GRT Avionics

I never thought about the system being set up in Kts and MPH I will check that out. Airplane has a back up IAS way over on the right side of the panel and it reads the same as the EFIS but maybe it is MPH?? Thanks for the idea and I will let you know what I find.

I have done almost exactly the flight you described. I used the EFIS to match ground track and heading which should put me either straight into or with the wind. at a heading of 295 I had TAS 150 and Ground Speed of 136. Then turn 180 degrees and to 115 and I had TAS 148 and ground speed of 173. Ave...

I am having an issue with the air speeds and the GPS ground speed matching up and making sense in my Velocity. I purchased the airplane in November 2013 and I started noticing that I always had a head wind. I did the True Air Speed calibration on the EFIS and it changed the TAS value and It now make...