flipster
May I refer you to the written signed statement (sworn on oath), given to the BoI a few days after the tragedy, by the Yachtsman in which he states that his position was 2 NM SW of the Mull (and that the the visibility was 1 NM limited by haze) when the Chinook passed him en route to quote " the mass of orographic cloud obscuring the Mull." unquote.
To the contributor who pointed out that the Chinook was at a height that was normal for SH I would point out that this was NOT a SH sortie. It was a routine Passenger Transit Flight utilising SH assets. Whilst a high speed low level transit was right and proper on departure towards the coast, the weather forecast required (as stated by the Investigating Board in their report) "flight in accordance with IFR in the vicinity of the Mull of Kintyre". The BOI also stated quite specifically that the icing clearance would have permitted flight in accordance with IFR in the vicinity of the Mull. This requirement was not complied with - with tragic results.