Am I correct that crews were separate for VC-10 and 707, and indeed on the Comet beforehand as well, if anyone goes that far back ?
This being so, I wonder how some of the long line, multi-stop, different stopping pattern every day of the week routes, particularly round across the Pacific far from base, managed when the occasional schedule transition was made from 707 to VC-10 or vice-versa. Having a different set of slip crews in place from the changeover day must have been a huge exercise.