I did my first aerobatic - upset training today and the instructor was explaining to me how in a banked dive when attempting to pull up, the "up wing" is loaded with about 50% more G's than the lower wing. He went on to explain how in most accidents where a plane breaks up in the clouds, they usually find the outboard last 3 feet of one wing, about two miles back in the flight path. This because when the pilot tries to pull up and out of his dive/spin, the up wing usually break away at the end due to the over-G.
The insturctor knows his stuff, and trains upset for both the Army and Navy.
I asked him then if he had read the Skymaster crash in NJ, which he said he did. His opinion was that it was a banked turn / pull up that over stress the higher wing.
Meanwhile upset training was the most fun I've had in years
