large mag var.
Verify all course
angles.
MARK ON
TARGET -
Waypoint creation
has failed. MOT
requires GPS
position.
NAV ANGLE -
NAV Angles are
referenced to True
North (T).
NAV ANGLE -
NAV Angles are
referenced to a
User set value (U).
NON-WGS84
WAYPOINT -
See CRG. Location
may be different
than where
surveyed for [WPT].
OBS -
OBS is not
available due to
dead reckoning or
no active waypoint.
64
Description
MagVar is flagged
as unreliable in the
MagVar database.
This normally occurs
when operating at high
latitudes that do not
support a Nav Angle of
Magnetic.
Mark on target
waypoint creation
has failed because of
missing GPS position.
Nav angle is set to True. No action is necessary; message is
Nav angle is set to User. No action is necessary; message is
The active waypoint is not
referenced to the WGS84
datum.
See Note 1 at the
beginning of the table.
OBS requires an active
waypoint and is not
supported in dead
reckoning mode.
GTN 625/635/650 Cockpit Reference Guide (CRG)
Action
Verify that the geographical region
supports navigation based on
magnetic variation.
Wait for GPS satellite geometry to
improve. Ensure the aircraft has a
clear view of the sky. Reattempt
waypoint creation. Contact dealer
for service.
informational only.
informational only.
No action is necessary; message is
informational only.
No action is necessary; message is
informational only.
190-01004-04 Rev. G