smiling_monkey;
Re, "you would still need to consider and analyze the flight and duty times of the crew prior to the accident to see if adequate rest had infact been given to the crew. "
Yes, exactly. Flying 130hrs stick time in a month is certainly conducive to long-term fatigue, (as opposed to the occasional really long duty day). A ten-hour day is normally a non-issue even in demanding conditions but not in a regime where monthly stick time is regularly scheduled to the 100hr+ range.