N649UA — Twin-engine aircraft

The photo shows a large twin-engine commercial jet in flight viewed from below against a clear blue sky. It carries a United Airlines livery with a white upper fuselage, dark blue lower fuselage and engine nacelles, and a blue-striped tail; the registration N649UA is visible on the aft fuselage. The aircraft has underwing turbofan engines and upward-swept winglets, and the landing gear is retracte