The Boeing 707 is an American long-range narrow-body airliner produced by Boeing Commercial Airplanes, its first jetliner. Developed from the Boeing 367-80, a prototype flew in 1954, the initial 707-120 first flew on December 20, 1957. Pan American World Airways began regular 707 service on October 26, 1958. The airplane was built until 1979. A quadjet, the 707 has a swept wing with podded engines.