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Los Angeles Airways Flight 417
Los Angeles Airways Flight 417 was a Sikorsky S-61 helicopter that crashed on August 14, 1968 in the city of Compton, California. All eighteen passengers and three crew members were killed. The aircraft was destroyed by impact and fire. According to the National Transportation Safety Board the probable cause of the accident was fatigue failure. The accident happened when the (arbitrarily designated) yellow blade, one of five main rotor blades, separated at the spindle which attached the blade to the rotor head. Following failure, the helicopter was uncontrollable and it fell to the ground. The fatigue crack originated in an area of substandard hardness and inadequate shot peening. History Los Angeles Airways (LAA) Flight 417, piloted by Captain Kenneth Lee Waggoner, former USMC helicopter pilot, was a regularly scheduled passenger flight from Los Angeles International Airport to the Disneyland Heliport in Anaheim, California. The aircraft and crew had completed three round ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compton, California
Compton is a city in southern Los Angeles County, California, United States, situated south of downtown Los Angeles. Compton is one of the oldest cities in the county and, on May 11, 1888, was the eighth city in Los Angeles County to incorporate. As of the 2010 United States Census, the city had a total population of 96,456. It is known as the "Hub City" due to its geographic centrality in Los Angeles County. Neighborhoods in Compton include Sunny Cove, Leland, downtown Compton, and Richland Farms. The city has a high poverty rate and is generally a working-class community. Furthermore, Compton is known for its high crime rate. History The Spanish Empire had expanded into this area when the Viceroy of New Spain commissioned Juan Rodríguez Cabrillo to explore the Pacific Ocean in 1542–1543. In 1767, the area became part of the Province of the Californias ( es, Provincia de las Californias), and the area was explored by the Portolá expedition in 1769–1770. In 1784, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawthorne Municipal Airport (California)
Hawthorne Municipal Airport (Jack Northrop Field) is an airport in Hawthorne, in Los Angeles County, California, United States. Facilities The airport covers ; its one runway, 7/25, is concrete. It is effectively crammed into a very small space and is surrounded by residential areas on all sides. The airport is also in very close proximity to the considerably larger Los Angeles International Airport, so special consideration must be given attention to avoid encroaching on the LAX airspace. FBOs: * Hawthorne Hangar Operations *JetCenterLA Airport businesses: * Star Helicopters * Capital Jet Management History The name "Jack Northrop Field" comes from the Northrop Aircraft Corporation, founded by Jack Northrop, which for years designed, built and flew many classic airplanes including YB-35 flying wing, the P-61 Black Widow and F-89 Scorpion night fighters, the F-5 Freedom Fighter, and the T-38 Talon jet trainer. During World War II, the airfield was used by the United S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Accidents And Incidents Involving Commercial Aircraft
This list of accidents and incidents involving commercial aircraft includes notable events that have a corresponding Wikipedia article. Entries in this list involve passenger or cargo aircraft that are operating commercially and meet this list's size criteriapassenger aircraft with a seating capacity of at least 10 passengers, or commercial cargo aircraft of at least . The list is grouped by the year in which the accident or incident occurred. __NOTOC__ 1910s and 1920s 1919 * July 21 – The Goodyear dirigible ''Wingfoot Air Express'' catches fire and crashes into the Illinois Trust and Savings Building in Chicago, Illinois, while carrying passengers to a local amusement park, killing thirteen people: three out of the five on board and ten others on the ground, with 27 others on the ground being injured. * August 2 – A Caproni Ca.48 crashes at Verona, Italy, during a flight from Venice to Taliedo, Milan, killing all on board (14, 15, or 17 people, according to different ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airworthiness Directive
An Airworthiness Directive (commonly abbreviated as AD) is a notification to owners and operators of certified aircraft that a known safety deficiency with a particular model of aircraft, engine, avionics or other system exists and must be corrected. If a certified aircraft has outstanding airworthiness directives that have not been complied with, the aircraft is not considered airworthy. Thus, it is mandatory for an aircraft operator to comply with an AD. Purpose ADs usually result from service difficulty reporting by operators or from the results of aircraft accident investigations. They are issued either by the national civil aviation authority of the country of aircraft manufacture or of aircraft registration. When ADs are issued by the country of registration they are almost always coordinated with the civil aviation authority of the country of manufacture to ensure that conflicting ADs are not issued. In detail, the purpose of an AD is to notify aircraft owners: * that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Aviation Administration
The Federal Aviation Administration (FAA) is the largest transportation agency of the U.S. government and regulates all aspects of civil aviation in the country as well as over surrounding international waters. Its powers include air traffic management, certification of personnel and aircraft, setting standards for airports, and protection of U.S. assets during the launch or re-entry of commercial space vehicles. Powers over neighboring international waters were delegated to the FAA by authority of the International Civil Aviation Organization. Created in , the FAA replaced the former Civil Aeronautics Administration (CAA) and later became an agency within the U.S. Department of Transportation. Major functions The FAA's roles include: *Regulating U.S. commercial space transportation *Regulating air navigation facilities' geometric and flight inspection standards *Encouraging and developing civil aeronautics, including new aviation technology *Issuing, suspending, or revoki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Center Of Gravity Of An Aircraft
