Boeing 707-321C
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The Boeing 707 is an American, long-range,
narrow-body airliner A narrow-body aircraft or single-aisle aircraft is an airliner arranged along a single aisle, permitting up to 6-abreast seating in a cabin less than in width. In contrast, a wide-body aircraft is a larger airliner usually configured with mult ...
, the first
jetliner A jet airliner or jetliner is an airliner powered by jet engines (passenger jet aircraft). Airliners usually have two or four jet engines; three-engined designs were popular in the 1970s but are less common today. Airliners are commonly clas ...
developed and produced by Boeing Commercial Airplanes. Developed from the
Boeing 367-80 The Boeing 367-80, known simply as the Dash 80, is an American quadjet prototype aircraft built by Boeing to demonstrate the advantages of jet propulsion for commercial aviation. It served as basis for the design of the KC-135 tanker and the 70 ...
prototype first flown in 1954, the initial first flew on December 20, 1957.
Pan American World Airways Pan American World Airways, originally founded as Pan American Airways and commonly known as Pan Am, was an American airline that was the principal and largest international air carrier and unofficial overseas flag carrier of the United States ...
began regular 707 service on October 26, 1958. With versions produced until 1979, the 707 was a swept wing,
quadjet A four-engined jet, sometimes called a quadjet, is a jet aircraft powered by four engines. The presence of four engines offers increased power, allowing such aircraft to be used as airliners, freighters, and military aircraft. Many of the firs ...
with
podded engine A podded engine is a jet engine that has been built up and integrated in its nacelle. This may be done in a podding facility as part of an aircraft assembly process. The nacelle contains the engine, engine mounts and parts which are required to r ...
s. Its larger fuselage cross-section allowed six-abreast economy seating, retained in the later 720, 727, 737, and
757 757 may refer to: * Boeing 757: a narrow-body airliner * AD 757: a year * 757 BC: a year * 757 (number): a number * Area code 757 Image:Area code 757.png, The area colored red indicates the southeast corner of Virginia served by area code 757 po ...
models. Although it was not the first commercial jetliner in service, the 707 was the first to be widespread and is often credited with beginning the
Jet Age The Jet Age is a period in the history of aviation defined by the advent of aircraft powered by jet turbine engines, and by the social change this brought about. Jet airliners were able to fly much higher, faster, and farther than older pisto ...
. It dominated passenger air transport in the 1960s, and remained common through the 1970s, on
domestic Domestic may refer to: In the home * Anything relating to the human home or family ** A domestic animal, one that has undergone domestication ** A domestic appliance, or home appliance ** A domestic partnership ** Domestic science, sometimes c ...
, transcontinental, and
transatlantic flight A transatlantic flight is the flight of an aircraft across the Atlantic Ocean from Europe, Africa, South Asia, or the Middle East to North America, Central America, or South America, or ''vice versa''. Such flights have been made by fixed-wing air ...
s, as well as cargo and military applications. It established Boeing as a dominant airliner manufacturer with its 7x7 series. The initial, was powered by Pratt & Whitney JT3C turbojet engines. The shortened long-range and the more powerful entered service in 1959. The longer range, heavier 707-300/400 series have a larger wing and are stretched slightly by . Powered by
Pratt & Whitney JT4A The Pratt & Whitney J75 (civilian designation: JT4A) is an axial-flow turbojet engine first flown in 1955. A two-spool design in the 17,000 lbf (76 kN) thrust class, the J75 was essentially the bigger brother of the Pratt & Whitney J57 ...
turbojets, the 707-320 entered service in 1959, and the with
Rolls-Royce Conway The Rolls-Royce RB.80 Conway was the first turbofan engine to enter service. Development started at Rolls-Royce in the 1940s, but the design was used only briefly, in the late 1950s and early 1960s, before other turbofan designs replaced it. ...
turbofans in 1960. The 720, a lighter short-range variant, was also introduced in 1960. Powered by
Pratt & Whitney JT3D The Pratt & Whitney JT3D is an early turbofan aircraft engine derived from the Pratt & Whitney JT3C. It was first run in 1958 and was first flown in 1959 under a B-45 Tornado test aircraft. Over 8,000 JT3Ds were produced between 1959 and 1985. M ...
turbofans, the 707-120B debuted in 1961 and the 707-320B in 1962. The 707-120B typically flew 137 passengers in two classes over , and could accommodate 174 in one class. With 141 passengers in two classes, the 707-320/420 could fly and the 707-320B up to . The 707-320C convertible passenger-freighter model entered service in 1963, and passenger 707s have been converted to freighter configurations. Military derivatives include the E-3 Sentry airborne reconnaissance aircraft and the
C-137 Stratoliner The Boeing C-137 Stratoliner is a retired VIP transport aircraft derived from the Boeing 707 jet airliner used by the United States Air Force. Other nations also bought both new and used 707s for military service, primarily as VIP or tanker t ...
VIP transport. A total of 865 Boeing 707s were produced and delivered, not including 154 Boeing 720s.


