[IvanK]

there was very little diff on each run in the order of +- 2Mph max IAS as far as I could interpolate on the ASI. Each run was flown like a precision Instrument Flying exercise.... actually better than the +-50ft tolerance I quoted.

I will do some runs as requested with Boost cutout as well. Same for the Hurricane test which I have just posted as well.

Distance covered over the ground would provide Ground Speed. Working back to get TAS might be an issue as we really dont know the atmospheric model. I know the QNH is accurate but the base Sea level temperature is based on OAT with a static observation of the OAT gauge. In other tests at various altitudes in climb and descent (I was trying to map the lapse rates used in the CLOD atmosphere) I was getting some very strange OAT values ... to the point I gave up.