The [[Boeing B-47]] was speed limited at low altitudes because the large, flexible wings would cancel out the effect of the control surfaces under some circumstances.{{Citation needed|date=February 2007}}
Due to the unusually high speeds thatat which the [[Supermarine Spitfire]] could be dived atdive, this problem of aileron reversal became apparent when it was wished to increase the lateral maneuverability (rate of roll) by increasing the aileron area. The aircraft had a wing designed originally for an aileron reversal airspeed of 580 [[Miles per hour|mph]], and any attempt to increase the aileron area would have resulted in the wing twisting when the larger ailerons were applied at high speed, the aircraft then rolling in the opposite direction to that intended by the pilot. The problem of increasing the rate of roll was temporarily alleviated with the introduction of "clipped" wing tips (to reduce the aerodynamic load on the tip area, allowing larger ailerons to be used) until a new, stiffer wing could be incorporated.{{Citation needed|date=January 2009}}
This new wing was introduced in the [[Supermarine Spitfire (late Merlin powered variants)#Mk.C2.A021_.28type_356.29|Mark XXI]] and had a theoretical aileron reversal speed of {{convert|825|mi/h|km/h|abbr=on}}.{{Citation needed|date=January 2009}}
