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Pan Am Flight 759
Pan Am Flight 759 was a regularly scheduled domestic passenger flight from Miami to San Diego, with en route stops in New Orleans and Las Vegas. On July 9, 1982, 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 air ... flying this route crashed in the New Orleans suburb of Kenner, Louisiana, Kenner after being forced down by a microburst shortly after takeoff. All 145 on board and 8 people on the ground were killed. Aircraft and crew The aircraft involved, a 14-year-old Boeing 727-200, Boeing 727-235, registration N4737, construction number 19457/518, was delivered to National Airlines (NA), National Airlines on January 31, 1968. The aircraft was powered by three Pratt & Whitney JT8D, Pratt & Whitney JT8D-7B turbofan engines, and was renamed from ''37 Susan/Erica'' to '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney JT8D
The Pratt & Whitney JT8D is a low-bypass (0.96 to 1) turbofan engine introduced by Pratt & Whitney in February 1963 with the inaugural flight of the Boeing 727. It was a modification of the Pratt & Whitney J52 turbojet engine which powered the US Navy A-6 Intruder and A-4 Skyhawk attack aircraft. Eight models comprise the JT8D standard engine family, covering the thrust range from 12,250 to 17,400 pounds-force (62 to 77 kN), and power 727, 737-100/200, and DC-9. The updated JT8D-200 family, covering the 18,900 to 21,000 pounds-force (84 to 93 kN), powers the MD-80 and re-engined Super 27 aircraft. The Volvo RM8 was license-built in Sweden for the Saab 37 Viggen fighter. Pratt & Whitney also sells static versions for powerplant and ship propulsion as the FT8. Design The JT8D is an axial-flow front turbofan engine incorporating a two-spool design. There are two coaxially-mounted independent rotating assemblies: one rotating assembly for the low pressure compr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airborne Wind Shear Detection And Alert System
The airborne wind shear detection and alert system, fitted in an aircraft, detects and alerts the pilot both visually and aurally of a wind shear condition. A reactive wind shear detection system is activated by the aircraft flying into an area with a wind shear condition of sufficient force to pose a hazard to the aircraft. A predictive wind shear detection system is activated by the presence of a wind shear condition ahead of the aircraft. In 1988, the U.S. Federal Aviation Administration (FAA) mandated that all turbine-powered commercial aircraft must have on-board wind shear detection systems by 1993. Airlines successfully lobbied to have commercial turbo-prop aircraft exempted from this requirement. In the predictive wind shear detection mode, the weather radar processor of the aircraft detects the presence of a microburst, a type of vertical wind shear condition, by detecting the Doppler frequency shift of the microwave pulses caused by the microburst ahead of the aircraft, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delta Air Lines Flight 191
Delta Air Lines Flight 191 was a regularly scheduled Delta Air Lines domestic service from Fort Lauderdale, Florida, to Los Angeles with an intermediate stop at Dallas/Fort Worth International Airport (DFW). On August 2, 1985, the Lockheed L-1011 TriStar operating Flight 191 encountered a microburst while on approach to land at DFW. The aircraft impacted ground over short of the runway, struck a car near the airport, collided with two water tanks, and disintegrated. The crash killed 137 people and injured 26 others. The National Transportation Safety Board (NTSB) determined that the crash resulted from the flight crew's decision to fly through a thunderstorm, the lack of procedures or training to avoid or escape microbursts, and the lack of hazard information on wind shear. Involved Aircraft The aircraft was a Lockheed L-1011-385-1 TriStar ( registration number N726DA). It was delivered to Delta on February 28, 1979, and the airline had operated it continuously since t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital media, digital subscribers. It also is a producer of popular podcasts such as ''The Daily (podcast), The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones (publisher), George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won List of Pulitzer Prizes awarded to The New York Times, 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national "newspaper of record". For print it is ranked List of newspapers by circulation, 18th in the world by circulation and List of newspapers in the United States, 3rd in the U.S. The paper is owned by the New York Times Company, which is Public company, publicly traded. It has been governed by the Sulzberger family since 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Headwind
A tailwind is a wind that blows in the direction of travel of an object, while a headwind blows against the direction of travel. A tailwind increases the object's speed and reduces the time required to reach its destination, while a headwind has the opposite effect. The terms are also used metaphorically in business and elsewhere about circumstances where progress is made harder (headwind) or easier (tailwind). Travel In aeronautics, a headwind is favorable in takeoffs and landings because an airfoil moving into a headwind is capable of generating greater lift than the same airfoil moving through tranquil air, or with a tailwind, at equal ground speed. As a result, aviators and air traffic controllers commonly choose to take off or land in the direction of a runway that will provide a headwind. Aircraft carriers usually turn into the wind during takeoffs and landings, and may increase their own speed. While on take-off and landing, headwinds are good because they allow th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Downdraft
