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SAEP ( Spanish : Servicios Aéreos Especializados en Transportes Petroleros) is a Colombian cargo charter airline that specializes in oil transport. It was founded in 1980, and still operates today from the city of Bogotá .

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34-512: SAEP was founded on May 19, 1980, in the city of Bogotá. Its first aircraft were Douglas DC-3s and then later the company decided to switch to Antonov An-32s . This the current active fleet of SAEP. This article related to an airline based in Colombia is a stub . You can help Misplaced Pages by expanding it . Douglas DC-3 The Douglas DC-3 is a propeller -driven airliner manufactured by Douglas Aircraft Company , which had

68-507: A "DC-3 replacement" over the next three decades (including the very successful Fokker F27 Friendship ), but no single type could match the versatility, rugged reliability, and economy of the DC-3. While newer airliners soon replaced it on longer high-capacity routes, it remained a significant part of air transport systems well into the 1970s as a regional airliner before being replaced by early regional jets . Perhaps unique among prewar aircraft,

102-563: A DC-3 or some variant. Following the war, the airliner market was flooded with surplus transport aircraft, and the DC-3 was no longer competitive because it was smaller and slower than aircraft built during the war. It was made obsolete on main routes by more advanced types such as the Douglas DC-4 and Convair 240 , but the design proved adaptable and was still useful on less commercially demanding routes. Civilian DC-3 production ended in 1943 at 607 aircraft. Military versions, including

136-538: A decommissioned model is attached to the store. There is dine-in seating available in the plane. Related development Aircraft of comparable role, configuration, and era Related lists Arthur E. Raymond Arthur Emmons Raymond (March 24, 1899, in Boston Massachusetts – March 22, 1999, in Santa Monica , California ) was an aeronautical engineer who led the team that designed

170-614: A lasting effect on the airline industry in the 1930s to 1940s and World War II . It was developed as a larger, improved 14-bed sleeper version of the Douglas DC-2 . It is a low-wing metal monoplane with conventional landing gear , powered by two radial piston engines of 1,000–1,200 hp (750–890 kW). Although the DC-3s originally built for civil service had the Wright R-1820 Cyclone , later civilian DC-3s used

204-685: A trip entailed short hops in slower and shorter-range aircraft during the day, coupled with train travel overnight . Several radial engines were offered for the DC-3. Early-production civilian aircraft used either the 9-cylinder Wright R-1820 Cyclone 9 or the 14-cylinder Pratt & Whitney R-1830 Twin Wasp , but the Twin Wasp was chosen for most military versions and was also used by most DC-3s converted from military service. Five DC-3S Super DC-3s with Pratt & Whitney R-2000 Twin Wasps were built in

238-506: A very large number of civil and military operators of the DC-3/C-47 and related types, which would have made it impracticable to provide a comprehensive listing of all operators. A common saying among aviation enthusiasts and pilots is "the only replacement for a DC-3 is another DC-3". Its ability to use grass or dirt runways makes it popular in developing countries or remote areas, where runways may be unpaved. The oldest surviving DST

272-399: Is N133D, the sixth Douglas Sleeper Transport built, manufactured in 1936. This aircraft was delivered to American Airlines on 12 July 1936 as NC16005. In 2011 it was at Shell Creek Airport, Punta Gorda, Florida . It has been repaired and has been flying again, with a recent flight on 25 April 2021. The oldest DC-3 still flying is the original American Airlines Flagship Detroit (c/n 1920,

306-837: Is a conversion of the DC-3/C-47. Basler refurbishes C-47s and DC-3s at Oshkosh , Wisconsin , fitting them with Pratt & Whitney Canada PT6A-67R turboprop engines, lengthening the fuselage by 40 in (1,000 mm) with a fuselage plug ahead of the wing, and some local strengthening of the airframe. South Africa-based Braddick Specialised Air Services International (commonly referred to as BSAS International) has also performed Pratt & Whitney PT6 turboprop conversions, having performed modifications on over 50 DC-3/C-47s / 65ARTP / 67RTP / 67FTPs. American Airlines inaugurated passenger service on June 26, 1936, with simultaneous flights from Newark, New Jersey and Chicago , Illinois. Early U.S. airlines like American , United , TWA , Eastern , and Delta ordered over 400 DC-3s. These fleets paved

340-598: The C-47 Skytrain (the Dakota in British RAF service), and Soviet- and Japanese-built versions, brought total production to over 16,000. Many continued to be used in a variety of niche roles; 2,000 DC-3s and military derivatives were estimated to be still flying in 2013; by 2017 more than 300 were still flying. As of 2023 it is estimated about 150 are still flying. "DC" stands for "Douglas Commercial". The DC-3

