Piedmont Hawthorne with 34 Fixed Base Operations located throughout the nU.S. and Canada is headquartered in Winston-Salem, NC. Piedmont Hawthorne has over 70 years of experience in general aviation and is one of the oldest continuously operating general aviation companies in the world. Piedmont Hawthorne's services include ground support and fueling; aircraft charter and management; aircraft maintenance, avionics sales and installation and aircraft sales including jets, turbo-prop and piston aircraft.