The idea for FL290-FL410 is more to have a designated "highway" of sorts, where all craft are flying within the same system. There is no requirement for auto-pi

The idea for FL290-FL410 is more to have a designated "highway" of sorts, where all craft are flying within the same system. There is no requirement for auto-pilot above FL410, for example... There are plenty of jets that can easily get that high, it's more about aerodynamics and engineering than pilot skill. http://www.flyingmag.com/whats-41000-feet http://www.flyingmag.com/whats-41000-feet