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1999 South Dakota Learjet Crash
On October 25, 1999, a chartered Learjet 35 business jet was scheduled to fly from Orlando, Florida, United States to Dallas, Texas, United States. Early in the flight, the aircraft, which was climbing to its assigned altitude on autopilot, lost cabin pressure, and all six on board were incapacitated by hypoxia, a lack of oxygen in the brain and body. The aircraft continued climbing past its assigned altitude, then failed to make the westward turn toward Dallas over North Florida and continued on its northwestern course, flying over the southern and midwestern United States for almost four hours and . The plane ran out of fuel over South Dakota and crashed into a field near Aberdeen after an uncontrolled descent. The two pilots were Michael Kling and Stephanie Bellegarrigue. The four passengers on board were PGA golfer Payne Stewart; his agent, and former Alabama football QB, Robert Fraley; president of the agency, Van Ardan; and Bruce Borland, a golf architect with th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uncontrolled Decompression
Uncontrolled decompression is an unplanned drop in the pressure of a sealed system, such as an aircraft cabin or hyperbaric chamber, and typically results from human error, material fatigue, engineering failure, or impact, causing a pressure vessel to vent into its lower-pressure surroundings or fail to pressurize at all. Such decompression may be classed as ''explosive, rapid'', or ''slow'': * Explosive decompression (ED) is violent and too fast for air to escape safely from the lungs and other air-filled cavities in the body such as the sinuses and eustachian tubes, typically resulting in severe to fatal barotrauma. * Rapid decompression may be slow enough to allow cavities to vent but may still cause serious barotrauma or discomfort. * Slow or gradual decompression occurs so slowly that it may not be sensed before hypoxia sets in. Description The term ''uncontrolled decompression'' here refers to the unplanned depressurisation of vessels that are occupied by people; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiral Dive
The dynamic stability of an aircraft refers to how the aircraft behaves after it has been disturbed following steady non-oscillating flight. Longitudinal modes Oscillating motions can be described by two parameters, the period of time required for one complete oscillation, and the time required to damp to half-amplitude, or the time to double the amplitude for a dynamically unstable motion. The longitudinal motion consists of two distinct oscillations, a long-period oscillation called a phugoid mode and a short-period oscillation referred to as the short-period mode. Phugoid (longer period) oscillations The longer period mode, called the "phugoid mode" is the one in which there is a large-amplitude variation of air-speed, pitch angle, and altitude, but almost no angle-of-attack variation. The phugoid oscillation is a slow interchange of kinetic energy (velocity) and potential energy (height) about some equilibrium energy level as the aircraft attempts to re-establish the equil ... [...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 je ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanford, Florida
Sanford is a city in the central region of the U.S. state of Florida and the county seat of Seminole County. As of the 2020 census, its population was 61,051. Known as the "Historic Waterfront Gateway City", Sanford sits on the southern shore of Lake Monroe at the head of navigation on the St. Johns River. Native Americans first settled the area thousands of years before the city was formed. The Seminoles arrived in the area in the 18th century. During the Second Seminole War in 1836, the United States Army established Camp Monroe and built a road now known as Mellonville Avenue. Sanford is about northeast of Orlando. Sanford is home to Seminole State College of Florida and the Central Florida Zoo and Botanical Gardens. Its downtown attracts tourists with shops, restaurants, a marina, and a lakefront walking trail. The Orlando Sanford International Airport, in the heart of the town, functions as the secondary commercial airport for international and domestic carriers in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Registration
An aircraft registration is a code unique to a single aircraft, required by international convention to be marked on the exterior of every civil aircraft. The registration indicates the aircraft's country of registration, and functions much like an automobile license plate or a ship registration. This code must also appear in its Certificate of Registration, issued by the relevant civil aviation authority (CAA). An aircraft can only have one registration, in one jurisdiction, though it is changeable over the life of the aircraft. Legal provisions In accordance with the Convention on International Civil Aviation (also known as the Chicago Convention), all civil aircraft must be registered with a civil aviation authority (CAA) using procedures set by each country. Every country, even those not party to the Chicago Convention, has an NAA whose functions include the registration of civil aircraft. An aircraft can only be registered once, in one jurisdiction, at a time. The NAA al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about one second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, ''Standard-Frequency and Time-Signal Emissions'', in 1963, but the official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) were not adopted until 1967. The system has been adjusted several times, including a brief period during which the time-coordination radio signals broadcast both UTC and "Stepped Atomic Time (SAT)" before a new UTC was adopted in 1970 and implemented in 1972. This change ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Time Zone
