Boeing 707 center section tanks. Its first flight was on January 11, 1958; 69 turbojet 707-320s were delivered through January 1963, the first passengers being carried (by Pan Am) in August 1959. The 707-420 was identical to the −320, but fitted with Rolls-Royce Conway 508 (RCo.12) turbofans (or by-pass turbojets as Rolls-Royce called them) of 18,000 lb (79 kN) thrust each. The first announced customer was Lufthansa. BOAC's controversial order was announced six months later, but the British carrier got the first service-ready aircraft off the production line. The British Air Registration Board refused to give the aircraft a certificate of airworthiness,
Longest flights hours, 35 minutes westbound. In January 2016, the start was postponed to March 31, 2016. In early March 2016, Emirates postponed the route until the end of 2016 or early 2017 or "as soon as conditions allow." , no further information has been given on the potential route. In April 2017, Qatar Airways announced that it will begin flying between Doha and San Francisco in 2018. The airline will use Boeing 777-300ER aircraft on the route. Delta has announced that it will resume nonstop flights from the United States to Mumbai in 2019. While the origin of the flight has