I visited the Carlisle air museum (several very interesting exhibitions in the museum by the way) last year and went over to the airport to have a look round. There was an RAF SeaKing crew in having some lunch, they were on their way to an air show, as was the Utterly Butterly wing-walking team - quite a novelty to see them. The bar area is underneath the control tower and everybody seemed friendly enough. If you go into the "beer garden" you get a very good view of the runway and also the approaches. I had a look in the window of the terminal and it was so quaint! There are 3 (I think) check in desks, maybe half a dozen baggage trolleys and 4 or so proper airport bench seats. It's like somebody has shrunk a terminal to fit inside the portable building. Unfortunately since there were no commercial flights operating I couldn't get a closer view but I would imagine the facilities would have to be upgraded if a regular passenger service became a reality.