In meteorology, an updraft is a small-scale current of rising air, often within a cloud. Overview Localized regions of warm or cool air will exhibit vertical movement. A mass of warm air will typically be less dense than the surrounding region, and so will rise until it reaches air that is either warmer or less dense than itself. The converse will occur for a mass of cool air, and is known as subsidence. This movement of large volumes of air, especially when regions of hot, wet air rise, can create large clouds, and is the central source of thunderstorms. Drafts can also be conceived by low or high pressure regions. A low pressure region will attract air from the surrounding area, which will move towards the center and then rise, creating an updraft. A high pressure region will attract air from the surrounding area, which will move towards the center and sink, spawning a downdraft. Updrafts and downdrafts, along with wind shear in general, are a major contributor to airplane cra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Shear
Wind shear (or windshear), sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical or horizontal wind shear. Vertical wind shear is a change in wind speed or direction with a change in altitude. Horizontal wind shear is a change in wind speed with a change in lateral position for a given altitude. Wind shear is a microscale meteorological phenomenon occurring over a very small distance, but it can be associated with mesoscale or synoptic scale weather features such as squall lines and cold fronts. It is commonly observed near microbursts and downbursts caused by thunderstorms, fronts, areas of locally higher low-level winds referred to as low-level jets, near mountains, radiation inversions that occur due to clear skies and calm winds, buildings, wind turbines, and sailboats. Wind shear has significant effects on the control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advance Publications
Advance Publications, Inc., doing business as Advance, is an American media company owned by the descendants of S.I. Newhouse Sr., Donald Newhouse and S.I. Newhouse Jr. It owns a large number of subsidiary companies, including Condé Nast, and is a major shareholder in Reddit. History The company is named after the '' Staten Island Advance'', the first newspaper owned by the Newhouse family, in which Sam Newhouse bought a controlling interest in 1922. In August 2018, Advance/Newhouse ("A/N") notified Charter Communications that it intended to establish a credit facility collateralized by a portion of Advance/Newhouse Common Units in Charter Communications Holdings, LLC. That same month, Condé Nast CEO Robert A. Sauerberg Jr. announced his five-year strategy to generate $600 million in new revenue from new revenue streams while driving costs out of the business. In March 2020, the company acquired The Ironman Group, a mass participation sports platform including the Ironm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Times-Picayune
''The Times-Picayune/The New Orleans Advocate'' is an American newspaper published in New Orleans, Louisiana, since January 25, 1837. The current publication is the result of the 2019 acquisition of ''The Times-Picayune'' (itself a result of the 1914 union of ''The Picayune'' with the ''Times-Democrat'') by the New Orleans edition of '' The Advocate'' (based in Baton Rouge), which began publication in 2013 as a response to ''The Times-Picayune'' switching from a daily publication schedule to a Wednesday/Friday/Sunday schedule in October 2012 (''The Times-Picayune'' resumed daily publication in 2014). ''The Times-Picayune'' was awarded the Pulitzer Prize for Public Service in 2006 for its coverage of Hurricane Katrina. Four of ''The Times-Picayune'''s staff reporters also received Pulitzers for breaking-news reporting for their coverage of the storm. The paper funds the Edgar A. Poe Award for journalistic excellence, which is presented annually by the White House Corresponde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WWL-TV
WWL-TV (channel 4) is a television station in New Orleans, Louisiana, United States, affiliated with CBS. It is owned by Tegna Inc. alongside Slidell-licensed MyNetworkTV affiliate WUPL (channel 54). Both stations share studios on Rampart Street in the historic French Quarter district, while WWL-TV's transmitter is located on Cooper Road in Terrytown, Louisiana. WWL-TV formerly served as the CBS affiliate of record for the Gulf Coast region of Mississippi, until ABC affiliate WLOX (channel 13) in Biloxi launched a CBS-affiliated digital subchannel in 2012. History Early history The station first signed on the air on September 7, 1957. Coincidentally, it was the fourth television station (and the third commercial station) to sign on in the New Orleans media market, behind WDSU-TV (channel 6), WJMR-TV (channel 61, now WVUE-DT on channel 8) and non-commercial WYES-TV (channel 8, now on channel 12)—all signing on in under a timeframe of nine years. It was originally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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