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51-572: The Il-14 was developed as a replacement for the widespread Douglas DC-3 and its Soviet built version, the Lisunov Li-2 . A development of the earlier Ilyushin Il-12 , (that first flew in 1945), the Il-14 was intended for use in both military and civil applications. The Il-12 had major problems with poor engine-out behaviour. Also, it had less payload capability than was originally planned (although

102-507: 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,

153-577: 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 Continental United States The contiguous United States (officially the conterminous United States ) consists of the 48 adjoining U.S. states and the District of Columbia of the United States in central North America . The term excludes

204-464: A density of 111.04 inhabitants/sq mi (42.872/km ), compared to 93.844/sq mi (36.233/km ) for the nation as a whole. While conterminous U.S. has the precise meaning of contiguous U.S. (both adjectives meaning "sharing a common boundary"), other terms commonly used to describe the 48 contiguous states have a greater degree of ambiguity. Because Alaska is also a part of North America , the term continental United States also includes that state, so

255-441: A state, it was properly included within the continental U.S. due to being an incorporated territory . The term mainland United States is sometimes used synonymously with continental United States , but technically refers only to those parts of states connected to the landmass of North America, thereby excluding not only Hawaii and overseas insular areas , but also islands which are part of continental states but separated from

306-456: A team of aero enthusiasts. There was also one Il-14 that was possibly airworthy in the United States , but its registration was cancelled in July 2014. Data from The Encyclopedia of World Aircraft General characteristics Performance Related development Related lists The initial version of this article was based on material from aviation.ru . It has been released under

357-685: 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

408-506: 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

459-399: 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,

510-837: 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

561-469: Is actual land, composing 83.65 percent of the country's total land area, and is comparable in size to the area of Australia. Officially, 160,820.25 square miles (416,522.5 km ) of the contiguous United States is water area, composing 62.66 percent of the nation's total water area. The contiguous United States, if it were a country, would be fifth on the list of countries and dependencies by area , behind Russia , Canada , China , and Brazil . However,

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612-801: Is also on North America, but separated from the 48 states by British Columbia in Canada, but excludes Hawaii and all the insular areas in the Caribbean and the Pacific . The greatest distance (on a great-circle route) entirely within the contiguous U.S. is 2,802 miles (4,509 km), coast-to-coast between Florida and the State of Washington ; the greatest north–south line is 1,650 miles (2,660 km). The contiguous United States occupies an area of 3,119,884.69 square miles (8,080,464.3 km ). Of this area, 2,959,064.44 square miles (7,663,941.7 km )

663-615: Is estimated about 150 are still flying. "DC" stands for "Douglas Commercial". The DC-3 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,

714-601: The GFDL by the copyright holder. DC-3 The Douglas DC-3 is a propeller -driven airliner manufactured by Douglas Aircraft Company , which had 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

765-582: The Northwest Angle in Minnesota are three such places. Alburgh, Vermont , is not directly connected by land, but is accessible by road via bridges from within Vermont and from New York. By contrast, Hyder, Alaska , is physically part of contiguous Alaska and its easternmost town, but the only practical access is by road through Canada or by seaplane. The 48 contiguous states are: In addition,

816-628: The South Pacific Ocean in Polynesia , south of the equator — it is 2,200 miles (3,500 km) southwest of Hawaii . In American Samoa, the contiguous United States is called the "mainland United States" or "the states"; those not from American Samoa are called palagi (outsiders). Apart from off-shore U.S. islands , a few continental portions of the contiguous United States are accessible by road only by traveling through Canada. Point Roberts, Washington ; Elm Point, Minnesota ; and

867-698: 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

918-845: 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

969-674: The 49th state of the United States on January 3, 1959. Alaska is the northwest extremity of the North American continent, separated from the U.S. West Coast by the Canadian province of British Columbia . The term Lower 48 has, for many years, been a common Alaskan equivalent for "contiguous United States"; today, many Alaskans use the term "Outside" for those states, though some may use "Outside" to refer to any location not within Alaska. The territory of Hawaii , consisting of

1020-521: 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

1071-493: 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

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1122-629: The DC-3s originally built for civil service had the Wright R-1820 Cyclone , later civilian DC-3s used 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

1173-483: 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

1224-645: The District of Columbia who were born in, or can trace their family ancestry to, Puerto Rico. The U.S. Virgin Islands is a U.S. territory located directly to the east of Puerto Rico in the Caribbean Sea. The term "stateside" is used to refer to the mainland, in relation to the U.S. Virgin Islands (see Stateside Virgin Islands Americans ). American Samoa is a U.S. territory located in

1275-412: The Il-12 was intended to carry 32 passengers, in service it only carried 18, which was uneconomical). The development into the Il-14 was a vast improvement over the Il-12, with a new wing and a broader tailfin. It was powered by two 1,400 kW (1,900 hp) Shvetsov ASh-82 T-7 radial piston engines. These changes greatly improved aerodynamic performance in engine-out conditions. Total production of

