16-12
GTN 625/635/650 Pilot’s Guide
190-01004-03 Rev. P
Messages
Message
Description
Action
GPS RECEIVER -
Low internal clock
battery.
The GPS module
indicates that its clock
battery is low. Almanac
data may have been
lost. The unit will
function normally, but
may take a longer
than normal period to
acquire a GPS position.
Contact dealer for service.
GPS SEARCHING
SKY -
Ensure GPS
antenna has an
unobstructed view
of the sky.
The GPS module is
acquiring position and
may take longer than
normal. This message
normally occurs after
initial installation or if
the unit has not been
powered for several
weeks.
No action is necessary; message is
informational only.
GTN -
GTN needs service.
The GTN has lost
calibration data that
was set by Garmin
during manufacturing.
Contact dealer for service.
HOLD EXPIRED -
Holding EFC time
has expired.
The selected Expect
Further Clearance (EFC)
time for a user-defined
hold has passed.
No action is necessary; message is
information only.
HTAWS -
Invalid Terrain
Database.
The terrain database is
of insufficient resolution
for use with HTAWS.
Load HTAWS specific terrain
database on the external SD card.
INTERFACE
ADAPTER -
GAD 42
configuration
needs service.
GAD 42 indicates a
configuration error.
Verify all input/output data from/
to the GAD 42 Interface Adapter.
Contact dealer for service.
Summary of Contents for GTN 625
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