A different system
This is interesting. In my experience at the similar base, albeit a while ago, fast jet staff officers from HQs around France would come down to fly their allocated 12 hours (I think) per year. Some of these Abonnés or attached pilots would instruct and be useful to the Sqn, others would take a jet and head off. I'm not sure the system has changed that much and the pilots need to fly to keep their flying pay by French law. It also keeps a stock of pilots relatively current in flying at least and, God forbid, might motivate them to stay in their rubbish staff job knowing they can escape and slip the surly bonds as part of flying that desk.