Responding to Twinact
Quite possibly, or at least similarly bizarre reports. To put this one to bed: even if there is an aircraft like Aurora and it does fly at speeds as high as Mach 8, such speeds would not be achievable at anywhere near the Chinook's operating altitude. Further, if, as the article states, Machrahanish might be being used as an operating base for the Aurora, the aircraft would certainly need to have slowed down to somewhere near landing speed by the time it was flying over the Mull area. Finally, if the shockwave from this aircraft were severe enough to throw a Chinook operating at low altitude from the sky, the Aurora's existence would certainly no longer be a secret as it would be causing all sorts of mayhem over a very wide area.
For a more credible long-odds outsider, I would go for a meteorite striking one or both of the pilots, but there are already sufficient other possible technical defects that cast sufficient doubt to render the negligence finding 'beyond any doubt whatsoever' completely untenable.