A pokey little Cirrus 22 will easily do 150kias and its Va is 133. I can assure you that even at 120kias, using full elevator in the Cirrus will result in a rapid climb. Sure, in time it will stall, but not very quickly. Now imagine the wing loads at 150 when suddenly commanding full up elevator.
If you're straight and level, there's only 1G on the frame. When in a constant speed climb, there's only 1G on the plane. However, to get from S&L to that CS climb, you have to accelerate (change directions) and that loads the wing. If you are above Va and you do it too quickly or with too much authority, the frame goes ouch.
Last edited by AviatorTB; 11th Feb 2013 at 08:26.