400W Series
190-01226-14 Rev. 3
Instructions for Continued Airworthiness Bell 407
Page 19 of 26
Alert Text
Possible Cause
Solution
Data transfer cancelled
(version mismatch)
An attempt to transfer data during a
unit-to-unit crossfill was cancelled.
The database versions of the two
400W-series unit are not identical.
If necessary, update the
database(s) so they match.
Data transfer error, please
re-transmit
An error was detected during unit-to-
unit crossfill of user data (user
waypoints and/or flight plans).
The data transfer should be re-
attempted.
Display backlight failure
The 400W Series unit has detected a
failure in the display backlighting.
Contact Garmin technical
support.
Do not use for navigation
The 400W Series unit is in Demo
Mode and must not be used for
actual navigation.
Check that the DEMO MODE
SELECT pin, P5001 Pin 75, is
not connected.
G/S has failed
(420W and 430W only)
The unit has detected a failure in its
glideslope receiver.
Contact Garmin technical
support.
G/S is not responding
(420W and 430W only)
Internal system-to-system
communication between the main
processor and the glideslope
receiver has failed. Operational
status of the glideslope receiver is
unknown.
Contact Garmin technical
support.
G/S needs service
(420W and 430W only)
The unit has detected a failure in its
glideslope receiver. The glideslope
receiver may still be usable.
Contact Garmin technical
support.
GDL 69 is not responding
No data is being received from the
GDL 69.
Check for proper configuration
Check wiring
Contact Garmin technical
support.
GDL 88 ADS-B traffic has
failed
The GDL 88 is reporting that it has a
problem processing ADS-B traffic
data. The traffic picture may be
degraded.
Refer to the GDL 84H/88H STC
Installation Manual.
GDL 88 Traffic Alerting not
available
The GDL 88 is reporting to the GTN
that the CSA application has failed.
Traffic alerting on ADS-B traffic is
unavailable.
Ensure the aircraft has a clear
view of the sky. If problem
persists contact Garmin
technical support.
GDL 88 Connection has
been lost
The GNS unit cannot communicate
with the datalink
Check for proper configuration
Ensure the GDL 88 is powered
up
Check wiring
GDL 88 ADS-B transmit has
failed
The GDL 88 is not able to transmit an
ADS-B message due to a failure with
the GDL 88 system or antenna(s)
Check the GDL 88 status page
in Aux mode
Refer to the GDL 84H/88H STC
Installation Manual
GDL 88 ADS-B is not
transmitting position
The GDL 88 has detected a position
input fault
Refer to the GDL 84H/88H STC
Installation Manual
GDL 88 ADS-B fault - Check
GDL 88 Status Page
The GDL 88 has detected an
equipment fault
Check the GDL 88 status page
in Aux mode
Refer to the GDL 84H/88H STC
Installation Manual
Summary of Contents for 400W Series
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