The North American Central Time Zone (CT) is a time zone in parts of Canada, the United States, Mexico, Central America, some Caribbean Islands, and part of the Eastern Pacific Ocean. Central Standard Time (CST) is six hours behind Coordinated Universal Time (UTC). During summer, most of the zone uses daylight saving time (DST), and changes to Central Daylight Time (CDT) which is five hours behind UTC. The largest city in the Central Time Zone is Mexico City; the Mexico City metropolitan area is the largest metropolitan area in the zone and in North America. Regions using (North American) Central Time Canada The province of Manitoba is the only province or territory in Canada that observes Central Time in all areas. The following Canadian provinces and territories observe Central Time in the areas noted, while their other areas observe Eastern Time: * Nunavut (territory): western areas (most of Kivalliq Region and part of Qikiqtaaluk Region) * Ontario (province): a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Time Zone
The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States, parts of eastern Canada, the state of Quintana Roo in Mexico, Panama, Colombia, mainland Ecuador, Peru, and a small portion of westernmost Brazil in South America, along with certain Caribbean and Atlantic islands. Places that use: * Eastern Standard Time (EST), when observing standard time (autumn/winter), are five hours behind Coordinated Universal Time ( UTC−05:00). * Eastern Daylight Time (EDT), when observing daylight saving time (spring/summer), are four hours behind Coordinated Universal Time ( UTC−04:00). On the second Sunday in March, at 2:00 a.m. EST, clocks are advanced to 3:00 a.m. EDT leaving a one-hour "gap". On the first Sunday in November, at 2:00 a.m. EDT, clocks are moved back to 1:00 a.m. EST, thus "duplicating" one hour. Southern parts of the zone (Panama and the Caribbean) do not observe daylight saving ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jack Nicklaus
Jack William Nicklaus (born January 21, 1940), nicknamed The Golden Bear, is a retired American professional golfer and golf course designer. He is widely considered to be one of the greatest golfers of all time. He won 117 professional tournaments in his career. Over a quarter-century, he won a record 18 major championships, three more than second-placed Tiger Woods. Nicklaus focused on the major championships—the Masters Tournament, U.S. Open, Open Championship and PGA Championship—and played a selective schedule of regular PGA Tour events. He competed in 164 major tournaments, more than any other player, and finished with 73 PGA Tour victories, third behind Sam Snead (82) and Woods (82). Nicklaus won the U.S. Amateur in 1959 and 1961 and finished second in the 1960 U.S. Open, two shots behind Arnold Palmer. Nicklaus turned professional at age 21 toward the end of 1961. He earned his first professional victory at the 1962 U.S. Open, defeating Palmer by three sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruce Borland
Bruce Borland (November 4, 1958 – October 25, 1999) was an American golf course designer who worked for Jack Nicklaus. He died in the 1999 South Dakota Learjet crash on October 25, 1999 while traveling with golf Hall of Famer Payne Stewart. Early life and education Bruce Borland was raised in the Peoria, Illinois, area. He took a fascination with golf at an early age, building and maintaining a putting green in his parents' backyard, tending to it meticulously. Borland went on to graduate from the University of Illinois at Urbana-Champaign, with a degree in Landscape Architecture. Career After graduation, he moved to the Chicago area and began designing golf courses for several firms. In 1989, Borland opened his own design firm, ProDesign, just a year later he was offered a design position with Jack Nicklaus at Golden Bear International. Borland worked on many of the famous Jack Nicklaus "Signature" golf courses, as well as other stateside and Indonesian courses. Over h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alabama Crimson Tide Football
The Alabama Crimson Tide football program represents the University of Alabama (variously Alabama, UA, or Bama) in the sport of American football. The team competes in the Football Bowl Subdivision (FBS) of the National Collegiate Athletic Association (NCAA) and the Western Division of the Southeastern Conference (SEC). The team's head coach is Nick Saban, who has led the Tide to six national championships over his tenure. The Crimson Tide is among the most storied and decorated football programs in NCAA history. Since beginning play in 1892, the program claims 18 national championships, including 13 wire-service ( AP or Coaches') national titles in the poll-era, and five other titles before the poll-era. From 1958 to 1982, the team was led by Hall of Fame coach Paul "Bear" Bryant, who won six national titles with the program. Despite numerous national and conference championships, it was not until 2009 that an Alabama player received a Heisman Trophy, when running back Mark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
