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1971 January 31 Surgut Aeroflot Antonov An-12 Crash
The 31 January 1971 Surgut Aeroflot Antonov An-12 crash occurred on 31 January 1971, when an Aeroflot Antonov An-12B, aircraft registration CCCP-12996, flying from Roshchino International Airport, Tyumen, in the Soviet Unions Russian Soviet Federated Socialist Republic (RSFSR), crashed short of the runway on approach to Surgut International Airport, Surgut, RSFSR. An investigation found the aircraft's loss of control was caused by icing. Aircraft The aircraft involved in the incident was an Antonov AN-12B with the aircraft registration number 12996 (Factory number - 00347403, a serial number giving some basic information about the aircraft: 00 for the last digit of the year of manufacture - 1970, 34 for the factory of origin - the Tashkent aviation factory, 74 for the production batch and 03 for the individual aircraft within that batch), this aircraft left the production line of the V. P. Chkalov Tashkent aviation production association on the 31st of August 1970 and handed ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antonov An-12
The Antonov An-12 ( Russian: Антонов Ан-12; NATO reporting name: Cub) is a four-engined turboprop transport aircraft designed in the Soviet Union. It is the military version of the Antonov An-10 and has many variants. For more than three decades the An-12 was the standard medium-range cargo and paratroop transport aircraft of the Soviet air forces. A total of 1,248 were eventually built. Design and development Developed from the Antonov An-8, the An-12 was a military version of the An-10 passenger transport. The first prototype An-12 flew in December 1957 and entered Soviet military service in 1959. Initially, the aircraft was produced at the State Aviation Factory in Irkutsk. From 1962, production was transferred to Tashkent, where 830 were built. Later, production moved to Voronezh and Kazan. In military use, the An-12 has capacity for up to 100 fully equipped paratroopers or 20,000 kg (44,090 lb) of cargo, which is loaded through the rear loading ramp/door. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Level
In aviation and aviation meteorology, a flight level (FL) is an aircraft's altitude at standard air pressure, expressed in hundreds of feet. The air pressure is computed assuming an International Standard Atmosphere pressure of 1013.25 hPa (29.92 inHg) at sea level, and therefore is not necessarily the same as the aircraft's actual altitude, either above sea level or above ground level. Background Flight levels are used to ensure safe vertical separation between aircraft, despite natural local variations in atmospheric air pressure. Historically, altitude has been measured using a pressure altimeter, which is essentially a calibrated barometer. An altimeter measures ambient air pressure, which decreases with increasing altitude following the barometric formula. It then calculates and displays the corresponding altitude. If different aircraft's altimeters were not calibrated consistently, then two aircraft could be flying at the same altitude even though th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1971 In The Soviet Union
The following lists events that happened during 1971 in the Union of Soviet Socialist Republics. Incumbents * General Secretary of the Communist Party of the Soviet Union: Leonid Brezhnev * Premier of the Soviet Union: Nikolai Bulganin * Chairman of the Russian SFSR: Mikhail Yasnov Events April * April 19 - The Soviet Union launches ''Salyut 1''."Soviet Sends Another Space Vehicle Into Orbit", ''The New York Times'', April 19, 1971, p4 Births * February 27 - Zaal Udumashvili, Georgian politician * April 21 - Valentin Morkov, Russian professional football coach and a former player Deaths * January 10 - Nadezhda Peshkova, artist (born 1901) * June 18 - Vladimir Biryukov, lexicographer (born 1888) * July 22 - Roman Mashkov, military intelligence officer (born 1922) *September 11 - Nikita Khrushchev, former First Secretary of the Communist Party of the Soviet Union (born 1894) * September 28 - Vasily Butusov, footballer (born 1892) References See also *1971 in fine arts o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeroflot Accidents And Incidents
Founded in 1923, Aeroflot, the flag carrier and largest airline of Russia (and formerly the Soviet Union) (formerly the world's largest airline), has had a high number of fatal crashes, with a total of 8,231 passengers dying in Aeroflot crashes according to the Aircraft Crashes Record Office, mostly during the Soviet-era, about five times more than any other airline. From 1946 to 1989, the carrier was involved in 721 incidents. From 1995 to 2017, the carrier was involved in 10 incidents. In 2013, AirlineRatings.com reported that five of the ten aircraft models involved in the highest numbers of fatal accidents were old Soviet models. Following is a list of accidents and incidents Aeroflot experienced from 1932 to the present. 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s * On 21 September 2001, Ilyushin Il-86 (RA-86074) landed gear-up at Dubai Airport due to pilot error; all 322 passengers and crew survived, but the aircraft was written off. The aircraft was op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airliner Accidents And Incidents Caused By Ice
An airliner is a type of aircraft for transporting passengers and air cargo. Such aircraft are most often operated by airlines. Although the definition of an airliner can vary from country to country, an airliner is typically defined as an airplane intended for carrying multiple passengers or cargo in commercial service. The largest of them are wide-body jets which are also called twin-aisle because they generally have two separate aisles running from the front to the back of the passenger cabin. These are usually used for long-haul flights between airline hubs and major cities. A smaller, more common class of airliners is the narrow-body or single-aisle. These are generally used for short to medium-distance flights with fewer passengers than their wide-body counterparts. Regional airliners typically seat fewer than 100 passengers and may be powered by turbofans or turboprops. These airliners are the non- mainline counterparts to the larger aircraft operated by the major carr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviation Accidents And Incidents In The Soviet Union