Development


Model 367-80 origins

During and after World War II Boeing was known for its military aircraft. The company had produced innovative and important bombers, from the B-17 Flying Fortress and
B-29 Superfortress The Boeing B-29 Superfortress is an American four-engined propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War. Named in allusion to its predecessor, the B-17 F ...
, to the jet-powered
B-47 Stratojet The Boeing B-47 Stratojet (Boeing company designation Model 450) is a retired American long-range, six-engined, turbojet-powered strategic bomber designed to fly at high subsonic speed and at high altitude to avoid enemy interceptor aircraft. ...
and B-52 Stratofortress, but its commercial aircraft were not as successful as those from
Douglas Aircraft The Douglas Aircraft Company was an American aerospace manufacturer based in Southern California. It was founded in 1921 by Donald Wills Douglas Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas; it then operated as ...
and other competitors. As Douglas and Lockheed dominated the postwar air transport boom, the demand for Boeing's offering, the 377 Stratocruiser, quickly faded with only 56 examples sold and no new orders as the 1940s drew to a close. That venture had netted the company a $15 million loss. During 1949 and 1950, Boeing embarked on studies for a new jet transport and saw advantages with a design aimed at both military and civilian markets. Aerial refueling was becoming a standard technique for military aircraft, with over 800
KC-97 Stratofreighter The Boeing KC-97 Stratofreighter is a four-engined, piston-powered United States strategic tanker aircraft based on the Boeing C-97 Stratofreighter. It replaced the KB-29 and was succeeded by the Boeing KC-135 Stratotanker. Design and developm ...
s on order. The KC-97 was not ideally suited for operations with the USAF's new fleets of jet-powered fighters and bombers; this was where Boeing's new design would win military orders. As the first of a new generation of American passenger jets, Boeing wanted the aircraft's model number to emphasize the difference from its previous propeller-driven aircraft which bore 300-series numbers. The 400-, 500- and 600-series were already used by their missiles and other products, so Boeing decided that the jets would bear 700-series numbers, and the first would be the 707.Irving 1994, p. 171. The marketing department at Boeing chose 707 because they thought it was more appealing than 700. The project was enabled by the Pratt & Whitney JT3C
turbojet The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet which includes inlet guide vanes, a compressor, a combustion chamber, an ...
engine, the civilian version of the J57 that yielded much more power than the previous generation of jet engines and was proving itself with the B-52. Freed from the design constraints imposed by limitations of late-1940s jet engines, developing a robust, safe, and high capacity jet aircraft was within reach for Boeing. Boeing studied numerous wing and engine layouts for its new transport/tanker, some of which were based on the B-47 and C-97, before settling on the 367-80
quadjet A four-engined jet, sometimes called a quadjet, is a jet aircraft powered by four engines. The presence of four engines offers increased power, allowing such aircraft to be used as airliners, freighters, and military aircraft. Many of the firs ...
prototype aircraft. The "Dash 80" took less than two years from project launch in 1952 to rollout on May 14, 1954, then first flew on July 15, 1954. The prototype was a proof-of-concept aircraft for both military and civilian use. The
United States Air Force The United States Air Force (USAF) is the Aerial warfare, air military branch, service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part ...
was the first customer, using it as the basis for the
KC-135 Stratotanker The Boeing KC-135 Stratotanker is an American military aerial refueling aircraft that was developed from the Boeing 367-80 prototype, alongside the Boeing 707 airliner. It is the predominant variant of the C-135 Stratolifter family of trans ...
aerial refueling and cargo aircraft. Whether the passenger 707 would be profitable was far from certain. At the time, nearly all of Boeing's revenue came from military contracts. In a demonstration flight over Lake Washington outside Seattle, on August 7, 1955, test pilot
Tex Johnston Alvin Melvin "Tex" Johnston (August 18, 1914 – October 29, 1998) was an American jet-age test pilot for Bell Aircraft and the Boeing Company. Early life Johnston was born August 18, 1914, in Admire, Kansas, to farmers Alva and Ella Johnst ...
performed a
barrel roll A barrel roll is an aerial maneuver in which an airplane makes a complete rotation on both its longitudinal and lateral axes, causing it to follow a helical path, approximately maintaining its original direction. It is sometimes described as a " ...
in the 367-80 prototype. Although he justified his unauthorized action to Bill Allen, then president of Boeing, as selling the airplane with a 1 'g' maneuver he was told not to do it again. The wide fuselage of the Dash 80 was large enough for four-abreast (two-plus-two) seating like the Stratocruiser. Answering customers' demands and under Douglas competition, Boeing soon realized this would not provide a viable payload, so it widened the fuselage to to allow five-abreast seating and use of the KC-135's tooling. Douglas Aircraft had launched its
DC-8 The Douglas DC-8 (sometimes McDonnell Douglas DC-8) is a long-range narrow-body airliner built by the American Douglas Aircraft Company. After losing the May 1954 US Air Force tanker competition to the Boeing KC-135, Douglas announced in Ju ...
with a fuselage width of . The airlines liked the extra space and six-abreast seating, so Boeing increased the 707's width again to compete, this time to .


Production and testing

The first flight of the first-production 707-120 took place on December 20, 1957, and FAA certification followed on September 18, 1958. Both test pilots Joseph John "Tym" Tymczyszyn and James R. Gannett were awarded the first Iven C. Kincheloe Award for the test flights that led to certification. A number of changes were incorporated into the production models from the prototype. A Krueger flap was installed along the leading edge between the inner and outer engines on early 707-120 and -320 models."Boeing 707."
''airlinercafe.com''. Retrieved December 27, 2009.
This was in response to
de Havilland Comet The de Havilland DH.106 Comet was the world's first commercial jet airliner. Developed and manufactured by de Havilland in the United Kingdom, the Comet 1 prototype first flew in 1949. It featured an aerodynamically clean design with four ...
overrun accidents which occurred after over-rotating on take-off. Wing stall would also occur on the 707 with over-rotation so the leading-edge flaps were added to prevent stalling even with the tail dragging on the runway.


Further developments

The initial standard model was the 707-120 with JT3C turbojet engines.
Qantas Qantas Airways Limited ( ) is the flag carrier of Australia and the country's largest airline by fleet size, international flights, and international destinations. It is the world's third-oldest airline still in operation, having been founde ...
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. The frames in the 707 were set apart, so this resulted in a shortening of to a length of . With the maximum takeoff weight the same as that of the -120 (), the -138 was able to fly the longer routes that Qantas needed. Braniff International Airways ordered the higher-thrust version with Pratt & Whitney JT4A engines, the 707-220. The final major derivative was the 707-320, which featured an extended-span wing and JT4A engines, while the 707-420 was the same as the -320, but with Conway turbofan engines. Tex Johnston recommended Boeing increase the height of the tail fin, add a boosted rudder, as well as add a
ventral fin Pelvic fins or ventral fins are paired fins located on the ventral surface of fish. The paired pelvic fins are homologous to the hindlimbs of tetrapods. Structure and function Structure In actinopterygians, the pelvic fin consists of two ...
. These modifications were aimed at mitigating Dutch roll by providing more directional stability in yaw. Though initially fitted with turbojet engines, the dominant engine for the Boeing 707 family was the
Pratt & Whitney JT3D The Pratt & Whitney JT3D is an early turbofan aircraft engine derived from the Pratt & Whitney JT3C. It was first run in 1958 and was first flown in 1959 under a B-45 Tornado test aircraft. Over 8,000 JT3Ds were produced between 1959 and 1985. M ...
, a
turbofan The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which achieves mechanic ...
variant of the JT3C with lower fuel consumption and higher thrust. JT3D-engined 707s and 720s were denoted with a "B" suffix. While many 707-120Bs and -720Bs were conversions of existing JT3C-powered machines, 707-320Bs were available only as newly built aircraft, as they had a stronger structure to support a maximum takeoff weight increased by , along with modifications to the wing. The 707-320B series enabled nonstop westbound flights from Europe to the West Coast of the United States and from the US to Japan. The final 707 variant was the 707-320C, (C for "Convertible"), which had a large fuselage door for cargo. 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). The 707-320Bs built after 1963 used the same wing as the -320C and were known as 707-320B Advanced aircraft. In total, 1,010 707s were built for civilian use between 1958 and 1978, though many of these found their way to military service. 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. Traces of the 707 are still found in the 737, which uses a modified version of the 707's fuselage, as well as the same external nose and cockpit configurations as those of the 707. These were also used on the previous 727, while the
757 757 may refer to: * Boeing 757: a narrow-body airliner * AD 757: a year * 757 BC: a year * 757 (number): a number * Area code 757 Image:Area code 757.png, The area colored red indicates the southeast corner of Virginia served by area code 757 po ...
also used the 707 fuselage cross-section.


