I agree with your post, Kinsman, except I don't think the AAIB is quite the organisation it was. I used to have great respect for it, but was involved some years ago in the periphery of a minor accident they reported. They stepped way outside their 'objective' brief, were a tad lazy in who they interviewed, and consequently put some stuff in the report that was biased and misleading and stemmed from 'blame deflection' by the one party interviwed against another who wasn't. If they'd stuck to fact and avoided opinion, that wouldn't have happened.