Garmin GTN 650 Series Pilot's Manual Upgrade Supplement page 113

Message
DATALINK -
GDL88 ADS-B
fault. Pressure
altitude input is
invalid.
DATALINK -
GDL88 ADS-B
traffic has failed.
DATALINK -
GDL88 CSA failure.
DATALINK -
GDL88 external
traffic system
inoperative or
connection lost.
DATALINK -
GDL88 external
traffic system has a
low battery.
DATALINK -
GDL88
configuration
module needs
service.
DATALINK -
GDL88 needs
service.
GTN 650/750 Series SW V3.00 Upgrade Supplement 190- 01007-05 Rev A
Description
The GDL 88 has lost
communication with
the pressure altitude
source.
GDL 88 may have lost
GPS position.
The GDL 88 has
detected an internal
failure.
The GDL 88 is reporting
to the GTN that the
CSA application has
failed. Traffic alerting
on ADS-B traffic is
unavailable.
The GDL 88 has
detected a TAS/TCAS
input fault.
The GDL 88 is reporting
that the external traffic
system has a low
battery.
The GDL 88
has detected a
configuration module
fault.
GDL 88 has detected
an internal fault.
Action
Contact dealer for service.
Contact dealer for service.
Ensure the aircraft has a clear view
of the sky. If the problem persists.
Contact dealer for service.
Contact dealer for service.
Contact dealer for service.
Contact dealer for service.
Contact dealer for service.
107