17-15
190-01007-03 Rev. D
Garmin GTN 725/750 Pilot’s Guide
Foreword
Getting
Started
Audio &
Xpdr Ctrl
Com/Nav
FPL
Direct-To
Proc
Charts
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
Message
Description
Action
LOCKED FLIGHT
PLAN
Cannot activate
a flight plan
containing a locked
waypoint.
The user is trying to
activate a flight plan
that contains a locked
waypoint.
Unlock the flight plan by modifying
stored flight plans as necessary
to include waypoints, procedures,
and airways that are in the current
navigation database.
LOSS OF
INTEGRITY (LOI)-
Verify GPS
position with
other navigation
equipment.
Antenna may be
shaded from satellites.
The GPS module has
reported a loss of
integrity.
Make sure the aircraft is clear of
hangars, buildings, trees, etc. Use
a different GPS receiver or a non-
GPS based source of navigation.
Contact dealer for service if this
message persists.
MAGNETIC
VARIATION -
Aircraft in area
with large mag var.
Verify all course
angles.
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.
Verify that the geographical region
supports navigation based on
magnetic variation.
MARK ON
TARGET
-
Waypoint creation
has failed. MOT
requires GPS
position.
Mark on target
waypoint creation
has failed because of
missing GPS position.
Wait for GPS satellite geometry to
improve. Ensure the aircraft has a
clear view of the sky. Reattempt
waypoint creation. Contact dealer
for service.
NAV ANGLE -
NAV Angles are
referenced to True
North (T).
Nav angle is set to True. No action is necessary; message is
informational only.
NAV ANGLE -
NAV Angles are
referenced to a
User set value (U).
Nav angle is set to User. No action is necessary; message is
informational only.
Summary of Contents for GTN 725
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