Garmin and ForeFlight Looking into ADS-B Challenges

Firmware ‘compatibility issue’ is being blamed for recent traffic display interruptions.

Meg Godlewski

Wednesday, August 09, 2023 at 05:47 PM ET

Verified

ForeFlight and Garmin are presently working together to fix the issue.

Key Takeaways:

A compatibility issue between ForeFlight Mobile and Garmin GNX 375 GPS navigators (firmware v3.13 and later) can temporarily interrupt or disable the display of ADS-B traffic in ForeFlight.
This problem, confirmed by both ForeFlight and Garmin, is more noticeable in high-traffic environments and affects only the ForeFlight display when connected to the affected GNX 375 units.
ForeFlight and Garmin are actively working on a solution, with a firmware update for the GNX 375 expected to be available in September 2023 to correct the issue.

See a mistake? Contact us.

The aircraft passed off our right— not terribly close, as we saw it and avoided it with ease. But we had a mystery: Why didn’t the ADS-B give us an announcement?

The answer came this week in the form of an email from ForeFlight that stated “the ForeFlight and Garmin teams identifying ‘a compatibility issue’ between ForeFlight and recent firmware versions (v3.13 and later) of Garmin’s GNX 375 GPS navigator and ADS-B In/Out transponder.” According to the email, “the issue can temporarily interrupt or disable the display of ADS-B traffic in ForeFlight Mobile while connected to this device.”