33 weeks? How the heck do they fill the time in? I enlisted at OCTU, RAF Feltwell on 23nd September 1964, and was commissioned on 16th December. That works out as 12 weeks. The aircrew equivalent (at South Cerney, IIRC) was 16 weeks, but they had to be taught how to do sums. I could already do them, so I didn't miss the extra four weeks