Hi BOAC
If your question regarding the LDZ on the Mull, and IMC approach techniques refers to something WK has posted, I have to tell you he has been on my Ignore List for some very considerable time now. I have no plans to change that. Life is too short, and this case too important.
IMHO there is not a chance that this accident was caused by any kind of approach to any landing site.
SFFP
I think many of us would accept that crew are more susceptible to inadvertent entry in to IMC over the sea than over land. This in and of itself, would not necessarily constitute negligence.
Your point about their high speed, bordering on it's maximum speed, at impact, is very well made. It is not recognisable as any kind of Chinook technique. As was mentioned by one of the reviewing officers on the basis of conversations he had had with a number of experienced Chinook pilots.