On another forum there were photographs posted from an aircraft travelling North to Oban, at the time of the incident. Over the Firth of Clyde, as he passed PIK, there was a large bank of sea fog. Not sure how further West it travelled, but it appeared pretty extensive. The route North was pretty overcast, with breaks. If these guys had to ditch, it would be difficult coming through a low level fog bank. As Maoraigh1 states, await the report. I was only stating a geographical point regarding mountains. DO, appreciate Goat Fell, but that is Arran, not the Mull.