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Ryan International Airlines Flight 590
Ryan International Airlines Flight 590 was a cargo flight carrying mail for the United States Postal Service from Greater Buffalo International Airport (BUF) in Buffalo, New York, to Indianapolis International Airport (IND) in Indiana, with a stopover at Cleveland Hopkins International Airport (CLE) in Cleveland, Ohio. On February 17, 1991, the McDonnell Douglas DC-9-15RC operating the flight crashed on takeoff from Cleveland during icing conditions. Both pilots, the aircraft's only occupants, were killed. The National Transportation Safety Board (NTSB) determined that the causes of the crash were the flight crew failing to deice their aircraft, and the inexperience of the Federal Aviation Administration (FAA), McDonnell Douglas, and Ryan International Airlines with icing condition on DC-9-10 aircraft (the shortest variant of the DC-9). Background Aircraft The aircraft involved was a 22-year-old McDonnell Douglas DC-9-15RC (Rapid Change) registered as N565PC. The -15 is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmospheric Icing
Atmospheric icing occurs in the atmosphere when water droplets suspended in air freezing, freeze on objects they come in contact with. It is not the same as freezing rain, which is caused directly by precipitation. Icing conditions can be particularly dangerous to aircraft, as the built-up ice changes the aerodynamics of the flight surfaces and airframe, which can increase the risk of a Stall (fluid dynamics), stall and potentially accidents. For this reason, on-board ice protection systems have been developed on aircraft intended to fly through these conditions. Water does not always freeze at . Water that persists in liquid state below this temperature is said to be supercooled, and supercooled water droplets cause icing on aircraft. Below , icing is rare because clouds at these temperatures usually consist of ice particles rather than supercooled water droplets. Below , supercooled water always freezes; therefore, icing is impossible. Icing also occurs on towers, wind turbines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hughes Airwest
Hughes Airwest was a regional airline in the western United States, backed by Howard Hughes' Summa Corporation. Its original name in 1968 was Air West and the air carrier was owned by Nick Bez. Hughes Airwest flew routes in the western U.S. and to several destinations in Mexico and Canada; its headquarters were on the grounds of San Francisco International Airport (SFO) in unincorporated San Mateo County, California. With distinctive all-yellow aircraft, the company slogan was ''Top Banana in the West''; Hughes Airwest was purchased by Republic Airlines on October 1, 1980. History On April 17, 1968, three "local service" airlines in the western U.S. merged to form Air West: * Pacific Air Lines, which previously operated as Southwest Airways when it was founded in 1941, was based in San Francisco, flew along the coast and California's Central Valley, linking cities from Medford, Oregon, to southern California. Pacific operated Boeing 727-100s and Fairch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airliner Accidents And Incidents In Ohio
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 carri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accidents And Incidents Involving The McDonnell Douglas DC-9
An accident is an unintended, normally unwanted event that was not directly caused by humans. The term ''accident'' implies that nobody should be blamed, but the event may have been caused by unrecognized or unaddressed risks. Most researchers who study unintentional injury avoid using the term ''accident'' and focus on factors that increase risk of severe injury and that reduce injury incidence and severity. For example, when a tree falls down during a wind storm, its fall may not have been caused by humans, but the tree's type, size, health, location, or improper maintenance may have contributed to the result. Most car wrecks are not true accidents; however English speakers started using that word in the mid-20th century as a result of media manipulation by the US automobile industry. Types Physical and non-physical Physical examples of accidents include unintended motor vehicle collisions, falls, being injured by touching something sharp or hot, or bumping into someth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviation Accidents And Incidents In The United States In 1991
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] |
Scandinavian Airlines System Flight 751
Scandinavian Airlines System Flight 751 was a regularly scheduled Scandinavian Airlines passenger flight from Stockholm, Sweden, to Warsaw, Poland, via Copenhagen, Denmark. On 27 December 1991, a McDonnell Douglas MD-81 operating the flight, registration OY-KHO, piloted by Danish Captain Stefan G. Rasmussen (44) and Swedish first officer Ulf Cedermark (34), both experienced pilots with 8,000 and 3,000 flight hours, respectively, was forced to make an emergency landing in a field near Gottröra, Sweden. Ice had collected on the wings' inner roots (close to the fuselage) before takeoff, broke off, and was ingested into the engines as the aircraft became airborne on takeoff, ultimately resulting in the failure of both engines. All 129 passengers and crew aboard survived. The incident is known as the Gottröra crash ( sv, Gottrörakraschen) or the Miracle at Gottröra ( sv, Miraklet i Gottröra) in Sweden. Aircraft The aircraft was a McDonnell Douglas MD-81, registered OY-KHO wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USAir Flight 405
