For those towing behind tow planes equipped with ADS-B out (1090MHz), a new version of PowerFlarm firmware 6.67 is now available which should suppress the collision warning from the tow plane's ADS-B out. Below are release notes.

Version 6.67
Published 04 March 2019
Platforms Build Expiration
All PowerFLARM- and Classic FLARM-based devices a072808ac
Not operational after 31 October 2020
Changes since 6.63 Enhancements
 PowerFLARM: Suppress warnings from tow aircraft equipped with ADS-B Out, but not FLARM
 All: Info Alarms/traffic advisories in saturated situations are moderated such that they can no longer be mistaken as full traffic alarms

Thanks to Jerome at Flarm for working on providing this enhancement.

GC