Design


Wings

The 707's wings are swept back at 35°, and like all swept-wing aircraft, display an undesirable " Dutch roll" flying characteristic that manifests itself as an alternating combined yawing and rolling motion. Boeing already had considerable experience with this on the B-47 and B-52, and had developed the
yaw damper A yaw damper (sometimes referred to as a stability augmentation system) is a system used to reduce (or damp) the undesirable tendencies of an aircraft to oscillate in a repetitive rolling and yawing motion, a phenomenon known as the Dutch roll. ...
system on the B-47 that would be applied to later swept-wing configurations like the 707. However, many pilots new to the 707 had no experience with this instability, as they were mostly accustomed to flying straight-wing propeller-driven aircraft such as the
Douglas DC-7 The Douglas DC-7 is an American transport aircraft built by the Douglas Aircraft Company from 1953 to 1958. A derivative of the DC-6, it was the last major piston engine-powered transport made by Douglas, being developed shortly after the earl ...
and
Lockheed Constellation The Lockheed Constellation ("Connie") is a propeller-driven, four-engined airliner built by Lockheed Corporation starting in 1943. The Constellation series was the first pressurized-cabin civil airliner series to go into widespread use. Its press ...
. On one customer-acceptance flight, where the yaw damper was turned off to familiarize the new pilots with flying techniques, a trainee pilot's actions violently exacerbated the Dutch roll motion and caused three of the four engines to be torn from the wings. The plane, a brand new 707-227, ''N7071'', destined for Braniff, crash-landed on a river bed north of Seattle at
Arlington, Washington Arlington is a city in northern Snohomish County, Washington, United States, part of the Seattle metropolitan area. The city lies on the Stillaguamish River in the western foothills of the Cascade Range, adjacent to the city of Marysville. It i ...
, killing four of the eight occupants. In his autobiography,
test pilot A test pilot is an aircraft pilot with additional training to fly and evaluate experimental, newly produced and modified aircraft with specific maneuvers, known as flight test techniques.Stinton, Darrol. ''Flying Qualities and Flight Testin ...
Tex Johnston describes a Dutch roll incident he experienced as a passenger on an early commercial 707 flight. As the aircraft's movements did not cease and most of the passengers became ill, he suspected a misrigging of the directional autopilot (yaw damper). He went to the cockpit and found the crew unable to understand and resolve the situation. He introduced himself and relieved the ashen-faced captain, who immediately left the cockpit feeling ill. Johnston disconnected the faulty autopilot and manually stabilized the plane "with two slight control movements".


Engines

File:Boeing 707-328, Air France AN1634050.jpg, An early
JT4A The Pratt & Whitney J75 (civilian designation: JT4A) is an axial-flow turbojet engine first flown in 1955. A two-spool design in the 17,000 lbf (76 kN) thrust class, the J75 was essentially the bigger brother of the Pratt & Whitney J57 ...
turbojet File:Boeing 707-338C, Australia - Royal Australian Air Force (RAAF) JP5845779.jpg, A later
JT3D The Pratt & Whitney JT3D is an early turbofan aircraft engine derived from the Pratt & Whitney JT3C. It was first run in 1958 and was first flown in 1959 under a B-45 Tornado test aircraft. Over 8,000 JT3Ds were produced between 1959 and 1985. M ...
low-bypass turbofan
The 707 uses engine-driven turbocompressors to supply compressed air for
cabin pressurization Cabin pressurization is a process in which conditioned air is pumped into the cabin of an aircraft or spacecraft in order to create a safe and comfortable environment for passengers and crew flying at high altitudes. For aircraft, this air is u ...
. On many commercial 707s, the outer port (number 1) engine mount is distinctly different from the other three, as this engine is not fitted with a turbocompressor. Later-model 707s typically had this configuration, although American Airlines had turbocompressors on engines 2 and 3 only. Early 707 models often had turbocompressor fairings on all four engines, but with only two or three compressors installed. The JT3D-3B engines are readily identifiable by the large gray secondary-air inlet doors in the nose cowl. These doors are fully open (sucked in at the rear) during takeoff to provide additional air. The doors automatically close with increasing airspeed. The 707 was the first commercial jet aircraft to be fitted with clamshell-type thrust reversers.


Upgraded engines

Pratt & Whitney, in a joint venture with Seven Q Seven (SQS) and Omega Air, selected the JT8D-219 as a replacement powerplant for Boeing 707-based aircraft, calling their modified configuration a 707RE."Boeing 707."
''Flug Revue'', May 12, 2002. Retrieved December 27, 2009.
Northrop Grumman selected the -219 to re-engine the US Air Force's fleet of 19 E-8 Joint STARS aircraft, which would allow the J-STARS more time on station due to the engine's greater fuel efficiency.
NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...
also planned to re-engine their fleet of E-3 Sentry AWACS aircraft. The -219 is publicized as being half the cost of the competing powerplant, the
CFM International CFM56 The CFM International CFM56 (U.S. military designation F108) series is a Franco-American family of high-bypass turbofan aircraft engines made by CFM International (CFMI), with a thrust range of . CFMI is a 50–50 joint-owned company of Saf ...
, and is 40 dB quieter than the original JT3D engines.


