Forgice me if I'm hazy with the details, but it was [academic year] '00-'01 when I applied, but yes, four winners. Three pilots and one engineer.
Again, I'm a bit out of touch with the processes for a 6FS, having not looked into it in any serious way for about seven years, but I seem to recall that applicants for it no longer took part in the whole OASC, but a shortened segment. ie [something like], aptitude and hangar exercises only.