john smith wrote:
Dudley, don't misunderstand me.
Hoover (an a limited number of others) are special circumstances.
Everything I have read stated that the Shrike was a stock airplane.
I don't recall that Hoover ever spins in the airplane.
The video of the roll while pouring a glass of water is sure a hoot,
though!
As I said in my post, in the right hands, some maneuvers not approve by
the manufacturer can in fact be performed safely.

I believe that Bob also said at one airshow that he never stressed the
Shrike beyond its certification load limits. As someone said earlier,
it often isn't the aerobatic maneuver itself that stresses the airframe,
it is the botched maneuver or the recovery from a botched maneuver where
the extra strength is needed. Obviously, Mr. Hoover doesn't have to
worry about that. :-)


Matt