Also interesting if it doesn't come out of beta. IIRC this happened down south once.
I do recall once seeing the other Porter with a slightly bent and crumpled fuselage from a heavy landing , is that the same incident ?
I didn't see too much of Jim's Porter , it came to SA once and they 'demonstrated' their 10,000fpm 'dive of death' and then leveling off at 2,000' and flying a circuit so they actually took longer to get down. It looked pretty cool though , that porter would circle a formation of skydivers on the way down.
I also asked some engineers and they said the PT6A-20 wasn't designed for 90 deg descent.