X-Plane is incredibly extensible. You can simulate new aircraft, make 3-D models, or even change the functionality of the program in drastic ways.
Gateway airports live in two locations in the X-Plane install folder: 3D airports live in Custom Scenery, while 2D airports live in Resources. X-Plane 11.33 now includes all airports in the Custom Scenery Global Airports folder.
This could cause issues with how your Custom Scenery pack displays. Read More