The center of gravity (CG) of an aircraft is the point over which the aircraft would balance. Its position is calculated after supporting the aircraft on at least two sets of weighing scales or load cells and noting the weight shown on each set of scales or load cells. The center of gravity affects the stability of the aircraft. To ensure the aircraft is safe to fly, the center of gravity must fall within specified limits established by the aircraft manufacturer. Terminology ;Ballast: Ballast is removable or permanently installed weight in an aircraft used to bring the center of gravity into the allowable range. ;Center-of-Gravity Limits: Center of gravity (CG) limits are specified longitudinal (forward and aft) and/or lateral (left and right) limits within which the aircraft's center of gravity must be located during flight. The CG limits are indicated in the airplane flight manual. The area between the limits is called the ''CG range'' of the aircraft. ;Weight and Balanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gross Weight
In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force. Yet others define it as the magnitude of the reaction force exerted on a body by mechanisms that counteract the effects of gravity: the weight is the quantity that is measured by, for example, a spring scale. Thus, in a state of free fall, the weight would be zero. In this sense of weight, terrestrial objects can be weightless: ignoring air resistance, the famous apple falling from the tree, on its way to meet the ground near Isaac Newton, would be weightless. The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jet Fuel
Jet fuel or aviation turbine fuel (ATF, also abbreviated avtur) is a type of aviation fuel designed for use in aircraft powered by gas-turbine engines. It is colorless to straw-colored in appearance. The most commonly used fuels for commercial aviation are Jet A and Jet A-1, which are produced to a standardized international specification. The only other jet fuel commonly used in civilian turbine-engine powered aviation is Jet B, which is used for its enhanced cold-weather performance. Jet fuel is a mixture of a variety of hydrocarbons. Because the exact composition of jet fuel varies widely based on petroleum source, it is impossible to define jet fuel as a ratio of specific hydrocarbons. Jet fuel is therefore defined as a performance specification rather than a chemical compound. Furthermore, the range of molecular mass between hydrocarbons (or different carbon numbers) is defined by the requirements for the product, such as the freezing point or smoke point. Kerosene-type jet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JP-4
JP-4, or JP4 (for "Jet Propellant") was a jet fuel, specified in 1951 by the U.S. government (MIL-DTL-5624). Its NATO code is F-40. It is also known as avtag. Usage JP-4 was a 50-50 kerosene-gasoline blend. It had a lower flash point than JP-1, but was preferred because of its greater availability. It was the primary U.S. Air Force jet fuel between 1951 and 1995. MC-77 is the Swedish military equivalent of JP-4. Mixture JP-4 was a mixture of aliphatic and aromatic hydrocarbons. It was a flammable transparent liquid with clear or straw color, and a kerosene-like smell. It evaporated easily and floated on water. Although it had a low flash point (), a lit match dropped into JP-4 would not ignite the mixture. JP-4 froze at , and its maximum burning temperature was . JP-4 was a non-conductive liquid, prone to build up static electricity when being moved through pipes and tanks. As it is volatile and has a low flash point, the static discharge could cause a fire. Beginning in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turboshaft
A turboshaft engine is a form of gas turbine that is optimized to produce shaftpower rather than jet thrust. In concept, turboshaft engines are very similar to turbojets, with additional turbine expansion to extract heat energy from the exhaust and convert it into output shaft power. They are even more similar to turboprops, with only minor differences, and a single engine is often sold in both forms. Turboshaft engines are commonly used in applications that require a sustained high power output, high reliability, small size, and light weight. These include helicopters, auxiliary power units, boats and ships, tanks, hovercraft, and stationary equipment. Overview A turboshaft engine may be made up of two major parts assemblies: the 'gas generator' and the 'power section'. The gas generator consists of the compressor, combustion chambers with ignitors and fuel nozzles, and one or more stages of turbine. The power section consists of additional stages of turbines, a gear reducti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Electric T58
The General Electric T58 is an American turboshaft engine developed for helicopter use. First run in 1955, it remained in production until 1984, by which time some 6,300 units had been built. On July 1, 1959, it became the first turbine engine to gain FAA certification for civil helicopter use. The engine was license-built and further developed by de Havilland in the UK as the Gnome, in the West Germany by Klöckner-Humboldt-Deutz, and also manufactured by Alfa Romeo and the IHI Corporation. Design and development Development commenced with a 1953 US Navy requirement for a helicopter turboshaft to weigh under 400 lb (180 kg) while delivering 800 hp (600 kW). The engine General Electric eventually built weighed only 250 lb (110 kg) and delivered 1,050 hp (780 kW) and was soon ordered into production. First flight was on a modified Sikorsky HSS-1 in 1957, and civil certification for the CT58-100 variant was obtained two years later. A numb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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