Garmin GTN 725 Cockpit Reference Manual page 79

Message
APPROACH NOT
ACTIVE -
Do not continue
GPS approach.
APR GUIDANCE
AVAILABLE -
Press "Enable APR
Output" before
selecting APR on
autopilot.
AUDIO PANEL -
Audio panel is
inoperative or
connection to GTN
is lost.
AUDIO PANEL -
Audio panel needs
service.
CDI/HSI FLAG -
Main lateral/
vertical flag
on CDI/HSI is
inoperative.
CDI SOURCE -
Select appropriate
CDI source for
approach.
190-01007-04 Rev. L
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 GTN is configured for
KAP140/KFC225 autopilot,
and approach guidance is
now available.
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.
The GMA 35 is reporting
to the GTN that it needs
service. The audio panel
may continue to function.
The Main Lateral Superflag
or Main Vertical Superflag
output has been turned
off due to an over-current
condition.
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.
GTN 725/750 Cockpit Reference Guide
Action
Abort the approach, and execute a non-
GPS based approach.
Press the "Enable APR Output" key on
the GTN, this will cause the autopilot
to go into ROL mode. Engage the
autopilot into approach mode.
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.
Contact dealer for service.
Verify course guidance is valid and
correct by crosschecking with the GTN
on-screen CDI and other navigational
equipment. Contact dealer for service.
Select the appropriate CDI source for
approach.
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