Last time I was in the USA I noticed a very tidy 172 sitting in a hangar and spoke to a mechanic about it. He explained that they were awaiting a report on it's structural integrity and whether or not it was a write-off. Apparently it was hit by a micro burst while airborne and had been flipped inverted. I was shown how the whole aircraft was out-of-true and the many cracks on the wings and fuselage. The pilot, who owned the aircraft, got it checked out straight away, if it were a rented aircraft maybe this wouldn't have happened and may still be flying. Ok, this had been a pretty sudden (maybe violent) manoeuvre but it shows that the commonal garden runaround Cessna/Piper is not that strong when it comes to "aerobatics".