Boeing’s 707 was the world’s third jetliner type to enter service – following the British Comet and Soviet Tu-104 – but the American machine truly set the template for the Jet Age, as Charles Kennedy explains

While famous for its bombers, Boeing also made inroads during the golden age of the propliner. It built 83 airframes of the Model 40, a four-seat biplane, in the 1920s and then 83 ten-seat B-247s, a twin-engined all-metal monoplane that operated the first transcontinental passenger flights not requiring an overnight hotel stop.