Sabena from Seaboard World Airlines, using them mainly on transatlantic routes. In the same period, there were experiments with helicopter passenger service using Sikorsky S-58 aircraft from Brussels to Antwerp, Rotterdam, Eindhoven and the Paris heliport at Issy-les-Moulineaux. 1960 saw the introduction of the Boeing 707-320 intercontinental jet for trans-Atlantic flights to New York. SABENA was mainland Europe's first airline to operate a jet across the Atlantic (BOAC had been flying jet transatlantic services using the de Havilland Comet 4 since 4 October 1958). One of Sabena's aircraft became the first Boeing 707 to crash while in commercial service when Flight
Boeing Field Calgary, Alberta in Canada. West Coast, which had its headquarters in the Seattle area and operated all of its flights from Boeing Field, merged with Pacific Air Lines and Bonanza Air Lines to form Air West (which was later renamed Hughes Airwest) with these successor air carriers continuing to serve Seattle via Boeing Field with DC-9 jets and F-27 propjets until Hughes Airwest moved all of its flights to Seattle-Tacoma International Airport in 1971. Aeroamerica, an airline based at Boeing Field from 1971 to 1982 which operated Boeing 707 and Boeing 720 jetliners, flew nonstop service at one point to