374-640: The DC-3 . Raymond grew up in Pasadena , California , the son of the owner of a luxury hotel. He completed a B.A. at Harvard University , and a M.S. in aeronautical engineering at MIT in 1921. Raymond spent his entire career at the Douglas Aircraft Company . Beginning as a metal fitter, he rose to the rank of chief engineer, contributing to the design of all Douglas airliners from the DC-1 to

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408-553: The DC-8 . During World War II , he helped managed the huge effort that produced tens of thousands of aircraft for that war. Raymond is best known as the lead designer of the DC-3 , "The Plane That Changed the World," the first airliner that could break even hauling passengers without a government subsidy and without carrying mail. The military equivalent of the DC-3 was the C-47 . In Europe,

442-498: The Pratt & Whitney R-1830 Twin Wasp engine. The DC-3 has a cruising speed of 207 mph (333 km/h), a capacity of 21 to 32 passengers or 6,000 lbs (2,700 kg) of cargo, and a range of 1,500 mi (2,400 km), and can operate from short runways. The DC-3 had many exceptional qualities compared to previous aircraft. It was fast, had a good range, was more reliable, and carried passengers in greater comfort. Before

476-698: The 1933 DC-1 , was promising, and led to the DC-2 in 1934. The DC-2 was a success, but with room for improvement. The DC-3 resulted from a marathon telephone call from American Airlines CEO C. R. Smith to Donald Douglas, when Smith persuaded a reluctant Douglas to design a sleeper aircraft based on the DC-2 to replace American's Curtiss Condor II biplanes. The DC-2's cabin was 66 inches (1.7 m) wide, too narrow for side-by-side berths. Douglas agreed to go ahead with development only after Smith informed him of American's intention to purchase 20 aircraft. The new aircraft

510-845: The 43rd aircraft off the Santa Monica production line, delivered on 2 March 1937), which appears at airshows around the United States and is owned and operated by the Flagship Detroit Foundation. The base price of a new DC-3 in 1936 was around $ 60,000–$ 80,000, and by 1960 used aircraft were available for $ 75,000. In 2023, flying DC-3s can be bought from $ 400,000-$ 700,000. As of 2024, the Basler BT-67 with additions to handle cold weather and snow runways are used in Antarctica including regularly landing at

544-521: The DC-2 in service from Amsterdam via Batavia (now Jakarta ) to Sydney , by far the world's longest scheduled route at the time. In total, KLM bought 23 DC-3s before the war broke out in Europe. In 1941, a China National Aviation Corporation (CNAC) DC-3 pressed into wartime transportation service was bombed on the ground at Suifu Airfield in China, destroying the outer right wing. The only spare available

578-493: The DC-3 continues to fly in active commercial and military service as of 2021, eighty-six years after the type's first flight in 1935, although the number is dwindling due to expensive maintenance and a lack of spare parts. There are small operators with DC-3s in revenue service and as cargo aircraft . Applications of the DC-3 have included passenger service, aerial spraying, freight transport, military transport, missionary flying, skydiver shuttling and sightseeing. There have been

612-480: The DC-3 was known as the "Dakota." Raymond's grandson Stephen has said: "In the DC-3, he did almost everything. He knew every bolt and screw in that plane." About 10,600 DC-3s and C-47s were eventually built between 1934 and 1945, making it the most produced airliner of all time. At the time of Raymond's death, about 2,000 DC-3s were still flying and about 400 were still in commercial service. After retiring from Douglas in 1960, NASA put Raymond in charge of supervising

646-483: The DST was given the designation DC-3 . No prototype was built, and the first DC-3 built followed seven DSTs off the production line for delivery to American Airlines. The DC-3 and DST popularized air travel in the United States. Eastbound transcontinental flights could cross the U.S. in about 15 hours with three refueling stops, while westbound trips against the wind took 17 + 1 ⁄ 2 hours. A few years earlier, such

680-629: The South Pole during the austral summer. Douglas C-47-DL serial number 41-7723 is on display at Pima Air & Space Museum near Tucson , Arizona . The aircraft was previously displayed at the United States Air Force Museum . Data from McDonnell Douglas Aircraft since 1920 General characteristics Performance An attraction for the city Taupō in New Zealand , is a McDonald's outlet, where

714-624: The Soviet Union as the Lisunov Li-2 (4,937 aircraft). After the war, thousands of cheap ex-military DC-3s became available for civilian use. Cubana de Aviación became the first Latin American airline to offer a scheduled service to Miami when it started its first scheduled international service from Havana in 1945 with a DC-3. Cubana used DC-3s on some domestic routes well into the 1960s. Douglas developed an improved version,

