US validation ???

[future G-V driver]

Is there anyway someone can get a Validation from the FAA, off the back of their JAA ATPL to fly an aircraft (N reg) on a private op. Type rated on aircraft over 12,500 lbs (G550)

Rather than sit ATP, flight test etc.

Thank you in advance for any help and how to go about it.

[S-Works]

nope. You will get a 61.75 certificate restricted to private flight and non commercial activity VFR only. If you take the IFP written you will get an IR. If you want commercial/ATP then you take the writtens and check ride.

[pilotbear]

just do the ATP written, it is easy using the Gleim CD.
Then do the FAA/ATP checkride on the type rating at the same time as the JAA. Can all be done in one check-ride. This gives you an FAA ATP based on your 'foreign licence'.