The structural certification standard never envisioned rapid reversals of the flight controls. Va does not imply a strength criteria, it merely is the point at which the wings stalls at the G limit, thus relieving the wing loading. No plane is tested for rapid reversals; similarily asymmetric G load limits are published for FA 25 aircraft, but the exact.
GF
Last edited by galaxy flyer; 28th September 2013 at 03:57.