Operational history

The first commercial orders for the 707 came on October 13, 1955, when
Pan Am Pan American World Airways, originally founded as Pan American Airways and commonly known as Pan Am, was an American airline that was the principal and largest international air carrier and unofficial overseas flag carrier of the United States ...
committed to 20 Boeing 707s, and 25 Douglas DC-8s, dramatically increasing their passenger capacity (in available revenue passenger seat-miles per hour/per day) over its existing fleet of propeller aircraft. The competition between the 707 and DC-8 was fierce. 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. Until their initial batch of the aircraft had been delivered to them and put into operation, Pan American would have the distinction of being not only the "Launch Customer" for both transcontinental American jets, but the exclusive operator of American intercontinental jet transports for at least a year. The only rival in intercontinental jet aircraft production at the time was the British
de Havilland Comet The de Havilland DH.106 Comet was the world's first commercial jet airliner. Developed and manufactured by de Havilland in the United Kingdom, the Comet 1 prototype first flew in 1949. It featured an aerodynamically clean design with four ...
. However, this was never real competition for the American market as the Comet series had been the subject of fatal accidents (due to design flaws) early in its introduction, withdrawn from service, virtually redesigned from scratch, and reintroduced as version -4. It was also smaller and slower than the 707. Several major airlines committed only to the (second place in the production race) Douglas DC-8. Airlines and their passengers at the time preferred the more established Douglas Aircraft maker of passenger aircraft. Douglas had decided to wait for a larger and more fuel efficient engine (
Pratt & Whitney JT4A The Pratt & Whitney J75 (civilian designation: JT4A) is an axial-flow turbojet engine first flown in 1955. A two-spool design in the 17,000 lbf (76 kN) thrust class, the J75 was essentially the bigger brother of the Pratt & Whitney J57 ...
) and to design a larger and longer range aircraft around this engine. To stay competitive, Boeing made a late and costly decision to redesign and enlarge the 707's wing to help increase range and payload. The new version was the 707-320. Pan Am was the first airline to operate the 707; the carrier inaugurated 707 service with a christening at
National Airport Ronald Reagan Washington National Airport , sometimes referred to colloquially as National Airport, Washington National, Reagan National Airport, DCA, Reagan, or simply National, is an international airport in Arlington County, Virginia, across ...
on October 17, 1958, attended by
President Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; ; October 14, 1890 – March 28, 1969) was an American military officer and statesman who served as the 34th president of the United States from 1953 to 1961. During World War II, ...
, followed by a transatlantic flight for VIPs (personal guests of founder
Juan Trippe Juan Terry Trippe (June 27, 1899 – April 3, 1981) was an American commercial aviation pioneer, entrepreneur and the founder of Pan American World Airways, one of the iconic airlines of the 20th century. He was involved in the introduction of t ...
) from Baltimore's Friendship International Airport to Paris. The aircraft's first commercial flight was from Idlewild Airport, New York, to
Le Bourget Le Bourget () is a commune in the northeastern suburbs of Paris, France. It is located from the center of Paris. The commune features Le Bourget Airport, which in turn hosts the Musée de l'Air et de l'Espace (Air and Space Museum). A very ...
, Paris, on October 26, 1958, with a fuel stop in
Gander, Newfoundland Gander is a town located in the northeastern part of the island of Newfoundland in the Canadian province of Newfoundland and Labrador, approximately south of Gander Bay, south of Twillingate and east of Grand Falls-Windsor. Located on the nor ...
. In December, National Airlines operated the first US domestic jet airline flights between New York/Idlewild and Miami, using 707s leased from Pan Am;
American Airlines American Airlines is a major airlines of the United States, major US-based airline headquartered in Fort Worth, Texas, within the Dallas–Fort Worth metroplex. It is the Largest airlines in the world, largest airline in the world when measured ...
was the first domestic airline to fly its own jets, on January 25, 1959. TWA started domestic 707-131 flights in March and Continental Airlines started 707-124 flights in June; airlines that had ordered only the DC-8, such as
United United may refer to: Places * United, Pennsylvania, an unincorporated community * United, West Virginia, an unincorporated community Arts and entertainment Films * ''United'' (2003 film), a Norwegian film * ''United'' (2011 film), a BBC Two f ...
, Delta, and
Eastern Eastern may refer to: Transportation *China Eastern Airlines, a current Chinese airline based in Shanghai *Eastern Air, former name of Zambia Skyways *Eastern Air Lines, a defunct American airline that operated from 1926 to 1991 *Eastern Air Li ...
, were left without jets until September and lost market share on transcontinental flights. Qantas was the first non-US airline to use the 707s, starting in 1959. The 707 quickly became the most popular jetliner of its time. Its popularity led to rapid developments in airport terminals, runways, airline catering, baggage handling, reservations systems, and other air transport infrastructure. The advent of the 707 also led to the upgrading of
air traffic control Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airs ...
systems to prevent interference with military jet operations. As the 1960s drew to a close, the exponential growth in air travel led to the 707 being a victim of its own success. The 707 was now too small to handle the increased numbers of passengers on the routes for which it was designed. Stretching the fuselage was not a viable option because the installation of larger, more powerful engines would need a larger undercarriage, which was not feasible given the design's limited ground clearance at takeoff. Boeing's answer to the problem was the first
wide-body A wide-body aircraft, also known as a twin-aisle aircraft, is an airliner with a fuselage wide enough to accommodate two passenger aisles with seven or more seats abreast. The typical fuselage diameter is . In the typical wide-body economy cabin ...
airliner—the Boeing 747. The 707's first-generation engine technology was also rapidly becoming obsolete in the areas of noise and fuel economy, especially after the 1973 oil crisis. In 1982, during the Falklands War, the
Argentine Air Force "Argentine Wings" , mascot = , anniversaries = 10 August (anniversary) 1 May (Baptism of fire during the Falklands War) , equipment = 139 aircraft , equipment_label = , battles = * Operation Independence * Operation Soberanía * Falkl ...
used 707s to track the approaching task force. They were escorted away by Royal Navy Sea Harriers without being able to approach closer than 80 miles. Operations of the 707 were threatened by the enactment of international noise regulations in 1985. Shannon Engineering of Seattle developed a
hush kit A hush kit is an Aerodynamics, aerodynamic device used to help reduce the noise produced by antique aircraft jet engines. These devices are typically installed on older turbojet and low-bypass turbofan engines, as they are much louder than late ...
with funding from Tracor, Inc, of Austin, Texas. By the late 1980s, 172 Boeing 707s had been equipped with the Quiet 707 package. Boeing acknowledged that more 707s were in service than before the hush kit was available. Trans World Airlines flew the last scheduled 707 flight for passengers by a US carrier on October 30, 1983, although 707s remained in scheduled service by airlines from other nations for much longer.
Middle East Airlines Middle East Airlines – Air Liban S.A.L. ( ar, طيران الشرق الأوسط ـ الخطوط الجوية اللبنانية ''Ṭayyarān al-Sharq al-Awsaṭ – al-Khuṭūṭ al-jawiyyah al-lubnāniyyah''), more commonly known as Middle ...
of
Lebanon Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () or the Lebanese Republic, is a country in Western Asia. It is located between Syria to Lebanon–Syria border, the north and east and Israel to Blue ...
flew 707s and 720s in front-line passenger service until the end of the 1990s. Since
LADE Lade may refer to: People * Brendon Lade (born 1976), an Australian rules footballer * Sir John Lade (1759–1838), a baronet and Regency horse-breeder * Heinrich Eduard von Lade (1817–1904), a German banker and amateur astronomer * The Jarls ...
of Argentina removed its 707-320Bs from regular service in 2007,
Saha Airlines Saha Airlines ( fa, هواپیمایی ساها) is an Iranian Airline based in Tehran that operates scheduled domestic flights. History The company was established in 1990 as Saha Airliness and is wholly owned by the Islamic Republic of Iran ...
of Iran was the last commercial operator of the Boeing 707. After suspending its scheduled passenger service in April 2013, Saha continued to operate a small fleet of 707s on behalf of the
Iranian Air Force * Islamic Republic of Iran Air Force , patron = , motto = , "Skyhigh is my place" , colours = Ultramarine blue , colours_label = , march ...
. As of 2019, only a handful of 707s remain in operation, acting as military aircraft for aerial refueling, transport, and AWACS missions.


Variants

Although certified as Series 100s, 200s, 300s, etc., the different 707 variants are more commonly known as Series 120s, 220s, 320s, and so on, where the "20" part of the designation is Boeing's "customer number" for its development aircraft.


