Thanks...I agree that it all looks quite straightforward for the PPL, according to the MOS. What I'm having trouble with is the RPL: if you look at the MOS outline of the theory there doesn't seem to be a nav module in the exam (understandably, I guess). Reading on, there is a practical nav endorsement for the RPL, but again no mention of any nav theory. If that's actually the case, it looks a bit odd relative to, say, the RAA route to an RPL (and indeed an endorsed RAA pilot certificate) where applicants will, presumably, have been required to do a nav exam. But it's late, and maybe I'm missing something.