Garmin GTN 725 Cockpit Reference Manual page 74

Message
KNOB STUCK-
Volume knob is stuck in
the pressed position.
KNOB STUCK-
Dual concentric inner
knob is stuck in the
pressed position.
LOCKED FLIGHT PLAN-
Cannot activate a
fl ight 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).
66
Description
The volume knob has
been in a pressed position
for at least 30 seconds.
This knob press will now
be ignored.
The dual concentric
inner knob has been in
a pressed position for
at least 30 seconds. This
knob press will now be
ignored.
The user is trying to
activate a fl ight plan
that contains a locked
waypoint.
The GPS module has
reported a loss of
integrity.
MagVar is fl agged 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.
GTN 725/750 Cockpit Reference Guide (CRG)
Action
Verify the volume knob is
not pressed. Contact dealer
for service if this message
persists.
Verify the dual concentric
knob is not pressed. Contact
dealer for service if this
message persists.
Unlock the fl ight plan by
modifying stored fl ight 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.
No action is necessary;
message is informational
only.
190-01007-04 Rev. C