Garmin GTN 625 Reference Manual page 80

Message
KNOB STUCK -
Volume knob
is stuck in the
pressed position.
LOCKED FLIGHT
PLAN
Cannot activate
a flight plan
containing a locked
waypoint.
LOSS OF
INTEGRITY (LOI)-
Verify GPS
position with
other navigation
equipment.
MAGNETIC
NORTH
APPROACH -
Verify NAV angles
are referenced
to magnetic
north (magnetic
variation).
MAGNETIC
VARIATION -
Aircraft in area
with large mag var.
Verify all course
angles.
70
Description
The Volume knob
has been in pressed
position for at least
30 seconds. This knob
press will now be
ignored.
The user is trying to
activate a flight plan
that contains a locked
waypoint.
Antenna may be
shaded from satellites.
The GPS module has
reported a loss of
integrity.
The NAV angle is not
set to Magnetic and a
magnetic approach is
loaded.
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.
GTN 625/635/650 Cockpit Reference Guide
Action
Verify the volume knob is not
pressed. Contact dealer for service
if this message persists.
Unlock the flight plan by modifying
stored flight plans as necessary
to include waypoints, procedures,
and airways that are in the current
navigation database.
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.
Change NAV angle setting to
Magnetic.
Verify that the geographical region
supports navigation based on
magnetic variation.
190-01004-04 Rev. N