Boeing 707 ushering in the Jet Age. It established Boeing as one of the largest manufacturers of passenger aircraft, and led to the later series of airliners with "7x7" designations. The later 720, 727, 737, and 757 share elements of the 707's fuselage design. The 707 was developed from the Boeing 367-80, a prototype jet first flown in 1954. A larger fuselage cross-section and other modifications resulted in the initial-production 707-120, powered by Pratt & Whitney JT3C turbojet engines, which first flew on December 20, 1957. Pan American World Airways began regular 707 service on October 26, 1958. Later derivatives included the
Pan American World Airways Board (CAB) took towards the promotion of competition between major U.S. carriers on key domestic and international scheduled routes compared with pre-war U.S. aviation policy. AOA was the first airline to begin regular landplane flights across the Atlantic, on October 24, 1945. In January 1946 Pan Am scheduled seven DC-4s a week east from LaGuardia Airport, five to London (Hurn airport) and two to Lisbon. Time to Hurn was 17 hours 40 minutes including stops, or 20 hours 45 minutes to Lisbon. A Boeing 314 flying boat flew LaGuardia to Lisbon once every two weeks in 29 hours 30 minutes;