707-020

Announced in July 1957 as a derivative for shorter flights from shorter runways, the 707-020 first flew on November 23, 1959. Its type certificate was issued on June 30, 1960, and it entered service with
United Airlines United Airlines, Inc. (commonly referred to as United), is a major American airline headquartered at the Willis Tower in Chicago, Illinois.
on July 5, 1960. As a derivative, the 720 had low development costs, allowing profitability despite few sales. Compared to the 707-120, it has a length reduced by 9 feet (2.7 m), a modified wing and a lightened airframe for a lower
maximum takeoff weight The maximum takeoff weight (MTOW) or maximum gross takeoff weight (MGTOW) or maximum takeoff mass (MTOM) of an aircraft is the maximum weight at which the pilot is allowed to attempt to take off, due to structural or other limits. The analogous ...
. Powered by four Pratt & Whitney JT3C turbojets, the initial 720 could cover a range with 131 passengers in two classes. Powered by
JT3D The Pratt & Whitney JT3D is an early turbofan aircraft engine derived from the Pratt & Whitney JT3C. It was first run in 1958 and was first flown in 1959 under a B-45 Tornado test aircraft. Over 8,000 JT3Ds were produced between 1959 and 1985. M ...
turbofans, the 720B first flew on October 6, 1960, and entered service in March 1961. It could seat 156 passengers in one class over a range. A total of 154 Boeing 720s and 720Bs were built until 1967. Some 720s were later converted to the 720B specification. The 720 was succeeded by the
Boeing 727 The Boeing 727 is an American narrow-body airliner that was developed and produced by Boeing Commercial Airplanes. After the heavy 707 quad-jet was introduced in 1958, Boeing addressed the demand for shorter flight lengths from smaller airpo ...
trijet.


707-120

The 707-120 was the first production 707 variant, with a longer, wider fuselage, and greater wingspan than the Dash 80. The cabin had a full set of rectangular windows and could seat up to 189 passengers. It was designed for transcontinental routes, and often required a refueling stop when flying across the North Atlantic. It had four Pratt & Whitney JT3C-6 turbojets, civilian versions of the military J57, initially producing with water injection. Maximum takeoff weight was 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 shorter than the others, with (three frames) removed ahead and behind the wing, giving increased range. Maximum takeoff weight was the same as the standard version. It was a variant for Qantas, thus had its customer number 38. To allow for full-load takeoffs at midflight refueling stop Fiji, the wing's leading-edge slats were modified for increased lift, and the allowable temperature range for use of full takeoff power was increased by 10F degrees. Seven -138s were delivered to Qantas between June and September 1959, and they first carried passengers in July of that year. The 707-120B had Pratt & Whitney JT3D-1 turbofan engines, which were quieter, more powerful, and more fuel-efficient, rated at , with the later JT3D-3 version giving . (This thrust did not require water injection, eliminating both the system and 5000–6000 lb of water.) 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. American had its 23 surviving -123s converted to -123Bs, but TWA did not convert its 15 -131s. The only other conversions were Pan American's five surviving -121s and one surviving -139, the three aircraft delivered to the USAF as -153s and the seven short-bodied Qantas -138s (making 13 total 707s delivered to Qantas between 1959 and 1964). The first flight of the -120B was on June 22, 1960, and American carried the first passengers in March 1961; the last delivery was to American in April 1969. Maximum weight was for both the long- and short-bodied versions.


707-220

The 707-220 was designed for
hot and high In aviation, hot and high is a condition of low air density due to high ambient temperature and high airport elevation. Air density decreases with increasing temperature and altitude. The lower air density reduces the power output from the airc ...
operations with more powerful Pratt & Whitney JT4A-3 turbojets. Five of these were produced, but only four were ultimately delivered, with one being lost during a test flight. All were for Braniff International Airways and carried the model number 707-227; the first entered service in December 1959. This version was made obsolete by the arrival of the turbofan-powered 707-120B.


707-320

The 707-320 Intercontinental is a stretched version of the turbojet-powered 707-120, initially powered by JT4A-3 or JT4A-5 turbojets producing each (most eventually got JT4A-11s). The interior allowed up to 189 passengers, the same as the -120 and -220 series, but improved two-class capacity due to an 80-in fuselage stretch ahead of the wing (from to ), with extensions to the fin and horizontal stabilizer extending the aircraft's length further. The longer wing carried more fuel, increasing range by and allowing the aircraft to operate as true transoceanic aircraft. The wing modifications included outboard and inboard inserts, as well as a kink in the trailing edge to add area inboard. Takeoff weight was increased to initially and to with the higher-rated JT4As and center section tanks. Its first flight was on January 11, 1958; 69 turbojet 707-320s were delivered through January 1963, the first passengers being carried (by Pan Am) in August 1959.


707-420

The 707-420 was identical to the -320, but fitted with Rolls-Royce Conway 508 (RCo.12) turbofans (or by-pass turbojets as Rolls-Royce called them) of thrust each. The first announced customer was Lufthansa. BOAC's controversial order was announced six months later, but the British carrier got the first service-ready aircraft off the production line. The British Air Registration Board refused to give the aircraft a certificate of airworthiness, citing insufficient yaw control, excessive rudder forces, and the ability to over-rotate on takeoff, stalling the wing on the ground (a fault of the de Havilland Comet 1). Boeing responded by adding 40 inches to the vertical stabilizer, applying full instead of partial rudder boost, and fitting an underfin to prevent over-rotation. These modifications except to the fin under the tail became standard on all 707 variants and were retrofitted to all earlier 707s. The 37 -420s were delivered to BOAC, Lufthansa,
Air-India Air India is the flag carrier airline of India, headquartered at New Delhi. It is owned by Talace Private Limited, a Special-Purpose Vehicle (SPV) of Tata Sons, after Air India Limited's former owner, the Government of India, completed the sa ...
,
El Al El Al Israel Airlines Ltd. (, he, אל על נתיבי אויר לישראל בע״מ), trading as El Al (Hebrew: , "Upwards", "To the Skies" or "Skywards", stylized as ELAL; ar, إل-عال), is the flag carrier of Israel. Since its inaugura ...
, and
Varig VARIG (acronym for Viação Aérea RIo-Grandense, ''Rio Grandean Airways'') was the first airline founded in Brazil, in 1927. From 1965 until 1990, it was Brazil's leading airline, and virtually its only international one. In 2005, Varig went ...
through November 1963; Lufthansa was the first to carry passengers, in March 1960.


707-320B

The 707-320B had the application of the JT3D turbofan to the Intercontinental, but with aerodynamic refinements. The wing was modified from the -320 by adding a second inboard kink, a dog-toothed leading edge, and curved low-drag wingtips instead of the earlier blunt ones. These wingtips increased overall wingspan by 3.0 ft. Takeoff gross weight was increased to . The 175 707-320B aircraft were all new-build; no original -320 models were converted to fan engines in civilian use. First service was June 1962, with Pan Am. The 707-320B Advanced is an improved version of the -320B, adding the three-section leading-edge flaps already seen on the -320C. These reduced takeoff and landing speeds and altered the lift distribution of the wing, allowing the ventral fin found on earlier 707s to be deleted. From 1965, -320Bs had the uprated -320C undercarriage allowing the same MTOW. These were often identified as 707-320BA-H.