USAir Flight 405 was a regularly scheduled domestic passenger flight between LaGuardia Airport in Queens, New York City, New York, and Cleveland, Ohio. On March 22, 1992, a USAir Fokker F28, registration flying the route, crashed in poor weather in a partially inverted position in Flushing Bay, shortly after liftoff from LaGuardia. The undercarriage lifted off from the runway, but the airplane failed to gain lift, flying only several meters above the ground. The aircraft then veered off the runway and hit several obstructions before coming to rest in Flushing Bay, just beyond the end of the runway. Of the 51 people on board, 27 were killed, including the captain and a member of the cabin crew. A similar accident had happened three years before, when Air Ontario Flight 1363 crashed shortly after takeoff at Dryden Regional Airport after ice had accumulated on the wings and airframe. Of the 69 passengers and crew, 24 were killed. The subsequent investigation revealed that due to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continental Airlines Flight 1713
Continental Airlines Flight 1713 was a commercial airline flight that crashed while taking off in a snowstorm from Stapleton International Airport in Denver, Colorado, on The Douglas DC-9 airliner, operated by Continental Airlines, was making a scheduled flight to Boise, Idaho. Twenty-five passengers and three crew members died in the crash. The National Transportation Safety Board (NTSB) investigation of the accident determined that the most probable cause of the accident was the failure on the part of the pilot in command to have the aircraft deiced a second time before takeoff. Background information Aircraft Flight 1713 was operated using a 21-year old McDonnell Douglas DC-9-14, a twin-engined, narrow-body jet airliner with the registration number N626TX. The aircraft was equipped with two Pratt & Whitney JT8D-7B engines. It was originally delivered to Air Canada in May 1966 and sold to Texas International Airlines in 1968, where it served the majority of its service un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Florida Flight 90
Air Florida Flight 90 was a scheduled U.S. domestic passenger flight operated by Air Florida from Washington National Airport (now Ronald Reagan Washington National Airport) to Fort Lauderdale–Hollywood International Airport, with an intermediate stopover at Tampa International Airport. On January 13, 1982, the Boeing 737-222 registered as N62AF crashed into the 14th Street Bridge over the Potomac River. Striking the bridge, which carries Interstate 395 between Washington, DC, and Arlington County, Virginia, it hit seven occupied vehicles and destroyed of guard rail before plunging through the ice into the Potomac River. The aircraft was carrying 74 passengers and five crew members. Only four passengers and one crew member (a flight attendant) were rescued from the crash and survived. Another passenger, Arland D. Williams, Jr., assisted in the rescue of the survivors, but drowned before he could be rescued. Four motorists on the bridge were killed. The survivors were res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ozark Air Lines Flight 982
Ozark Air Lines Flight 982 was a regularly scheduled flight on December 27, 1968, originating from Sioux Falls Regional Airport to O'Hare International Airport connecting through Sioux Gateway Airport that crashed shortly after takeoff. The plane struck the ground about 500 feet beyond the end of the runway and came to a stop about 1200 ft from the end of the runway. Thirty-five of the flight's 64 passengers and four crew members were taken to area hospitals, mostly for treatment of minor cuts and scratches. The flight was piloted by Capt. Patrick G. Sweeney, 48, of Wood River, IL. The copilot was John T. Schmeltz, 33, of St. Louis. Ozark Airlines began service in Sioux City on August 9, 1955. It was the first crash of a DC-9 jetliner for Ozark since the beginning of their use on July 8, 1966. According to the manager of Ozark's News Bureau in St. Louis, Charles R. Ehlert, it was the "first crash of any significance for the airline." The US$3 million aircraft () was a total loss. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stick Shaker
A stick shaker is a mechanical device designed to rapidly and noisily vibrate the control yoke (the "stick") of an aircraft, warning the flight crew that an imminent aerodynamic stall has been detected. It is typically present on the majority of large civil jet aircraft, as well as most large military planes. The stick shaker comprises a key component of an aircraft's stall protection system. Several accidents, such as the 1963 BAC One-Eleven test crash and American Airlines Flight 191, were attributable to aerodynamic stalls and motivated aviation regulatory bodies to establish requirements for certain aircraft to be outfitted with stall protection measures, such as the stick shaker and stick pusher, to reduce such occurrences. While the stick shaker has become relatively prevalent amongst airliners and large transport aircraft, such devices are not infallible and require flight crews to be appropriately trained on their functionality and how to respond to their activation. Sev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V Speeds
In aviation, V-speeds are standard terms used to define airspeeds important or useful to the operation of all aircraft. These speeds are derived from data obtained by aircraft designers and manufacturers during flight testing for aircraft type-certification. Using them is considered a best practice to maximize aviation safety, aircraft performance, or both. The actual speeds represented by these designators are specific to a particular model of aircraft. They are expressed by the aircraft's indicated airspeed (and not by, for example, the ground speed), so that pilots may use them directly, without having to apply correction factors, as aircraft instruments also show indicated airspeed. In general aviation aircraft, the most commonly used and most safety-critical airspeeds are displayed as color-coded arcs and lines located on the face of an aircraft's airspeed indicator. The lower ends of the white arc and the green arc are the stalling speed with wing flaps in landing conf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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