Garmin GTN 725 Pilot's Manual page 503

Message
DATA SOURCE -
Radar Altimeter
source inoperative
or connection to
GTN lost.
DEMO MODE -
Demo mode is
active. Do not use
for navigation.
FPL WAYPOINT
LOCKED -
Stored flight plan
waypoint is not in
current navigation
database.
FPL WPT MOVED -
Stored flight plan
waypoint has
changed location.
GLIDESLOPE -
Glideslope receiver
needs service.
GLIDESLOPE -
Glideslope receiver
has failed.
190-01007-03 Rev. D
Description
The GTN is configured
to receive radio altitude
information but is not
receiving it from any
source.
The GTN is in Demo
Mode and must not
be used for actual
navigation.
A stored flight plan
waypoint is no longer in
the current navigation
database.
A stored flight plan
waypoint has moved
by more than 0.33 arc
minutes from where
previously positioned.
The glideslope board is
indicating that it needs
service. The glideslope
board may continue to
function.
The glideslope board
is not communicating
property with the
system.
Garmin GTN 725/750 Pilot's Guide
Action
50 foot aural annunciation
is unavailable for HTAWS
installations. Contact dealer for
service.
Do not use for navigation. Power
cycle the GTN to exit demo mode.
Also ensure that the Direct-To key
is not stuck.
Verify stored cataloged flight plans
and procedures. Modify stored
flight plans as necessary to include
waypoints that are in the current
navigation database.
Verify stored cataloged flight plans
and procedures. Modify stored
flight plans as necessary to include
waypoints that are in the current
navigation database.
Verify glideslope deviation
indications with another source
and crosscheck final approach
fix crossing altitude. If another
glideslope source is not available
for verification, fly a GPS based
approach. Contact dealer for
service.
Fly an approach that does not use
the glideslope receiver (VOR, LOC,
GPS). Contact dealer for service.
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
17-11
Index