16-8
GTN 625/635/650 Pilot’s Guide
190-01004-03 Rev. P
Messages
Message
Description
Action
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.
DATALINK -
GSR 56 is
inoperative or
connection to GTN
is lost.
The GTN is configured
for a Garmin GSR 56
and the GTN cannot
communicate with the
GSR 56. GSR Weather,
Position Reporting, and
Phone Services will be
unavailable.
Close the GSR 56 circuit breaker
and ensure the GSR 56 is receiving
power. Contact dealer for service.
DATA LOST -
Pilot stored data
was lost. Recheck
settings.
User settings such as
map detail level, nav
range ring on/off, traffic
overlay on/off, and alert
settings have been lost.
Recheck settings.
Summary of Contents for GTN 625
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