Garmin GTN 625 Pilot's Manual page 560

Message
Foreword
VCALC -
Getting
Arriving at VCALC
Started
target altitude.
Audio &
Xpdr Ctrl
Com/Nav
VISUAL
APPROACH NOT
FPL
ACTIVE -
Approach guidance
Direct-To
not available when
requesting
Proc
direct-to runway.
VLOC RECEIVER -
Wpt Info
Navigation receiver
Map
has failed.
Traffic
VLOC RECEIVER -
Navigation receiver
Terrain
needs service.
Weather
VNAV -
Nearest
Unable to reach
vertical waypoint.
Services/
Music
Utilities
VNAV -
Unavailable.
System
Upcoming flight
plan leg not
Messages
supported.
Symbols
Appendix
Index
16-24
Description
User has configured
a vertical descent
calculation, and the
aircraft is approaching
the target altitude.
Visual approach could
not transition to
active. Guidance is not
available.
The nav radio is
not communicating
property with the
system.
The nav radio is
reporting to the GTN
that it needs service.
The nav radio may
continue to function.
Current altitude
constraint cannot be
reached based on
current ground and
vertical speeds.
The lateral flight plan
contains a procedure
turn, vector, or other
unsupported leg type
prior to the active
vertical waypoint.
GTN 625/635/650 Pilot's Guide
Action
No action is necessary; message is
informational only.
Reactivate the approach or cancel
the Direct-To course.
Use GPS based navigation. Contact
dealer for service.
Use GPS based navigation. Contact
dealer for service.
Attempt to intercept vertical path
by adjusting aircraft altitude.
Treat the flight plan segments
before and after the affected leg as
separate vertical profiles. The GTN
cannot provide automatic guidance
between the two segments.
190-01004-03 Rev. P