I remember reading an article in one of the aviation magazines,maybe Air Forces Monthly? which seemed to indicate that the nav gear (Tans) could have been in error by several hundred yards,as to waypoint,selection of next track,etc, which may have led the crew to think they had further to go before changing track.Therefore ,they(the crew) did not consider(supposition-of course) that they were as close to the Mull as they actually were. I did actually fly past the Mull on the day,low -level,and could see it was covered in cloud ,at least the top half,but vis underneath was good-earlier in the afternoon,on a low-level sortie to Lossie.As an ex-FSO(1Gp) I find it very hard to reconcile that the Senior Officers should have come to the conclusion regarding negligence as they did,as I had a lot of respect for both.
