Garmin MX20 - Page 126

Problem Possible Cause Action
LINK flag FIS Sensor
Installation
Ensure that the FIS
unit is installed and
functional.
XPDR flag TIS-A Sensor
Installation
Ensure that the TIS-A
unit is installed and
functional.
ADSB flag GDL 90 is reporting
that its internal GPS
is not reporting a
position or is reporting
an invalid position.
Note that ADS-B
broadcasts do not
include position
reports when this flag
is present.
Ensure the GDL 90 is
installed and
functional. Ensure the
GDL 90 GPS antenna
has a clear view of
the sky to receive
GPS signals.
IDENT (green) flag This is not a problem.
This flag appears
when the GDL 90 is in
the Ident mode.
None required.
See the Installation Manual for additional troubleshooting
procedures.
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Detailed Operation