On Saturday, July 21, 2018 at 5:19:42 AM UTC+1, George Haeh wrote:
Flarm obtains aircraft data from GPS and an internal static pressure sensor. Speed would be calculated from GPS position change and possibly altitude change yielding either 2D or 3D groundspeed, not airspeed.

Possibly wind aloft could be estimated from changes in groundspeed on different tracks and used to produce an airspeed, but any gusts would make a hash of such an estimate.

If you download the igc file from the Flarm into a program such as SeeYou, you will get a decent estimate of both ground speed and airspeed, presumably the latter calculated from the GPS ground speed, allowing for density altitude. I am assuming that the investigator was able to do this.

I examined Renny's previous two logged flights in the V3 at Moriarty and he maintained air speeds in excess of 60 knots on the descent to landing.

Given the good handling characteristics of the V3, I find it hard to believe that an experienced pilot like Renny misjudged his approach and entered a stall/spin and that some degree of pilot incapacitation seems more likely.

However, rather than speculate with incomplete information, perhaps we should wait for the final report.

Mike