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Pan Am Flight 806
Pan Am Flight 806 was an international scheduled flight from Auckland, New Zealand, to Los Angeles, California, with intermediate stops at Pago Pago, American Samoa and Honolulu, Hawaii. On January 30, 1974, the Boeing 707 ''Clipper Radiant'' crashed on approach to Pago Pago International Airport, killing 87 passengers and ten crew members, making it the deadliest aviation incident in American Samoan history. The National Transportation Safety Board (NTSB) determined the probable cause of the accident was the flight crew's tardy identification of microburst-induced wind shear. Other factors included poor visibility, a lack of altitude, and airspeed callouts by the aircrew. Aircraft and flight crew The aircraft involved was a Boeing 707-321B powered by Pratt & Whitney JT3D-3B engines.The Pratt & Whitney engine was regustered ''N454PA'' with manufacturer's serial number 19376/661. It had accumulated 21,625 airframe hours since its first flight in 1967. This 707 was piloted b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Controlled Flight Into Terrain
In aviation, a controlled flight into terrain (CFIT; usually ) is an aviation accidents and incidents, accident in which an airworthy aircraft, fully under pilot control, is unintentionally flown into the ground, a body of water or other obstacle. In a typical CFIT scenario, the aircrew, crew is unaware of the impending collision until impact, or it is too late to avert. The term was coined by engineers at Boeing in the late 1970s. Accidents where the aircraft is out of control at the time of impact, because of mechanical failure or pilot error, are classified instead as uncontrolled flight into terrain, or UFIT. Incidents resulting from the deliberate action of the person at the controls, such as a forced landing, an act of terrorism, or suicide by pilot, are also excluded from the definition of CFIT. According to Boeing in 1997, CFIT was a leading cause of airplane accidents involving the loss of life, causing over 9,000 deaths since the beginning of the commercial jet aircra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt & Whitney JT3D
The Pratt & Whitney JT3D is an early turbofan aircraft engine derived from the Pratt & Whitney J57, Pratt & Whitney JT3C turbojet. It was first run in 1958 and was first flown in 1959 under a B-45 Tornado test aircraft. Over 8,000 JT3Ds were produced between 1959 and 1985. Most JT3D engines still in service today are used on military aircraft, where the engine is referred to by its US military designation of TF33. Design and development Aware of the competition from the Rolls-Royce Conway turbofan, Pratt & Whitney decided to develop the JT3D turbofan from the JT3C turbojet for later deliveries of the Boeing 707 and the Douglas DC-8, then nearing entry into service. A 2-stage fan replaced the first 3 stages of the 9-stage JT3C LP compressor. On the LP turbine, the second stage was enlarged and a third stage added. Unlike GE with the CJ805-23, Pratt & Whitney had not undertaken any transonic fan research prior to designing the JT3D, so they were unable to incorporate a single stage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USAir Flight 1016
USAir Flight 1016 was a regularly scheduled domestic passenger flight in the southeastern United States, between Columbia, South Carolina, and Charlotte, North Carolina.Copy atEmbry–Riddle Aeronautical University. On July 2, 1994, the flight encountered heavy thunderstorms and microburst-induced windshear while attempting to land, and crashed into heavy trees and a private residence near the The crash and ensuing fire caused 37 fatalities and seriously injured Aircraft The aircraft involved was a McDonnell Douglas DC-9-31, MSN 47590, registered as N954VJ, which was manufactured by McDonnell Douglas in 1973. In its 21 years of service, the aircraft had logged approximately 53,917 airframe hours and 63,147 takeoff and landing cycles. It was equipped with two Pratt & Whitney JT8D-7B engines. Flight History of the flight On Saturday, July 2, 1994, the McDonnell Douglas DC-9, that was flying as USAir Flight 1016 departed Columbia Metropolitan Airport at 18:15 EDT for t ... [...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 flight from Fort Lauderdale, Florida, to Los Angeles, California, 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 just over short of the runway, struck a car near the airport, collided with two water tanks and disintegrated. Out of the 163 occupants on board, 136 people died and 25 others were injured in the accident. One person on the ground also died. 