Garmin GTN 725 Pilot's Manual page 495

Message
APPROACH NOT
ACTIVE -
Do not continue
GPS approach.
AUDIO PANEL -
Audio panel needs
service.
AUDIO PANEL -
Audio panel is
inoperative or
connection to GTN
is lost.
CDI SOURCE -
Select appropriate
CDI source for
approach.
CDI/HSI FLAG -
Main lateral/
vertical flag
on CDI/HSI is
inoperative.
190-01007-03 Rev. D
Description
GPS approach could
not transition to active
(e.g., the GTN is on
an approach and did
not have the required
HPL/VPL to get into at
least LNAV, so is still in
TERM).
The GMA 35 is
reporting to the GTN
that it needs service.
The audio panel may
continue to function.
The GTN is configured
for Garmin audio panel
control (GMA 35)
and the GTN cannot
communicate with the
GMA 35. No control
of the GMA 35 will be
possible.
Aircraft is on a GPS
approach but CDI is set
to VLOC, or aircraft is
on VLOC approach and
CDI is set to GPS and
aircraft is less than 2
nm from the FAF.
The Main Lateral
Superflag or Main
Vertical Superflag
output has been turned
off due to an over-
current condition.
Garmin GTN 725/750 Pilot's Guide
Action
Abort the approach, and execute a
non-GPS based approach.
Contact dealer for service.
Remove power from the GMA 35
audio panel by pulling the circuit
breaker labeled "Audio." The pilot
will be able to communicate with
the Com 2 radio. Contact dealer
for service.
Select the appropriate CDI source
for approach.
Verify course guidance is valid
and correct by crosschecking with
the GTN on-screen CDI and other
navigational equipment. 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
17-3
Index