I'm still of the opinion that a contributing factor was the withdrawl of radar from Macrihanish a month or so before the tragic accident.
Had a radar service been available from Macrihanish, they might not have had to fly VMC below and could have climbed above icing and safety altitude in IMC. Was this ever discussed at the BOI?
But then, I'm only a retired controller who worked on Odiham Radar for many years including those when Chinooks were in service from their introduction so who am I to comment?