The initial production version of the Boeing 707 makes its first flight.

Boeing 707

Four-engined single-aisle airliner family by Boeing

The Boeing 707 is an early American long-range narrow-body airliner, the first jetliner developed and produced by Boeing Commercial Airplanes. Developed from the Boeing 367-80 prototype, the initial 707-120 first flew on December 20, 1957. Pan Am began regular 707 service on…