the aircraft struck the side of Gunung Pike Mountain on approach to Wamena Airport and burst into flames.
That's it then.
Case closed.
Cancel the AAIB!
Was it the 'mountain' the 'airport' or the 'flames' that led you too such an insightful conclusion??
What we don't know is why it hit the mountain.
It sounds like captainspeaking and Teddy know.
Personally I prefer this kind of approach:
Why? We don't know why the aircraft crashed; we don't know if it was an aircraft or system failure or pilot error. In many crashes the crew are just passengers in the final stage.
Does it sound familiar CS?