GPS for Pitot-Static calibration
Like a lot of other people, I'm using GPS a lot nowadays for pitot-static calibration work (particularly for ASI errors).
Personally I favour an into-wind / downwind racetrack method to determine mean TAS, and then all the sums from there. Others I know use an equilateral triangle course method, which I can see is more accurate but personally I don't favour since I don't consider the extra 0.2 of a knot or so of accuracy usually necessary.
I'm currently reading Dr John Lowry's book, "Light aircraft performance" where he uses a sort of horseshoe pattern which seems workable but to my mind far too damned fiddly.
What method is anybody else using, does anybody have a particular slant on the matter that others of us might learn from?
G