Boeing 707 lb (57.8 kN) with water injection. Maximum takeoff weight was 247,000 lb and first flight was on December 20, 1957. Major orders were the launch order for 20 707-121 aircraft by Pan Am and an American Airlines order for 30 707-123 aircraft. The first revenue flight was on October 26, 1958; 56 were built, plus seven short-bodied −138s; the last −120 was delivered to Western in May 1960. The 707-138 was a −120 with a fuselage 10 ft shorter than the others, with 5 ft (three frames) removed ahead and behind the wing, giving increased range. Maximum takeoff weight was
Transair (Canada) scheduled service on Canadian routes followed by the intercontinental version of the Boeing 707 a year later. The Boeing 707-320C was used strictly for charter flights, primarily to international destinations. By 1976 the scheduled route network extended throughout Canada from Toronto in the east to Whitehorse in the west with charter flights being operated to Europe, Mexico, the Caribbean, Hawaii, Florida and other destinations in the U.S. According to the February 1976 edition of the North American Official Airline Guide (OAG), Transair was operating daily scheduled service with either Boeing 737 or Fokker F28 aircraft direct between Toronto (YYZ) and