Probably an inflight breakup which the 210 is renowned for.
Do you have any stats to back up that statement GG?
I can only think of one (maybe two) inflight breakup of a C210 in Oz (Cloncurry), but I can also recall an inflight breakup of a Beech 200 yet the King Air doesn't have the same reputation as the C210.
CBs and/or loss of control will break them all up eventually!