I'm guessing you're currently in a JEngO position or similar.
Airline maintenance management tends to be by people with the relevant licences themselves who have come up from the shop-floor - the nearest equivalent to what you know would be SNCO posts. So, the odds are against you there unless you've got civil licences.
With a degree and RAF experience, I'd suggest that your best bet is to get your CEng before you leave, and aim for an analytical type management role - for example product support and development with somebody like BAE/WHL/L-M, or areas like maintenance support / QA in an operating environment.
G