The full approval for the Triadis can be read at:

http://www.ukiws.demon.co.uk/GFAC/approvals/triadis.pdf



To claim approval for the Display Unit is incorrect and misleading.
A Butterfly Vario installation always consists of Integrated Sensor Unit (ISU, small box also including all sensors and the triadis RU3 flight recorder) and the Display unit.

There have been many multi-subsystem installations with IGC-Flight Recorders in the past, e.g. Zander, LX, CAI, and this is just another one. What is misleading?

Thanks
Marc