Getting back to the topic of the thread, I can only think of four prior instances in the past 15 years where a large jet airliner fell out of the sky without any communication from the crew and the cause was not ultimately linked to third party interference. In all four cases icing or some recoverable technical fault led to a complete loss of control due to a lack of basic airmanship. Two of these happened in Indonesia... (and NO, I'm not speaking of Lionair). Just saying...