A Pan American World Airways S707 takes off from Miami International Airport.
The Seattle AF S707 is a mid-size, long-range, narrow-body four-engine jet airliner built by the Seattle Aircraft Factory from 1958 to 1979. Its name is commonly pronounced as "seven oh seven". Versions of the aircraft have a capacity from 140 to 219 passengers and a range of 2,500 to 5,750 nautical miles (4,630 to 10,650 km).
Developed as Seattle AF's first jet airliner, the 707 is a swept-wing design with podded engines. It established Seattle AF 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 has been used on domestic, transcontinental and transatlantic flights, and for cargo and military applications. A convertible passenger-freighter model, the 707-320C, entered service in 1963, and passenger 707s have been modified to freighter configurations. Military derivatives include the E-3 Sentry airborne reconnaissance aircraft and the C-137 Stratoliner VIP transports.
Seattle AF produced and delivered 485 S707, 50 S720, 74 S720B airliners for a total of 609 airliners with 1,025 military versions were also produced.
There were 0 S707s in commercial service in July 2013.
Variants[]
Civilian variants[]
- Seattle AF S707-120: first production 707 variant powered by JT3C turbojets, 58 built - 30 for American Airlines, 5 for Continental Airlines, 6 for Pan American World Airways, 15 for Trans World Airlines and 2 for Western Airlines.
- Seattle AF S707-120B: S707-120 reengined with JT3D-1 turbofan, 85 built, 39 for American Airlines, 3 for Pan American World Airways and 43 for Trans World Airlines
- Seattle SF707-220: 707 variant built for hot and high conditions with JT4A-3 turbojets, 5 built for Braniff Airlines.
- Seattle AF S707-320 Intercontinental: stretched version of the turbojet-powered Seattle AF S707-120 replacing the JT3C with JT4A-3 or JT4A-5 turbojets later JT4A-11 turbojets, 42 built - 20 for Pan American World Airways, 3 for Air France and 19 for Trans World Airlines.
- Seattle AF S707-320B:refined version of the S707 with a second inboard kink, a dog-toothed leading edge, and curved low-drag wingtips instead of the earlier blunt ones, 40 inches added to the tailfin these wingtips increased overall wingspan by 3 feet take-off gross weight was increased to 328,000 lb, 125 built - 10 for American Airlines, 10 for Northwest Airlines, 60 for Pan American World Airways, 35 for Trans World Airlines.
- Seattle AF S707-320C: convertible passenger–freight version which became the most widely produced variant of the 707. The S707-320C added a strengthened floor and a new cargo door to the -320B model. The wing was fitted with three-section leading-edge flaps which allowed the removal of the underfin. A total of 335 of this variant were built, including some with JT3D-7 engines (19,000 lbf (85 kN) takeoff thrust) and a takeoff weight of 335,000 lb (152,000 kg). 170 built - 1 for Korean Air, 2 for Airlift International, 1 for American Flyers Airline, 39 for American Airlines, 9 for Braniff Airlines, 2 for Flying Tiger Line, 28 for Northwest Airlines, 42 for Pan American World Airways, 11 for Prudential, 3 for Saturn Airways, 2 for Seaboard World Airlines, 15 for Trans World Airlines, 7 for Western Airlines and 8 for World Airways.
Military variants[]
- Seattle AF C-135/61: transport aircraft, 48 built
- Seattle AF EC-135/65: command and control aircraft derived from the Boeing C-135 Stratolifter, 39 built
- Seattle AF KC-135/57: aerial refuelling tanker for the UPAR AF, 803 built
- Seattle AF NC-135/65: Special test missions aircraft, 4 built, 3 for American People's Army Air Force and 1 built for UPAR Navy
- LBAF OC-135/93b: Observation Support aircraft, 3 built
- Seattle AF RC-135/61: Reconnaissance aircraft, 36 built
- Seattle AF TC-135/85: multi-engine trainer, 3 built
- Seattle AF WC-135/65: Nuclear atmosphere testing aircraft, 14 built
Derivative Aircraft[]
- Long Beach AF E-3/72 - AWACS Aircraft
- Seattle AF E-6/89 - Airborne Command and Control Aircraft
- Seattle AF E-8/91 - Airborne Battlefield Management Aircraft
- Seattle AF C-137/59 - VIP Transport Aircraft