S*it happens - I remember vividly the night of 12 Sept 1974, my first JATFOR I think it was called. I think the outcome was reported as something to do with temp inversions (utter ball*cks).
As for, should they shouldn't they - having qualified at both Basic 1973 and MFF, with my latest MFF refresher 1998. They were the best, most professional courses I have ever done with the RAF and that includes CFS
(1989).
Outdated - I don't think so. Expensive yes.