Alert Text
Data transfer cancelled
(crossfill is busy)
Data transfer cancelled
(data invalid)
Data transfer cancelled
(version mismatch)
Data transfer error,
please
re-transmit
Display backlight failure The 500W Series unit has detected a
Do not use for
navigation
G/S has failed
(530W only)
G/S is not responding
(530W only)
G/S needs service
(530W only)
GDL 69 is not
responding
GDL 88 ADS-B traffic
has failed
GDL 88 Traffic Alerting
not available
GDL 88 Connection
has been lost
500W Series
Instructions for Continued Airworthiness Bell 206B
Possible Cause
An attempt to transfer flight plan data
during a unit-to-unit crossfill was
cancelled.
An attempt to transfer a single user
waypoint during a unit-to-unit crossfill
was cancelled. No waypoint was
specified on the Crossfill Page.
An attempt to transfer data during a
unit-to-unit crossfill was cancelled.
The database versions of the two
500W-series unit are not identical.
An error was detected during unit-to-
unit crossfill of user data (user
waypoints and/or flight plans).
failure in the display backlighting.
The 500W Series unit is in Demo
Mode and must not be used for actual
navigation.
The unit has detected a failure in its
glideslope receiver.
Internal system-to-system
communication between the main
processor and the glideslope receiver
has failed. Operational status of the
glideslope receiver is unknown.
The unit has detected a failure in its
glideslope receiver. The glideslope
receiver may still be usable.
No data is being received from the
GDL 69.
The GDL 88 is reporting that it has a
problem processing ADS-B traffic
data. The traffic picture may be
degraded.
The GDL 88 is reporting to the GTN
that the CSA application has failed.
Traffic alerting on ADS-B traffic is
unavailable.
The GNS unit cannot communicate
with the datalink
Solution
The host unit is busy. Wait
until any previous crossfill
operation is complete, before
reattempting the transfer.
Select a user waypoint and re-
attempt the transfer.
If necessary, update the
database(s) so they match.
The data transfer should be
re-attempted.
Contact Garmin technical
support.
Check that the DEMO MODE
SELECT pin, P5001 Pin 75, is
not connected.
Contact Garmin technical
support.
Contact Garmin technical
support.
Contact Garmin technical
support.
Check for proper configuration
Check wiring
Contact Garmin technical
support.
Refer to the GDL 84H/88H
STC Installation Manual.
Ensure the aircraft has a clear
view of the sky. If problem
persists contact Garmin
technical support.
Check for proper configuration
Ensure the GDL 88 is
powered up
Check wiring
Check the GDL 88 status
page in Aux mode
190-01226-03 Rev. 5
Page 15 of 23
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