I was intrigued by the every growing list of airports in Aerofly's airport database. So I clobbered together a quick visualization:
My first approach made my browser a stuttering mess, but after some fiddling with MapBox I would like to present to you:
The map is now part of the Missionsgerät, and can be used without actually entering a flight plan. So if you are on the go and like to know if an airport exists in AFS4, here you go.