Luftwaffe 707-307C, 10+03 August Euler at the Santa Barbara Airport for a Tracor/Shannon Quiet 707 package conversion on November 4, 1986. The Road To The 707, The Inside Story of Designing the 707, William H. Cook1991. As a derivative, the 720 had low development costs, allowing profitability despite few sales. The 720 was succeeded by the Boeing 727 trijet. Qantas ordered a shorter-bodied version called the 707-138, which was a -120 with six fuselage frames removed, three in front of the wings, and three aft. For example, Pan American World Airways was assigned code "21". The seven -138s were delivered to Qantas between June and September 1959, and first carried passengers in July of that year. The 505 model would have had a fuselage 45 feet (14 m) longer than the 707-320B and would have carried 209 passengers in mixed-class configuration and 260 passengers in all-economy configuration. Pan American ordered these planes, when and as they did, so that they would be the operators of the "first-off" production line for each aircraft type. NATO E-3A Sentry, LX-N90442 at Edwards Air Force Base on October 24, 2003. The 707 production line remained open for purpose-built military variants until 1991, with the last new-build 707 airframes built as E-3 and E-6 aircraft. The -120B had the wing modifications introduced on the 720 and a longer tailplane; a total of 72 were built, 31 for American and 41 for TWA, plus six short-bodied -138Bs for Qantas. The Air Force acquired it as C-18A 81-0896 on July 20, 1982. Boeing E-8C J-STARS 02-9111 of the 116th Air Control Wing based at Robins Air Force Base, Georgia at Davis-Monthan Air Force Base on April 15, 2012. It had a revised wing with three-sectioned leading-edge flaps, improving takeoff and landing performance and allowing the ventral fin to be removed (although the taller fin was retained). It was one of two 707-353Bs used by the Air Force to transport the president. The E-8C is distinguished by a 26-foot long canoe-shaped radome under the forward fuselage. It had a revised wing with three-sectioned leading-edge flaps, improving takeoff and landing performance and allowing the ventral fin to be removed (although the taller fin was retained). It was powered by the Pratt & Whitney JT3C turbojet engine, the civilian version of the J57 used on many military aircraft, including the F-100 Super Sabre fighter and the B-52 bomber. Most -320Cs were delivered as passenger aircraft with airlines hoping the cargo door would increase second-hand values. Boeing E-8C J-STARS 02-9111 Pride of Lake Charles of the 116th Air Control Wing based at Warner Robins Air Force Base, Georgia at Davis-Monthan Air Force Base on April 13, 2012. The design was being pitched to American, TWA, BOAC, and Pan Am at the time of its proposal in early 1965. One great difference was in the width and length of the fuselage. [16] Takeoff weight was increased to 302,000 lb (137,000 kg) initially and to 312,000 lb (142,000 kg) with the higher-rated JT4As and center section tanks. With the maximum takeoff weight the same as that of the -120 (247,000 lb (112 t)), the -138 was able to fly the longer routes that Qantas needed. The 175 707-320B aircraft were all new-build; no original -320 models were converted to fan engines in civilian use. [46][47][48] The deadliest incident involving the 707 was the Agadir air disaster which took place on August 3, 1975 with 188 fatalities. It was transferred to the Egyptian government the following month. Reverse thrust may also be used to increase the rate of descent. Pan American ordered these planes, when and as they did, so that they would be the operators of the "first-off" production line for each aircraft type. The Boeing 707 is a narrow-body airliner produced by Boeing Commercial Airplanes, its first jetliner. The company had produced innovative and important bombers, from the B-17 Flying Fortress and B-29 Superfortress, to the jet-powered B-47 Stratojet and B-52 Stratofortress. Thus, a 707-320B sold to Pan Am had the model number 707-321B. It carries Boeing construction number 30137 and first flew on April 8, 2000. Small changes in longitudinal trim are made with the use of trim tabs on the elevators. At the time, nearly all of Boeing's revenue came from military contracts. The main landing gear consists of two struts to which are mounted four-wheel bogies. The 506 model would have had a fuselage 55 feet (17 m) longer than the 707-320B and would have carried 225 passengers in mixed class configuration and 279 passengers in all economy configuration. 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