707-320C

The 707-320C has a convertible passenger–freight configuration, which became the most widely produced variant of the 707. The 707-320C 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 deletion of the underfin. A total of 335 of this variant were built, including some with JT3D-7 engines ( takeoff thrust) and a takeoff weight of . Most -320Cs were delivered as passenger aircraft with airlines hoping the cargo door would increase second-hand values. The addition of two additional emergency exits, one on either side aft of the wing raised the maximum passenger limit to 219. Only a few aircraft were delivered as pure freighters. One of the final orders was by the Iranian Government for 14 707-3J9C aircraft capable of VIP transportation, communication, and in-flight refueling tasks.


707-700

The 707-700 was a test aircraft used to study the feasibility of using
CFM International CFM56 The CFM International CFM56 (U.S. military designation F108) series is a Franco-American family of high-bypass turbofan aircraft engines made by CFM International (CFMI), with a thrust range of . CFMI is a 50–50 joint-owned company of Saf ...
engines on a 707 airframe and possibly retrofitting existing aircraft with the engine. After testing in 1979, ''N707QT'', the last commercial 707 airframe, was restored to 707-320C configuration and delivered to the Moroccan Air Force as a tanker aircraft via a "civilian" order. Boeing abandoned the retrofit program, since it felt it would be a threat to the
Boeing 757 The Boeing 757 is an American narrow-body airliner designed and built by Boeing Commercial Airplanes. The then-named 7N7, a twinjet successor for the 727 (a trijet), received its first orders in August 1978. The prototype completed its mai ...
and Boeing 767 programs. The information gathered from testing led to the eventual retrofitting of CFM56 engines to the USAF C-135/KC-135R models, and some military versions of the 707 also used the CFM56. The Douglas DC-8 "Super 70" series with CFM56 engines was developed and extended the DC-8's life in a stricter noise regulatory environment. As a result, significantly more DC-8s remained in service into the 21st century than 707s.


Undeveloped variants

The 707-620 was a proposed domestic range-stretched variant of the 707-320B. The 707-620 was to carry around 200 passengers while retaining several aspects of the 707-320B. It would have been delivered around 1968 and would have also been Boeing's answer to the stretched Douglas DC-8 Series 60. Had the 707-620 been built, it would have cost around US$8,000,000. However, engineers discovered that a longer fuselage and wing meant a painstaking redesign of the wing and landing-gear structures. Rather than spend money on upgrading the 707, engineer
Joe Sutter Joseph Frederick Sutter (March 21, 1921 – August 30, 2016) was an American engineer for the Boeing Airplane Company and manager of the design team for the Boeing 747 under Malcolm T. Stamper, the head of the 747 project. '' Air & Space/Sm ...
stated the company "decided spending money on the 707 wasn't worth it". The project was cancelled in 1966 in favor of the newer Boeing 747. The 707-820 was a proposed intercontinental stretched variant of the 707-320B. This variant was to be powered by four Pratt & Whitney JT3D-15 turbofan engines, and it would have had a nearly extension in wingspan, to . Two variations were proposed, the 707-820(505) model and the 707-820(506) model. The 505 model would have had a fuselage longer than the 707-320B, for a total length of . This model would have carried 209 passengers in mixed-class configuration and 260 passengers in all-economy configuration. The 506 model would have had a fuselage longer than the 707-320B, to in length. This second model would have carried 225 passengers in mixed-class configuration and 279 passengers in all-economy configuration. Like the 707-620, the 707-820 was also set to compete with the stretched DC-8-60 Super Series models. The design was being pitched to American, TWA, BOAC, and Pan Am at the time of its proposal in early 1965. The 707-820 would have cost US$10,000,000. Like the 707-620, the 707-820 would have required a massive structural redesign to the wing and gear structures. The 707-820 was also cancelled in 1966 in favor of the 747.


Military versions

The militaries of the US and other countries have used the civilian 707 aircraft in a variety of roles, and under different designations. (The 707 and US Air Force's KC-135 were developed in parallel from the Boeing 367–80 prototype.) The Boeing E-3 Sentry is a US military
airborne warning and control system Airborne or Airborn may refer to: Arts, entertainment, and media Films * ''Airborne'' (1962 film), a 1962 American film directed by James Landis * ''Airborne'' (1993 film), a comedy–drama film * ''Airborne'' (1998 film), an action film sta ...
(AWACS) aircraft based on the Boeing 707 that provides all-weather surveillance, command, control, and communications. The Northrop Grumman E-8 Joint STARS is an aircraft modified from the Boeing 707-300 series commercial airliner. The E-8 carries specialized radar, communications, operations and control subsystems. The most prominent external feature is the 40 ft (12 m) canoe-shaped radome under the forward fuselage that houses the 24 ft (7.3 m) APY-7 active electronically scanned array side looking airborne radar antenna. The VC-137 variant of the Stratoliner was a special-purpose design meant to serve as Air Force One, the secure transport for the
President of the United States The president of the United States (POTUS) is the head of state and head of government of the United States of America. The president directs the executive branch of the federal government and is the commander-in-chief of the United States ...
. These models were in operational use from 1962 to 1990. The first presidential jet aircraft, a VC-137B designated SAM 970, is on display at the Boeing Museum of Flight in Seattle. Two VC-137C aircraft are on display with SAM 26000 at the
National Museum of the United States Air Force The National Museum of the United States Air Force (formerly the United States Air Force Museum) is the official museum of the United States Air Force located at Wright-Patterson Air Force Base, northeast of Dayton, Ohio. The NMUSAF is the ...
near
Dayton, Ohio Dayton () is the sixth-largest city in the U.S. state of Ohio and the county seat of Montgomery County. A small part of the city extends into Greene County. The 2020 U.S. census estimate put the city population at 137,644, while Greater D ...
and
SAM 27000 ''SAM 27000'' was the second of two Boeing VC-137C United States Air Force aircraft that were specifically configured and maintained for the use of the president of the United States. It used the call sign Air Force One when the president was o ...
at the Ronald Reagan Presidential Library in
Simi Valley, California Simi Valley (; Chumashan languages, Chumash: ''Shimiyi'') is a city in Simi Valley (valley), the valley of the same name in the southeast region of Ventura County, California, United States. Simi Valley is from Downtown Los Angeles, making it ...
. The
Canadian Forces } The Canadian Armed Forces (CAF; french: Forces armées canadiennes, ''FAC'') are the unified military forces of Canada, including sea, land, and air elements referred to as the Royal Canadian Navy, Canadian Army, and Royal Canadian Air Forc ...
also operated the Boeing 707 with the designation
CC-137 Husky The Boeing CC-137 was a transport and tanker aircraft which served with the Canadian Forces from 1970 to 1997. The Boeing 707-347C aircraft provided long range passenger transport for the military, VIP transport for government and air-to-air r ...
(707-347C) from 1971 to 1997. Boeing 717 was the company designation for the
C-135 Stratolifter The Boeing C-135 Stratolifter is a transport aircraft derived from the prototype Boeing 367-80 jet airliner (also the basis for the 707) in the early 1950s. It has a narrower fuselage and is shorter than the 707. Boeing gave the aircraft the ...
and
KC-135 Stratotanker The Boeing KC-135 Stratotanker is an American military aerial refueling aircraft that was developed from the Boeing 367-80 prototype, alongside the Boeing 707 airliner. It is the predominant variant of the C-135 Stratolifter family of trans ...
derivatives of the 367-80. (The 717 designation was later reused in renaming the McDonnell Douglas MD-95 to
Boeing 717 The Boeing 717 is an American five-abreast single-aisle airliner produced by Boeing Commercial Airplanes. The twin-engine airliner was developed for the 100-seat market and originally marketed by McDonnell Douglas as the MD-95. It was a shor ...
after the company merged with Boeing.)


