It is worth reminding ourselves that when Martin-Baker issued SIL704 after the accident, part of the reason was they were under new instruction from MoD to remove the assumption that RAF engineers would be adequately trained.
Hitherto, they had been instructed to assume a certain degree of training that would, for example, ensure maintainers didn't cut new thread and knew that the Drogue Shackle had to be free to move. The RAF Director of Flight Safety warned the Chief Engineer and ACAS about this very problem in 1992. That, maintainers were being held 'hostage to fortune'.