1326-644: The Il-14 was 1,345 aircraft: 1,065 in Moscow (Moscow Machinery Plant Nr.30) from 1956 to 1958 and Tashkent (Factory Nr.84) from 1954 to 1958. Licensed production of 80 in East Germany by VEB Flugzeugwerke Dresden (FWD) from 1956 to 1959 and 203 in Czechoslovakia by Avia in Prague, from 1956 to 1960. It was rugged and reliable, and thus was widely used in rural areas with poor quality airfields. The type

1377-764: The Ilyushin Il-14. Very few examples remain airworthy, with some still in use for freight duties, and a handful maintained by aviation clubs and enthusiasts. Today only three aircraft remain airworthy in Russia : one, called "Soviet Union" at Gorelovo airfield near St. Petersburg , another, called "Penguin" has performed its maiden flight after restoration on 1.10.2012 and now is based at Stupino airfield near Moscow . The third aircraft, called "The Blue Dream" performed its maiden flight from Tushino airfield to Stupino airfield in May 2014 after more than 10 years repair performed by

1428-706: The Interior by the American military organizations of the time—the future states of Alaska and Hawaii , then each only organized incorporated territories of the Union, were respectively covered by the Eleventh Air Force and Seventh Air Force during the war. Residents of Alaska, Hawaii and off-shore U.S. territories have unique labels for the contiguous United States because of their own locations relative to them. The vast territory of Alaska became

1479-629: 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

1530-508: 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,

1581-529: 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

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1632-629: 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

1683-472: The airliner market, around ninety percent of airline flights on the planet were by 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

1734-404: The continental United States, and as the 48 contiguous states. The District of Columbia is not always specifically mentioned as being part of CONUS . OCONUS is derived from CONUS with O for outside added, thus referring to Outside of Continental United States. The term lower 48 is also used to refer to the conterminous United States. The National Geographic style guide recommends

1785-682: 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 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

1836-503: The entire Hawaiian Islands archipelago except for Midway Atoll , became the 50th state of the United States on August 21, 1959. It is the southernmost U.S. state, and the latest one to join the Union. Not part of any continent, Hawaii is located in the Pacific Ocean , about 2,200 miles (3,541 km) from North America and almost halfway between North America and Asia . In Hawaii and overseas American territories , for instance,

1887-533: 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

1938-596: The mainland, such as the Aleutian Islands ( Alaska ), San Juan Islands ( Washington ), the Channel Islands ( California ), the Keys ( Florida ), the barrier islands ( Gulf and East Coast states), and Long Island (New York). CONUS , a technical term used by the U.S. Department of Defense , General Services Administration , NOAA/National Weather Service , and others, has been defined both as

1989-566: The only two non- contiguous states, which are Alaska and Hawaii (they are also the last two states to be admitted to the Union ), and all other offshore insular areas , such as the U.S. territories of American Samoa , Guam , the Northern Mariana Islands , Puerto Rico , and the U.S. Virgin Islands . The colloquial term " Lower   48 " is also used, especially in relation to Alaska. The related but distinct term continental United States includes Alaska, which

2040-402: 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

2091-683: The term is qualified with the explicit inclusion of Alaska to resolve any ambiguity. On May 14, 1959, the United States Board on Geographic Names issued the following definitions based partially on the reference in the Alaska Omnibus Bill, which defined the continental United States as "the 49 States on the North American Continent and the District of Columbia..." The Board reaffirmed these definitions on May 13, 1999. However, even before Alaska became

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2142-648: The terms the Mainland or U.S. Mainland are often used to refer to the 49 states in North America. Puerto Rico is an unincorporated territory of the United States located in the northeast Caribbean Sea , approximately 1,000 miles (1,609 km) southeast of Miami , Florida . Puerto Ricans born in Puerto Rico are U.S. citizens and are free to move to the mainland United States. The term Stateside Puerto Rican refers to residents of any U.S. state or

2193-411: The total area of the United States, including Alaska and Hawaii, ranks third or fourth. Brazil is 431,000 square kilometers (166,000 sq mi) larger than the contiguous United States, but smaller than the entire United States including Alaska, Hawaii and overseas territories. The 2020 U.S. census population of the area was 328,571,074, comprising 99.13 percent of the nation's total population, and

2244-587: The use of contiguous or conterminous United States instead of lower 48 when the 48 states are meant, unless used in the context of Alaska. Almost all of Hawaii is south of the southernmost point of the conterminous United States in Florida. During World War II , the first four numbered Air Forces of the United States Army Air Forces (USAAF) were said to be assigned to the Zone of

2295-524: 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

2346-409: 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

2397-640: Was also used by the East German aircraft industry as a test aircraft for the horizontal stabilizer of the Baade 152 . The Il-14 operated in the Soviet Union until the 1980s and early 90s, and other nations like Cuba and Vietnam . However, the unlicensed Chinese built Y-6 remained in the People's Liberation Army Air Force as a trainer until the late 1980s. There are no current military operators of

2448-483: 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

2499-485: Was fast, had a good range, was more reliable, and carried passengers in greater comfort. Before 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

2550-523: 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

2601-455: 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

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