Garmin GTN 750 Pilot's Manual page 377

Message
LOCKED FLIGHT
PLAN
Cannot activate
a flight plan
containing a locked
waypoint.
LOSS OF
INTEGRITY (LOI)-
Verify GPS
position with
other navigation
equipment.
MAGNETIC
VARIATION -
Aircraft in area
with large mag var.
Verify all course
angles.
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].
190-01007-03 Rev. B
Description
The user is trying to
activate a flight plan
that contains a locked
waypoint.
The GPS module has
reported a loss of
integrity.
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.
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 end of
the table.
Garmin GTN 725/750 Pilot's Guide
Action
Unlock the flight plan by modifying
stored flight plans as necessary
to include waypoints, procedures,
and airways that are in the current
navigation database.
Use a different GPS receiver
or a non-GPS based source of
navigation. Contact dealer for
service if this message persists.
Verify that the geographical region
supports navigation based on
magnetic variation.
informational only.
informational only.
No action is necessary; message is
informational only.
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Music
Utilities
System
Messages
Symbols
Appendix
17-11
Index