Is it possible to convert a Xplane addon aircraft to Aerofly fs 2? Or is it only with scenery possible?
Krzysztof Kaniewski made a converter for some basic aircraft a long time ago. It mainly concerted the 3d model and textures and created a simplified aircraft that could be loaded in Aerofly FS.
But it still required quite a bit of work for each aircraft after that initial setup. It's not a quick process because a lot of the aircraft systems are custom coded and even though you can copy paste a lot from other aircraft no converter knows all possible aircraft systems and therefore you have to manually program all systems.
That's where scenery and aircraft differ. Scenery just has to look good where as aircraft also need a custom physics model, custom systems, custom cockpit interactions, custom sounds etc.
But I think I'm not good enough to programm every system.