Mmmm ....
Subtle correction to the above post ....
Whilst FAA regulations (copied with some 'variations') are the basis for for licensing and Flight activities within the KSA ... 'Temporary Airman Certificates' can be issued to well qualified (not necessarily FAA licensed) Airman/Mechanics to allow flight operations on Saudi civilian registered aircraft.
It is necessary to take the GACA nominated exam in order obtain a permanent Saudi Airman Certificate (and yes it is based on the FAA exam syllabus ... with variations?).
(I guess somebody has to be seen to be running the show?).