Garmin GTN 625 Pilot's Manual page 508

Message
Foreword
VLOC RECEIVER -
Getting
Navigation receiver
Started
needs service.
Audio &
Xpdr Ctrl
WAYPOINT -
Com/Nav
Arriving at [wpt
FPL
name].
Direct-To
Proc
Note 1:
Wpt Info
Map
Traffic
Terrain
Weather
Nearest
Services/
Music
Utilities
System
Messages
Symbols
Appendix
Index
16-24
Description
The nav radio is
reporting to the GTN
that it needs service.
The nav radio may
continue to function.
User has configured
the arrival alarm and
is within the specified
distance.
Table 16-1 Messages
There are several reference datums that waypoints can be surveyed against.
TSO-C146 normally requires that all waypoints be referenced to the WGS84
datum, but allows for navigation to waypoints that are not referenced to the
WGS84 datum so long as the pilot is notified. Certain waypoints in the navigation
database are not referenced to the WGS84 datum, or their reference datum is
unknown. If this is the case, this message is displayed. Garmin cannot determine
exactly how close the non-WGS84 referenced waypoint will be to the WGS84
datum that the GTN uses. Typically, the distance is within two nautical miles.
The majority of non-WGS84 waypoints are located outside of the United States.
Garmin GTN 625/635/650 Pilot's Guide
Action
Use GPS based navigation. Contact
dealer for service.
No action is necessary; message is
informational only.
190-01004-03 Rev. K