Garmin GTN 725 Cockpit Reference Manual page 69

Message
DATALINK-
GDL 69 is inoperative
or connection to GTN
is lost.
DATALINK-
GDL 88 is inoperative
or connection to GTN
is lost.
DATALINK-
GDL 88 ADS-B failure.
Unable to transmit
ADS-B messages.
DATALINK-
GDL 88 ADS-B fault.
DATALINK-
ADS-B fault: UAT
receiver.
DATALINK-
ADS-B fault: 1090
receiver.
DATALINK-
GDL 88 ADS-B not
transmitting position.
Check GPS devices.
190-01007-04 Rev. D
Description
The GTN is configured for
a Garmin datalink (GDL
69 or 69A) and the GTN
cannot communicate with
the datalink. Data from
the datalink will not be
available.
The GTN is configured
for a Garmin datalink
(GDL 88) and the GTN
cannot communicate with
the datalink. Data from
the datalink will not be
available.
GDL 88 is not able
to transmit an ADS-B
message due to a failure
with the GDL 88 system
or antenna(s).
The GDL 88 has detected
a fault with one of
the GDL 88 UAT/1090
antennas.
The GDL 88 has detected
a UAT receiver fault.
The GDL 88 has detected
a 1090 receiver fault.
The GDL 88 has detected
a position input fault.
GTN 725/750 Cockpit Reference Guide (CRG)
Action
Contact dealer for service.
Contact dealer for service.
Contact dealer for service.
Contact dealer for service.
Contact dealer for service.
Contact dealer for service.
Contact dealer for service.
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