|
Southwest Airlines Flight 2294
Southwest Airlines Flight 2294 (WN2294/SWA2294) was a scheduled US passenger aircraft flight which suffered a rapid depressurization of the passenger cabin on July 13, 2009. The aircraft made an emergency landing at Yeager Airport (CRW) in Charleston, West Virginia, with no fatalities or major injuries to passengers and crew. An NTSB investigation found that the incident was caused by a failure in the fuselage skin due to metal fatigue. Incident The aircraft involved was a Boeing 737-3H4 N387SW, serial number 26602, operating a scheduled flight between Nashville, Tennessee (KBNA), and Baltimore, Maryland (KBWI). The aircraft took off and climbed for about 25 minutes, leveling off at a cruising altitude of approximately . At about 5:45 pm Eastern Standard Time, the aircraft experienced a rapid decompression event, causing the cabin altitude warning to be activated in the cockpit, indicating a dangerous drop in cabin pressure. Passenger oxygen masks deployed automatically. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid 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; for exampl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypoxia (medical)
Hypoxia is a condition in which the body or a region of the body is deprived of adequate oxygen supply at the tissue level. Hypoxia may be classified as either '' generalized'', affecting the whole body, or ''local'', affecting a region of the body. Although hypoxia is often a pathological condition, variations in arterial oxygen concentrations can be part of the normal physiology, for example, during strenuous physical exercise.. Hypoxia differs from hypoxemia and anoxemia, in that hypoxia refers to a state in which oxygen present in a tissue or the whole body is insufficient, whereas hypoxemia and anoxemia refer specifically to states that have low or no oxygen in the blood. Hypoxia in which there is complete absence of oxygen supply is referred to as anoxia. Hypoxia can be due to external causes, when the breathing gas is hypoxic, or internal causes, such as reduced effectiveness of gas transfer in the lungs, reduced capacity of the blood to carry oxygen, compromised general ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accidents And Incidents Involving The Boeing 737 Classic
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 2009
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2009 In West Virginia
9 (nine) is the natural number following and preceding . Evolution of the Arabic digit In the beginning, various Indians wrote a digit 9 similar in shape to the modern closing question mark without the bottom dot. The Kshatrapa, Andhra and Gupta started curving the bottom vertical line coming up with a -look-alike. The Nagari continued the bottom stroke to make a circle and enclose the 3-look-alike, in much the same way that the sign @ encircles a lowercase ''a''. As time went on, the enclosing circle became bigger and its line continued beyond the circle downwards, as the 3-look-alike became smaller. Soon, all that was left of the 3-look-alike was a squiggle. The Arabs simply connected that squiggle to the downward stroke at the middle and subsequent European change was purely cosmetic. While the shape of the glyph for the digit 9 has an ascender in most modern typefaces, in typefaces with text figures the character usually has a descender, as, for example, in . T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airliner Accidents And Incidents In West Virginia
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] |
List Of Boeing Customer Codes
Unique, fixed customer codes were used by Boeing Commercial Airplanes to denote the original customer for airframes produced as part of Boeing's 7x7 family of commercial aircraft from 1956 (except for the Boeing 787 Dreamliner), starting with the introduction of the 707, followed by the Boeing 717, Boeing 727, Boeing 737, Boeing 747, Boeing 757, Boeing 767 and Boeing 777 up until 2016. The codes are in the form of two letters and/or digits which are appended to the aircraft's model designator, as seen in the following examples: *A Boeing 707-100 ordered by Qantas with customer code 38 would be designated as 707-138. *A Boeing 717 ordered by Hawaiian Airlines with customer code 2A would be designated as 717-22A. *A Boeing 727-100 and 727-200 ordered by United Airlines with customer code 22 are designated as 727-022 (not -122) and 727-222 respectively. *A Boeing 737-700 and 737-800 ordered by Southwest Airlines with customer code H4 would be designated as 737-7H4 and 737-8H4 respe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing 737 Classic
The Boeing 737 Classic is a series of narrow-body airliners produced by Boeing Commercial Airplanes, the second generation of the Boeing 737 series of aircraft. Development began in 1979 and the first variant, the 737-300, first flew in February 1984 and entered service that December. The stretched 737-400 first flew in February 1988 and entered service later that year. The shortest variant, the 737-500, first flew in June 1989 and entered service in 1990. Compared to the original series, the classic series was re-engined with the CFM56, a high-bypass turbofan, for better fuel economy and had upgraded avionics. With a MTOW, it has a range of . At the -500 is similar in length to the original 737-200 and can fly 110 to 132 passengers. The -300 can seat 126 to 149 passengers while the -400 accommodates 147 to 168 seats. It competed with the McDonnell Douglas MD-80 series, then with the Airbus A320 family which prompted Boeing to update its offer with the 737 Next Gener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southwest Airlines Flight 812
Southwest Airlines Flight 812 was a Boeing 737-300 passenger jet that on April 1, 2011, suffered rapid depressurization while cruising at near Yuma, Arizona, leading to an emergency landing at Yuma International Airport. Two of the 123 people on board suffered minor injuries. The aircraft was operating Southwest Airlines' domestic scheduled service from Phoenix, Arizona, to Sacramento, California. The depressurization was caused by the structural failure of the fuselage skin, which produced a hole approximately long on the upper fuselage. The NTSB investigation revealed evidence of pre-existing metal fatigue, and determined the probable cause of the incident to be related to an error in the manufacturing process for joining fuselage crown skin panels. The incident was the second of this type in less than two years, following the structural failure of Southwest Airlines Flight 2294 in 2009, and led to the FAA increasing the inspection rate of certain airframes. Incident Fligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seattle Times
''The Seattle Times'' is a daily newspaper serving Seattle, Washington, United States. It was founded in 1891 and has been owned by the Blethen family since 1896. ''The Seattle Times'' has the largest circulation of any newspaper in Washington state and the Pacific Northwest region. The Seattle Times Company, which is owned by the Blethen family, holds 50.5% of the paper. McClatchy company owns 49.5% of the paper. ''The Seattle Times'' had a longstanding rivalry with the ''Seattle Post-Intelligencer'' newspaper until the latter ceased publication in 2009. Copies are sold at $2 daily in King & adjacent counties (except Island, Thurston & other WA counties, $2.5) or $3 Sundays/Thanksgiving Day (except Island, Thurston & other WA counties, $4). Prices are higher outside Washington state. History ''The Seattle Times'' originated as the ''Seattle Press-Times'', a four-page newspaper founded in 1891 with a daily circulation of 3,500, which Maine teacher and attorney Alden J. Blethen ... [...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] |
Cockpit Voice Recorder
A flight recorder is an electronic recording device placed in an aircraft for the purpose of facilitating the investigation of aviation accidents and incidents. The device may often be referred to as a "black box", an outdated name which has become a misnomer—they are now required to be painted bright orange, to aid in their recovery after accidents. There are two types of flight recording devices: the flight data recorder (FDR) preserves the recent history of the flight through the recording of dozens of parameters collected several times per second; the cockpit voice recorder (CVR) preserves the recent history of the sounds in the cockpit, including the conversation of the pilots. The two devices may be combined into a single unit. Together, the FDR and CVR objectively document the aircraft's flight history, which may assist in any later investigation. The two flight recorders are required by international regulation, overseen by the International Civil Aviation Organizat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Airliner Accidents And Incidents In West Virginia")
.jpg "Click for more on -> Seattle Times")
