Thanks Blue Robin.

The flight model was developed from my CFS3 version which in turn was developed using many different tools and sources…. Excel worksheets, Aircraft Airfile Manager (AAM), Naca reports, published accounts of the Biff’s flying characteristics and feedback from the CFS3 version’s beta testers, one of whom had some hours in a Tiger Moth. Of course one can never have enough information. Pilot’s notes would have been useful, and of course, feedback from someone who had flown the real thing.