The big skydiving boogie up in Quincy, Illinois used to have the "D. B. Cooper" jump. They had a 727 cargo plane with the airstair removed and a plywood bulkhead with a jump door installed. They could take something like 200 skydivers up, but they had to go out one at a time.
The story I heard was that some skydivers got too eager and jumped during the climb (250 kts) instead of the jump run (~120 kts). Their harnesses survived but their jump-suits were blasted clean off!