Chinook
I have only read details of the Chinook crash in the press. I was on duty at Kinloss on the day of the accident and have been troubled by my recollections of the weather on the day for some time now. As I recall it was a very strong SSE airflow with extensive low cloud. I assume this much was already brought out at the enquiry.
My point is that such flows through the North Channel tend to be stronger than predicted. Could this have had an effect on where the crew thought they were and if there was a stronger wind could it have been possible that were further north than they were led to believe.
What bearing this has on the Navigation kit on the Chinook I have no idea. Might be nothing.