Aviation includes the activities surrounding mechanical flight and the aircraft industry. ''Aircraft'' includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air craft such as hot air balloons and airships. Aviation began in the 18th century with the development of the hot air balloon, an apparatus capable of atmospheric displacement through buoyancy. Some of the most significant advancements in aviation technology came with the controlled gliding flying of Otto Lilienthal in 1896; then a large step in significance came with the construction of the first powered airplane by the Wright brothers in the early 1900s. Since that time, aviation has been technologically revolutionized by the introduction of the jet which permitted a major form of transport throughout the world. Etymology The word ''aviation'' was coined by the French writer and former naval officer Gabriel La Landelle in 1863. He derived the term from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviation Accidents And Incidents In 1971
Aviation includes the activities surrounding mechanical flight and the aircraft industry. ''Aircraft'' includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air craft such as hot air balloons and airships. Aviation began in the 18th century with the development of the hot air balloon, an apparatus capable of atmospheric displacement through buoyancy. Some of the most significant advancements in aviation technology came with the controlled gliding flying of Otto Lilienthal in 1896; then a large step in significance came with the construction of the first powered airplane by the Wright brothers in the early 1900s. Since that time, aviation has been technologically revolutionized by the introduction of the jet which permitted a major form of transport throughout the world. Etymology The word ''aviation'' was coined by the French writer and former naval officer Gabriel La Landelle in 1863. He derived the term from the v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1971 January 22 Surgut Aeroflot Antonov An-12 Crash
The 1971 January 22 Surgut Aeroflot Antonov An-12 crash occurred on 22 January 1971, when an Aeroflot Antonov An-12B, registered ''CCCP-11000'', flying from Omsk Tsentralny Airport, in the Soviet Unions (RSFSR), crashed short of the runway on approach to Surgut International Airport, Surgut, RSFSR. An investigation found the aircraft's ice protection system was ineffective because the engine bleed air valves were closed during the flight; ice therefore built up on the aircraft causing it to go out of control. Aircraft The aircraft was an Antonov AN-12B with the aircraft registration 11000 (factory number - 5343610, a serial number showing some basic information about the aircraft, 5 for the last digit of the year of manufacture - 1965, 34 for the factory of origin - the Tashkent aviation factory, 36 for the production batch and 10 for the individual aircraft within that batch) this aircraft left the production line of the V. P. Chkalov Tashkent aviation production associati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flow Separation
In fluid dynamics, flow separation or boundary layer separation is the detachment of a boundary layer from a surface into a wake. A boundary layer exists whenever there is relative movement between a fluid and a solid surface with viscous forces present in the layer of fluid close to the surface. The flow can be externally, around a body, or internally, in an enclosed passage. Boundary layers can be either laminar or turbulent. A reasonable assessment of whether the boundary layer will be laminar or turbulent can be made by calculating the Reynolds number of the local flow conditions. Separation occurs in flow that is slowing down, with pressure increasing, after passing the thickest part of a streamline body or passing through a widening passage, for example. Flowing against an increasing pressure is known as flowing in an adverse pressure gradient. The boundary layer separates when it has travelled far enough in an adverse pressure gradient that the speed of the bound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icing Conditions
In aviation, icing conditions are atmospheric conditions that can lead to the formation of water ice on an aircraft. Ice accretion and accumulation can affect the external surfaces of an aircraft – in which case it is referred to as ''airframe icing'' – or the engine, resulting in carburetor icing, air inlet icing or more generically ''engine icing''. These phenomena may possibly but do not necessarily occur together. Both airframe and engine icing have resulted in numerous fatal accidents in aviation history. Not all aircraft, especially general aviation aircraft, are certified for ''flight into known icing'' (FIKI) – that is flying into areas with icing conditions certain or likely to exist, based on pilot reports, observations, and forecasts. In order to be FIKI-certified, aircraft must be fitted with suitable ice protection systems to prevent accidents by icing. Definition Icing conditions exist when the air contains droplets of supercooled liquid water. They freeze o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airfield Traffic Pattern
An airfield traffic pattern is a standard path followed by aircraft when taking off or landing while maintaining visual contact with the airfield. At an airport, the pattern (or circuit) is a standard path for coordinating air traffic. It differs from "straight-in approaches" and "direct climb-outs" in that aircraft using a traffic pattern remain close to the airport. Patterns are usually employed at small general aviation (GA) airfields and military airbases. Many large controlled airports avoid the system unless there is GA activity as well as commercial flights. However, some kind of a pattern may be used at airports in some cases such as when an aircraft is required to go around, but this kind of pattern at controlled airports may be very different in form, shape, and purpose to the standard traffic pattern as used at GA airports. The use of a pattern at airfields is for aviation safety. By using a consistent flight pattern, pilots will know from where to expect other air tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Altitude
Pressure altitude is the altitude in the International Standard Atmosphere (ISA) with the same atmospheric pressure as that of the part of the atmosphere in question. The National Oceanic and Atmospheric Administration (NOAA) published the following formula for directly converting atmospheric pressure in millibars ( \mathrm ) to pressure altitude in feet ( \mathrm ): : h = 145366.45 \left 1 - \left( \frac \right)^ \right In aviation, pressure altitude is the height above a standard datum plane (SDP), which is a theoretical level where the weight of the atmosphere is as measured by a barometer.Pilot’s Handbook of Aeronautical Knowledge (FAA-H-8083-25B), 2016, Chapter 4, p 4-4 It indicates altitude obtained when an altimeter is set to an agreed baseline pressure under certain circumstances in which the aircraft’s altimeter would be unable to give a useful altitude readout. Examples would be landing at a high altitude or near sea level under conditions of exceptionally high air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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