FAA to JAA
Actually, you aren't exempt from the 14 written exams. I am currently studying for Human Performance and Aviation Law. I have 21000 hours and fly for a major U.S. carrier. With these two written exams passed and a check ride you qualify for a limited JAA ATPL to fly UK registered aircraft only. To have an unrestricted JAA you have to pass all 14 written exams, as well as a check ride.