Vne etc.
Pure curiosity, but how are the assorted V_speeds derived?
Some are obviously just measured (stall, best rate of climb etc.), but how are things like Va, Vfe and Vne worked out - I kind of doubt you chaps are up there going 100 kts, full control deflection, wings still there ... 105 kts, full control deflection, ah, there they go... scribble down Va, jump out...