tucumseh & Brian Dixon,
Thank you both for your substantial and illuminating replies.
I hope that the Enquiry, whatever documentation they are able to peruse, will be able to conclusively come to the conclusion that the 'official' outcome of the RAFs proceedings is fatally flawed, having been 'interfered' with by self-important senior officers. The consequences of that should, hopefully, result in overturning the original verdict in this accident.
Such a result will, no doubt, be welcomed by family, friends and colleagues of the Chinook crew. I also feel that there are many who would hope that a result for justice would eventually lead to more - those senior officers having to account for their dishonest actions.