17-26
GTN 725/750 Pilot’s Guide
190-01007-03 Rev. Q
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
Index
Message
Description
Action
VNAV -
Unavailable.
Excessive track
angle error.
Current track angle
error exceeds limit,
causing vertical path
guidance to become
invalid.
Navigate within 70° of active flight
plan course.
VNAV -
Unavailable.
Parallel course
selected.
Selecting a parallel
course causes vertical
path guidance to
become invalid.
Disable parallel track if vertical
path guidance is desired.
VNAV -
Unavailable.
Barometric altitude
lost.
A loss of data from
the barometric altitude
sensor causes vertical
path guidance to
become invalid.
Contact dealer for service.
WAYPOINT -
Arriving at [wpt
name].
User has configured
the arrival alarm and
is within the specified
distance.
No action is necessary; message is
informational only.
WX ALERT -
Possible severe
weather ahead.
The weather radar
system is indicating
the presence of severe
weather ahead.
Check weather radar. See
section 12.4.7.2 for more
information.
WX RADAR FAIL -
Weather radar is
inoperative.
The GTN is configured
for a weather radar but
is not receiving data
from it. Weather Radar
will not be displayed on
the GTN.
Contact dealer for service.
WX RADAR
SERVICE -
Weather radar
needs service.
Return unit for
repair.
Weather radar is
reporting a system
fault.
Contact dealer for service.
Table 17-1 Messages