Having an out of date licence does not make one immediately incapable. It would seem that the McCrea accident was a case of flying in conditions beyond one's ability. The problem with the Chinook accident was that the aircraft hit a mountain at high speed for no apparent reason. It was in controlled flight at the time of impact, there is no evidence of any mechanical malfunction. So, once again the question is, what were they doing at that position, at that speed and in those conditions? The aircraft was not inverted, no 'rudder' valves had stuck, the engines were working with no fadec problems and there were no little green men present. They shouldn't have been there.