FAA exemption 4050 allows a single pilot to operate a US registered Citaion 550/560 type (Citation II, SII, Citation V). The conditions are that the permit is valid only in USA airspace in a US registered aircraft...
....Other countries do not see it the same way, MOST countries issue the equivilent of the FAA 4050 with no restrictions.
That's very informative.
I would be very interested to hear if "MOST countries" includes
any of the EASA states.