Ah the Dash4a in the J saga, what a SNAFU that was. Dash 4a rails being butchered to fit out of tolerance airframes. Aircraft being flown without structurally important bolts etc.
Oh and by the way Skydel wasn't Beverley it was Argosy, Britannia, VC 10, Andover as well as K Herc and funnily enough shared a common origin with Dash4a - yes Dash4a and Skydel are as old as each other.
I believe that the RAFs J should have had ECHS from the start going for Dash4a was as backward a step as Skydel.