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. Forecasts of microbursts improved in the following years, with USAir Flight 1016 being the only subsequ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 flying this route crashed in the New Orleans suburb of Kenner after being forced down by a microburst shortly after takeoff. All 145 on board, as well as eight people on the ground, were killed. Copy atEmbry–Riddle Aeronautical University. Aircraft and crew The aircraft involved, a 14-year-old Boeing 727-235, registration N4737, construction number 19457/518, was delivered to National Airlines on January 31, 1968. The aircraft was powered by three Pratt & Whitney JT8D-7B turbofan engines, and was renamed from ''37 Susan/Erica'' to ''Clipper Defiance'' after National was merged with Pan Am. At the time of accident, the aircraft was carrying 137 passengers and one non-revenue passenger in the cockpit jumpseat, along with a crew of seven. The captain was 45-year-old Kenneth L. McCullers, who had 11,7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight 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 colloquially as a "black box", an outdated name which has become a misnomer—they are now required to be painted Safety orange, 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 Internation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VHF Omnidirectional Range
Very High Frequency Omnidirectional Range Station (VOR) is a type of short-range VHF radio navigation system for aircraft, enabling aircraft with a VOR receiver to determine the azimuth (also radial), referenced to magnetic north, between the aircraft to/from fixed VOR ground transmitter, radio beacons. VOR and the first DME(1950) system (referenced to 1950 since different from today's DME/N) to provide the slant range distance, were developed in the United States as part of a U.S. civil/military program for Aeronautical Navigation Aids in 1945. Deployment of VOR and DME(1950) began in 1949 by the U.S. CAA (Civil Aeronautics Administration). ICAO standardized VOR and DME(1950) in 1950 in ICAO Annex ed.1. Frequencies for the use of VOR are standardized in the very high frequency (VHF) band between 108.00 and 117.95 MHz Chapter 3, Table A. To improve azimuth accuracy of VOR even under difficult siting conditions, Doppler VOR (DVOR) was developed in the 1960s. VOR is accordi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instrument Flight Rules
In aviation, instrument flight rules (IFR) is one of two sets of regulations governing all aspects of civil aviation aircraft operations; the other is visual flight rules (VFR). The U.S. Federal Aviation Administration's (FAA) ''Instrument Flying Handbook'' defines IFR as: "Rules and regulations established by the FAA to govern flight under conditions in which flight by outside visual reference is not safe. IFR flight depends upon flying by reference to instruments in the flight deck, and navigation is accomplished by reference to electronic signals." It is also a term used by pilots and controllers to indicate the type of flight plan an aircraft is flying, such as an IFR or VFR flight plan. Basic information Comparison to visual flight rules It is possible and fairly straightforward, in relatively clear weather conditions, to fly an aircraft solely by reference to outside visual cues, such as the horizon to maintain orientation, nearby buildings and terrain features for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laryngitis
Laryngitis is inflammation of the larynx (voice box). Symptoms often include a hoarse voice and may include fever, cough, pain in the front of the neck, and trouble swallowing. Typically, these last under 2 weeks. Causes Laryngitis is categorized as acute if it lasts less than 3 weeks and chronic if symptoms last more than 3 weeks. Acute cases usually occur as part of a viral upper respiratory tract infection, other infections, and trauma such as from coughing or other causes. Chronic cases may occur due to smoking, tuberculosis, allergies, acid reflux, rheumatoid arthritis, or sarcoidosis. The underlying mechanism involves irritation of the vocal cords. Diagnosis Concerning signs that may require further investigation include stridor, history of radiation therapy to the neck, trouble swallowing, duration of more than 3 weeks, and a history of smoking. If concerning signs are present. the vocal cords should be examined via laryngoscopy. Other conditions that can pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Engineer
A flight engineer (FE), also sometimes called an air engineer, is a member of an aircraft's flight crew who is responsible for monitoring and operating its complex aircraft systems. In the early era of aviation, the position was sometimes referred to as the "air mechanic". Flight engineers can still be found on some larger Fixed-wing aircraft, fixed-wing airplanes and helicopters. A similar crew position exists on some spacecraft. In most modern aircraft, their complex systems are both monitored and adjusted by electronic microprocessors and computers, resulting in the elimination of the flight engineer's position. In earlier days, most larger aircraft were designed and built with a flight engineer's position. For U.S. civilian aircraft that require a flight engineer as part of the crew, the flight engineer must possess an FAA Flight Engineer Certificate with reciprocating, turboprop, or turbojet ratings appropriate to the aircraft. Whereas the four-engine Douglas DC-4 did not re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
