I have managed to build terrain on the sceneries using TerraGear GUI on these airports:
OMAA Abu Dhabi
OJAI Amman
OIIE Tehran IKA airport
OOMS Muscat
OMAA:
https://photos.google.com/photo/AF1QipMOLEU2IdePuuR6C9fkkCNuOWPeh_zXxr1Oscvu
OJAI:
https://photos.google.com/photo/AF1QipP5aOvYSnoD9rGee597n4KeFhbQXfQtpWRR417g
OIIE:
https://photos.google.com/photo/AF1QipNtWl59ks7YPmhI-Cwpoq7PytUScR04-165FzKj
OOMS:
CLOSED
The postion on the runway are weird