Maxi 101. Thanks for pointing out the reference. Having been involved in preparing the very first edition of the precursor to ATP56 it is interesting to see how little has changed since those early days and also that the RAF way of doing things is pretty much the worlds way now. At a meeting at Strike the difference between the RAF and the USAF was very apparent when a small change to ATP56 was suggested, the RAF reps, a W/C and two F/L's said ok, the two USAF Majors said this can only be sanctioned by a 2 star in the Pentagon, it went in.