I recall that Kaman lost an H-2 at the factory along with the crew of two test pilots and the cause was later determined to be nothing wrong with the machine, but that the copilots heel had become stuck in the floor opening for the cyclic on his side, thus jamming the control when the pilot moved the cyclic so as to trap the cyclic against the heel and against the opening edge. Perhaps the H-2 community can provide more detail-am I correct that it was some sort of speed run and they were both low and very fast?