blind squirrel
not doubting the wisdom of one with such a nomenclature, but primarily for my own education, could you give the source which covers such a range of coverage, and the specific reference flights and dates of those three?
how long ago was the one over the mountain in Japan? I think it was a DC-8?
and to this event itself, the turbulence need not be much at all to break an ankle. a slight loss of balance whist reaching to put something in an overhead compartment. a broken ankle can be done at home, misjudging the last step going up or downstairs to toilet. ankles are like all our other joints. amazingly strong in most events, but just a slight off angle, they all have serious weak spots.