CM, I'm not sure if we are in violent agreement or disagreement. When you say:-
I am simply saying that the Boards/Panels (esp the one in this case) have gone as far as they can.
is that because they are simply doing what they are told rather than determining the accident cause no matter what, or that given their limited access to evidence (because they are not made aware of it, or it is simply denied them) they can do no more?
Either way it is a waste of time and resource in my book, and fails in its principal purpose, ie to prevent a recurrence.