We have come a long way from Thread No 1 and indeed a long way (88 pages) on Thread 3.
Once again we seem to be going in circles over 'why' and 'how' and 'if' and we are going AWAY from the point of this whole thing which is that whether one conjectures that they were negligent or that they had some serious malfunction with the Chinook, it STILL remains that no-one, least of all the BoI, have ANY conclusive proof which enables a finding of negligence by the crew. That surely is the crux of the matter, and it is really of little interest, in trying to get the verdict overturned, whether there were 'Seals' with some arcane device, or whether they were squawking this or that or reading a particular DME - we will in all probability never know. Let's concentrate on getting the people who CAN do something about it to do it?
Perhaps Brian can post the address again so that those who have not yet written in to ask for a review of the findings can do so?