Originally Posted by III Corps

Yes but remember someone has to insure the airplane and I doubt an underwriter is going to sell a policy that does not address long range flights for a company operating a Global Express in its flight ops manual. And the flight ops manual will have to then have some crew duty limits. Violating your FOM is a great way to invalidate your insurance.

So, yes, it can be done at least on paper. But won't there be a refueling stop somewhere? Can the GE do 18+ hours? If not, that means customs, refueling, etc.. and an 18hr flt turns into 20hr+ trip. Not smart.