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748-529: The Super DC-3, with more power, greater cargo capacity, and an improved wing, but with surplus aircraft available for cheap, they failed to sell well in the civilian aviation market. Only five were delivered, three of them to Capital Airlines . The U.S. Navy had 100 of its early R4Ds converted to Super DC-3 standard during the early 1950s as the Douglas R4D-8/C-117D . The last U.S. Navy C-117

782-629: The US Navy with the designation YC-129 alongside 100 R4Ds that had been upgraded to the Super DC-3 specifications. From the early 1950s, some DC-3s were modified to use Rolls-Royce Dart engines, as in the Conroy Turbo Three . Other conversions featured Armstrong Siddeley Mamba or Pratt & Whitney PT6 A turbines . The Greenwich Aircraft Corp DC-3-TP is a conversion with an extended fuselage and with Pratt & Whitney Canada PT6A-65AR or PT6A-67R engines fitted. The Basler BT-67

816-472: The World War II, it pioneered many air travel routes. It was able to cross the continental United States from New York to Los Angeles in 18 hours, with only three stops. It is one of the first airliners that could profitably carry only passengers without relying on mail subsidies. In 1939, at the peak of its dominance in the airliner market, around ninety percent of airline flights on the planet were by

850-681: The end of World War II, Raymond proposed to the USAF that they create an organization to think about intercontinental warfare. That organization became the Rand Corporation , of which he was a founding member. He was also a founding member of the National Academy of Engineering . In 1991 he received the National Air and Space Museum Lifetime Achievement Trophy. He died at age 99. Stephen Raymond said of his grandfather: "He

884-533: The late 1940s, three of which entered airline service. Total production including all military variants was 16,079. More than 400 remained in commercial service in 1998. Production was: Production of DSTs ended in mid-1941 and civilian DC-3 production ended in early 1943, although dozens of the DSTs and DC-3s ordered by airlines that were produced between 1941 and 1943 were pressed into the US military service while still on

918-403: The outside contractors on Project Gemini and Project Apollo until 1969. When Boeing and other aerospace firms proposed in the late 1960s to build a supersonic airliner with substantial subsidies from the US government, Raymond argued that the plane was not commercially viable. The USA government ceased subsidizing the design of the American supersonic transport in 1971, whereupon it died. At

952-402: The production line. Military versions were produced until the end of the war in 1945. A larger, more powerful Super DC-3 was launched in 1949 to positive reviews. The civilian market was flooded with second-hand C-47s, many of which were converted to passenger and cargo versions. Only five Super DC-3s were built, and three of them were delivered for commercial use. The prototype Super DC-3 served

986-524: The war effort and more than 10,000 U.S. military versions of the DC-3 were built, under the designations C-47, C-53, R4D, and Dakota . Peak production was reached in 1944, with 4,853 being delivered. The armed forces of many countries used the DC-3 and its military variants for the transport of troops, cargo, and wounded. Licensed copies of the DC-3 were built in Japan as the Showa L2D (487 aircraft); and in

1020-409: The way for the modern American air travel industry, which eventually replaced trains as the favored means of long-distance travel across the United States. A nonprofit group, Flagship Detroit Foundation, continues to operate the only original American Airlines Flagship DC-3 with air show and airport visits throughout the U.S. In 1936, KLM Royal Dutch Airlines received its first DC-3, which replaced

1054-483: Was engineered by a team led by chief engineer Arthur E. Raymond over the next two years, and the prototype DST (Douglas Sleeper Transport) first flew on December 17, 1935 (the 32nd anniversary of the Wright Brothers ' flight at Kitty Hawk) with Douglas chief test pilot Carl Cover at the controls. Its cabin was 92 in (2,300 mm) wide, and a version with 21 seats instead of the 14–16 sleeping berths of

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1088-523: Was retired July 12, 1976. The last U.S. Marine Corps C-117, serial 50835, was retired from active service during June 1982. Several remained in service with small airlines in North and South America in 2006. The United States Forest Service used the DC-3 for smoke jumping and general transportation until the last example was retired in December 2015. A number of aircraft companies attempted to design

1122-455: Was that of a smaller Douglas DC-2 in CNAC's workshops. The DC-2's right wing was removed, flown to Suifu under the belly of another CNAC DC-3, and bolted up to the damaged aircraft. After a single test flight, in which it was discovered that it pulled to the right due to the difference in wing sizes, the so-called DC-2½ was flown to safety. During World War II, many civilian DC-3s were drafted for

1156-524: Was the culmination of a development effort that began after an inquiry from Transcontinental and Western Airlines (TWA) to Donald Douglas . TWA's rival in transcontinental air service, United Airlines , was starting service with the Boeing 247 , and Boeing refused to sell any 247s to other airlines until United's order for 60 aircraft had been filled. TWA asked Douglas to design and build an aircraft that would allow TWA to compete with United. Douglas' design,

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