73
190-01007-04 Rev. K
GTN 725/750 Cockpit Reference Guide
Me
ssage
s
Message
Description
Action
DATALINK -
GDL 88
ADS-B is
not transmitting
position. Check
GPS devices.
The GDL 88 has
detected a position
input fault.
Contact dealer for service.
DATALINK -
GDL 88
configuration
module needs
service.
The GDL 88
has detected a
configuration module
fault.
Contact dealer for service.
DATALINK -
GDL 88
control
input fault. Check
transponder is in
correct mode.
The GDL 88 has lost
communication with the
transponder.
Contact dealer for service.
DATALINK -
GDL 88 is
inoperative or
connection to GTN
is lost.
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.
Contact dealer for service.
DATALINK -
GDL 88 needs
service.
GDL 88 has detected an
internal fault.
Contact dealer for service.
DATALINK -
GSR 56 data
services
inoperative;
registration
required.
The GSR 56 is not
registered. GSR
Weather, Position
Reporting, and Phone
Services will be
unavailable.
Contact dealer for service.
