Chugalug
I think you might find that there are more than a few people in the "Chain of Command" below MOD, STC and Gp level who are keeping a constant lookout "above and behind" for the "incoming". It is the Supervisors at Station and Squadron level who must ensure that their Units fully comply with the rules and regulations in the same way as OC Accounts must make the Books balance.
As a QFI, and later as a Flt Instructor/Examiner and IRE on 32 Sqn, I knew that I had to be completely sure in respect of the authorisations I signed for others to do their Tasks - if I had any doubts then I would NOT authorise them. The whole system, however, depends on trust - I brief and authorise and I TRUST that person to abide by his/her brief and authorisation.
Sadly, there is little one can do to prevent an idiot from exceeding the brief if they are minded so to do without thought for the potential consequences.