Operators

Boeing's customer codes used to identify specific options and livery specified by customers was started with the 707, and has been maintained through all Boeing's models. In essence the same system as used on the earlier Boeing 377, the code consisted of two digits affixed to the model number to identify the specific aircraft version. For example,
Pan American World Airways Pan American World Airways, originally founded as Pan American Airways and commonly known as Pan Am, was an American airline that was the principal and largest international air carrier and unofficial overseas flag carrier of the United States ...
was assigned code "21". Thus, a 707-320B sold to Pan Am had the model number 707-321B. The number remained constant as further aircraft were purchased; thus, when Pan American purchased the 747-100, it had the model number 747-121. In the 1980s, the USAF acquired around 250 used 707s to provide replacement turbofan engines for the
KC-135E Stratotanker The Boeing KC-135 Stratotanker is an American military aerial refueling aircraft that was developed from the Boeing 367-80 prototype, alongside the Boeing 707 airliner. It is the predominant variant of the C-135 Stratolifter family of transport ...
program. The 707 is no longer operated by major airlines. American actor John Travolta owned an ex-Qantas 707-138B, with the registration ''N707JT.'' In May 2017, he donated the plane to the
Historical Aircraft Restoration Society The Historical Aircraft Restoration Society, often referred to by its acronym, HARS, is an Australian based aircraft restoration group. The group has two museums, at Shellharbour Airport in New South Wales, Australia, and Parkes, New South Wales ...
near Wollongong, Australia. The plane will be flown to
Illawarra Regional Airport Shellharbour Airport, formerly Illawarra Regional Airport, also referred as Albion Park Aerodrome or Wollongong Airport, is an airport located in Albion Park Rail, Shellharbour City, New South Wales, Australia. The Historical Aircraft Restor ...
, where HARS is based, once repairs to ensure safe flying condition have been completed.


Orders and deliveries


Deliveries


707 Model summary


Accidents and incidents

As of January 2019, the 707 has been in 261 aviation occurrences and 174 hull-loss accidents with a total of 3,039 fatalities. The deadliest incident involving the 707 was the
Agadir air disaster The Agadir air disaster was a chartered Boeing 707 passenger flight on Sunday, August 3, 1975, that crashed into a mountain on approach to Agadir Inezgane Airport, Morocco. All 188 passengers and crew on board were killed. It is the deadliest av ...
which took place on August 3, 1975 with 188 fatalities. On January 14, 2019, a
Saha Airlines Saha Airlines ( fa, هواپیمایی ساها) is an Iranian Airline based in Tehran that operates scheduled domestic flights. History The company was established in 1990 as Saha Airliness and is wholly owned by the Islamic Republic of Iran ...
cargo flight
crashed "Crashed" is the third U.S. rock Single (music), single, (the fifth overall), from the band Daughtry (band), Daughtry's debut album. It was released only to U.S. rock stations on September 5, 2007. Upon its release the song got adds at those stat ...
, killing 15 people and seriously injuring one more person. It was the last civil 707 in operation.


