And goodness me too, caz! Knowing the cause of an accident before the BoI findings are published yet again? Old habits die hard I guess. For your interest the discussion has been about just that, ie SI/BoI's, and whether they truly provide for dependable results. I might also suggest that there may well be Airworthiness aspects to this accident, but we'll just have to wait and see what the real professionals in RAF Accident Investigation come up with, ie HM's Coroners!