Aircraft on display

* ''VH-XBA'' model 707-138B (number 29) is one of the first 707s exported, and the first civilian jet registered in Australia (to airline
Qantas Qantas Airways Limited ( ) is the flag carrier of Australia and the country's largest airline by fleet size, international flights, and international destinations. It is the world's third-oldest airline still in operation, having been founde ...
in 1959); it is on display at the Qantas Founders Outback Museum in
Longreach, Queensland Longreach is a town and a locality in the Longreach Region, Queensland, Australia. It is the administrative centre of the Longreach Regional Council, which was established in 2008 as a merger of the former Longreach, Ilfracombe, and Isisfor ...
, Australia. * ''4X-BYD'' model 707-131(F), (number 34), an ex-
Israeli Air Force The Israeli Air Force (IAF; he, זְרוֹעַ הָאֲוִיר וְהֶחָלָל, Zroa HaAvir VeHahalal, tl, "Air and Space Arm", commonly known as , ''Kheil HaAvir'', "Air Corps") operates as the aerial warfare branch of the Israel Defens ...
and TWA aircraft, is on display at the Israeli Air Force Museum near
Hatzerim Hatzerim ( he, חֲצֵרִים, ''lit.'' Farmyards) is a kibbutz located 8 kilometers west of Beersheba in the Negev desert in Israel. It is named after the Bible (Deuteronomy 2:23), mentioning a site nearby: "the Avvites who lived in farmyards ...
, Israel. * ''OO-SJA'' model 707-329 (number 78), ex-
Sabena The ''Societé anonyme belge d'Exploitation de la Navigation aérienne'' (French; ), better known by the acronym Sabena or SABENA, was the national airline of Belgium from 1923 to 2001, with its base at Brussels National Airport. After its ba ...
, is the first jetliner registered in Belgium; forward fuselage, salvaged following an uncontained engine failure and emergency landing, is on display at the
Royal Military Museum Brussels The Royal Museum of the Armed Forces and Military History (french: Musée Royal de l'Armée et d'Histoire Militaire, often abbreviated to MRA, nl, Koninklijk Museum van het Leger en de Krijgsgeschiedenis, KLM) is a military museum that occup ...
. * ''4X-JYW'' model 707-328 (msn. 173617, number 110), is a former
Air France Air France (; formally ''Société Air France, S.A.''), stylised as AIRFRANCE, is the flag carrier of France headquartered in Tremblay-en-France. It is a subsidiary of the Air France–KLM Group and a founding member of the SkyTeam global a ...
(F-BHSE) aircraft sold to the Israeli Air Force; it is on display at the Israeli Air Force Museum, Beersheba – Hatzerim (LLHB). * ''G-APFJ'' model 707-436 (msn. 17711, number 163) is a forward fuselage on display at the National Museum of Flight,
East Fortune East Fortune is a village in East Lothian, Scotland, located 2 miles (3 km) north west of East Linton. The area is known for its airfield which was constructed in 1915 to help protect Britain from attack by German Zeppelin airships during t ...
, in BOAC livery. * ''D-ABOB'' model 707-430 (msn. 17720, number 115) is a former Lufthansa airliner on display at Hamburg Airport (HAM/EDDH); it was originally registered as ''D-ABOD''. On June 9, 2021 the aircraft was towed to Stand 65 at the airport where it will be scrapped due to high maintenance costs. *''N7515A'' model 707-123 (msn. 17642, number 41), posing as ''D-ABOF'', a 707-430 formerly operated by Lufthansa has its nose section preserved at the
Deutsches Museum The Deutsches Museum (''German Museum'', officially (English: ''German Museum of Masterpieces of Science and Technology'')) in Munich, Germany, is the world's largest museum of science and technology, with about 28,000 exhibited objects from ...
in
Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the third-largest city in Germany, after Berlin and Ha ...
. *''4X-ATA'' model 707-458 (msn. 18070, number 205) is a former El Al aircraft, the nose of which is preserved at the
Cradle of Aviation Museum The Cradle of Aviation Museum is an aerospace museum located in Garden City, New York on Long Island, established to commemorate Long Island's part in the history of aviation. It is located on land once part of Mitchel Air Force Base which, to ...
in Garden City, New York. * ''CC-CCG'' model 707-330B (msn. 18642, number 233), an ex-Lufthansa and LAN Chile craft, is undergoing restoration at Santiago – Los Cerillos, Chile (ULC/SCTI) and will be repainted in the Chilean airline's 1960s scheme. * ''F-BLCD'' model 707-328B (number 471) is on display at the Musée de l'Air et de l'Espace, Paris, France. * ''EP-IRJ'' model 707-321B (msn. 18958, number 475), a former
Iran Air The National Airline of Iran ( fa, هواپیمايی ملی ایران, Havâpeymâyi-ye Melli-ye Irân), branded as Iran Air, is the flag carrier of Iran, which is headquartered at Mehrabad Airport in Tehran. As of 2018, it operates schedule ...
aircraft, was originally delivered to Pan American as ''N416PA'', and is currently the Air Restaurant at Mehrabad Airport, Tehran. * ''A20-627'' model 707-338C (msn. 19627, number 707) flew with the
RAAF "Through Adversity to the Stars" , colours = , colours_label = , march = , mascot = , anniversaries = RAAF Anniversary Commemoration ...
. Originally delivered to
Qantas Qantas Airways Limited ( ) is the flag carrier of Australia and the country's largest airline by fleet size, international flights, and international destinations. It is the world's third-oldest airline still in operation, having been founde ...
as ''VH-EAG'', its forward fuselage is preserved at the
Historical Aircraft Restoration Society The Historical Aircraft Restoration Society, often referred to by its acronym, HARS, is an Australian based aircraft restoration group. The group has two museums, at Shellharbour Airport in New South Wales, Australia, and Parkes, New South Wales ...
, Albion Park Rail, New South Wales, Australia. * ''1419'' model 707-328C (msn. 19917, number 763), an ex- SAAF aircraft, is on display at the
South African Air Force Museum The South African Air Force Museum houses exhibits and restores material related to the history of the South African Air Force. The museum is divided into three locations, AFB Swartkop outside Pretoria, AFB Ysterplaat in Cape Town and at the Port ...
Swartkop Air Force Base,
Pretoria Pretoria () is South Africa's administrative capital, serving as the seat of the executive branch of government, and as the host to all foreign embassies to South Africa. Pretoria straddles the Apies River and extends eastward into the foot ...
. * ''N893PA'' model 707-321B (msn. 20030, number 791), a former
CAAC The Civil Aviation Administration of China (CAAC; ) is the Chinese civil aviation authority under the Ministry of Transport. It oversees civil aviation and investigates aviation accidents and incidents. As the aviation authority responsible f ...
aircraft originally delivered to Pan American, is preserved at Tianjin, China. * ''HZ-HM2'' Model 707-386C (msn. 21081, number 903) is a Saudi Air Force VIP aircraft painted in the current Saudia color scheme; delivered in 1975, it is registered as ''HZ-HM1'' and preserved at the Saudi Air Force Museum,
Riyadh Riyadh (, ar, الرياض, 'ar-Riyāḍ, lit.: 'The Gardens' Najdi pronunciation: ), formerly known as Hajr al-Yamamah, is the capital and largest city of Saudi Arabia. It is also the capital of the Riyadh Province and the centre of th ...
.


Specifications


See also


References


Footnotes


Citations


Bibliography

* * * Breffort, Dominique. ''Boeing 707, KC-135 and Civilian and Military Versions''. Paris: Histoire & Collections, 2008. . * Caidin, Martin. ''Boeing 707''. New York: Bantam Books, 1959. * Cearley, George Walker. ''Boeing 707 & 720: A Pictorial History''. Dallas, TX: G.W. Cearley Jr, 1993. * Francillon, René. ''Boeing 707: Pioneer Jetliner''. Shrewsbury, Shropshire, UK: Motor Books International, 1999. . * Cook, William H. ''Road to the 707: The Inside Story of Designing the 707''. Bellevue, WA: TYC Publishing Company, 1991. . * * Kennedy, Charles. ''Boeing 707 Manual''. Sparkford, Yeovil, Somerset, UK: Haynes Publishing, 2018. . * Lloyd, Alwyn T. ''Boeing 707 & AWACS in Detail and Scale''. Falbrook, CA: Aero Publishers, 1987. . * * Price, Alfred. ''The Boeing 707''. Leatherhead, Surrey, UK: Profile Publications, 1967. * Proctor, Jon. ''Boeing 720''. Miami, FL: World Transport Press, 2001. . * Schiff, Barry J. ''The Boeing 707''. Blue Ridge Summit, PA: Tab Books, 1982, First edition 1967. . * Smith, Paul Raymond. ''Boeing 707 – Airline Markings No. 3''. Shrewsbury, Shropshire, UK: Swan Hill Press, 1993. . * Stachiw, Anthony L. and Andrew Tattersall. ''Boeing CC137 (Boeing 347C) in Canadian Service''. St. Catherines, ON: Vanwell Publishing Ltd., 2004. . * Whittle, John A. ''The Boeing 707 and 720''. Tonbridge, Kent: Air Britain (Historians), 1972. . * * * Winchester, Jim (2002). ''Boeing 707''. Shrewsbury, Shropshire, UK: Airlife. .


External links

* * * * * – (archive not available) * *
Boeing 707: The aircraft that changed the way we fly
BBC Culture, October 2014 {{Authority control 707 1950s United States airliners Quadjets Low-wing aircraft Aircraft first flown in 1957