Vol Alaska Airlines 261. Subsequent DNA testing proved these claims to be false. Another reported, "Yes sir, ah, I concur. Das Flugzeug war eine im Jahre 1992 gebaute MD-83, die bis zum Absturz mehr als 26.200 Flugstunden hinter sich hatte. [16]:6–9 During this time, the flight crew considered, and rejected, any further attempts to correct the runaway trim. Fatalities:5 of 5 crew, 83 of 83 passengers, Airports: (Departure) Puerto Vallarta-Gustavo D. Ordaz Airport (PVR/MMPR), Mexico; (Destination) San Francisco International Airport, CA (SFO/KSFO), United States of America. See, Licenciado Gustavo Díaz Ordaz International Airport, Naval Construction Battalion Center Port Hueneme, "Aircraft Accident Report, Loss of Control and Impact with Pacific Ocean Alaska Airlines Flight 261 McDonnell Douglas MD-83, N963AS About 2.7 Miles [4.3 km] North of Anacapa Island, California, January 31, 2000", Alaska Airlines Flight 261: Searchers Hold Out Hope for Possible Survivors; Crash Takes Heavy Toll on Airlines Employees' Families, "Alaska Airlines jet crashes into Pacific", "Passengers and Crew Members on Alaska Airlines Flight 261", "(Essay 2958) Alaska Flight 261 bound for Seattle crashes into the Pacific Ocean on January 31, 2000", "Remembering Morris Thompson 20 years later", "Flight 261 Special Report: Alaska Airlines Names Aviation Experts To Conduct Safety Audit", "The anger and the grief linger one year later", "Fate Leads An Airline To Grieve For Itself", "THE CRASH OF FLIGHT 261: For Airline, Loss Feels Like Deaths in Family", "Names of those aboard Alaska Airlines Flight 261", "Transcript of Proceedings: Abstract of Aviation Accident Report: Alaska Airlines Flight 261, MD‑83, N963AS, Pacific Ocean about 2.7 Miles [4.3 km ] North of Anacapa Island, California, January 31, 2000, NTSB/AAR‑02/01", "Alaska Airlines Flight 261 – 31 JAN 2000 – Relevant parts of ATC transcript", "Tape replays plane's last chilling minutes", "NASA says it has a better jackscrew; others aren't convinced", "Systems Thinking 1.0 and Systems Thinking 2.0: Complexity science and a new conception of "cause, Alaska Airlines maintenance records raise new questions, No criminal charges against Alaska; airline settles with whistle-blower, "Alaska Airlines copes with 'saddest, most tragic day, "Port Hueneme, CA – Official Website – Alaska Air Flight 261 Memorial Sundial", "Memorials quieter today, but Flight 261 grief still hurts", "20 years after Alaska Airlines Flight 261 crash, loved ones still gather to grieve", "Pilots honored for heroism during crisis", "Ted Thompson/Bill Tansky Scholarship Fund", "All but one suit settled in Flight 261 crash", "Father settles lawsuit in Alaska Air crash to avert playing of tape", "Seattle still struggling to make sense of the Flight 261 tragedy", "Quest for truth proves lawyer's integrity", "Nigerian Advance Fee Scam Customized for Alaska: Morris Thompson variation could be taste of ploys to come", "Latest e-mail uses Alaska Airlines crash victims to scam", "AS203 (ASA203) Alaska Airlines Flight Tracking and History", "AS373 (ASA373) Alaska Airlines Flight Tracking and History", "Alaska Airlines Completes Transition To All-Boeing Fleet", Cockpit voice recorder transcript and accident summary, Navy expands search for debris at Alaska Airlines Flight 261 crash scene, Applying Lessons Learned from Accidents, Alaska Airlines Flight 261, Federal Aviation Administration – Lessons Learned Home: Alaska Airlines Flight 261, https://en.wikipedia.org/w/index.php?title=Alaska_Airlines_Flight_261&oldid=1009081250, Airliner accidents and incidents caused by maintenance errors, Aviation accidents and incidents in the United States in 2000, Accidents and incidents involving the McDonnell Douglas MD-83, Airliner accidents and incidents in California, Aviation accidents and incidents caused by loss of control, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, Cynthia Oti, an investment broker and financial talk show host at San Francisco's. [1][21], Later analysis estimated that 90% of the thread in the acme nut had already worn away previously, and that it had finally stripped out during the flight while en route to San Francisco. McDonnell Douglas MD-83 należący do Alaska Airlines, lecący z Puerto Vallarta do Seattle z międzylądowaniem w San Francisco, rozbił się nieopodal wyspy Anacapa, w wyniku awarii stabilizatorów.Śmierć poniosło 88 osób (83 pasażerów + 5 członków załogi) Il volo Alaska Airlines 261 era un volo dell'Alaska Airlines dall'Aeroporto Internazionale Lic. Crash … Le vol 261 était un vol de la compagnie Alaska Airlines qui assurait la liaison entre la station balnéaire mexicaine de Puerto Vallarta, sur la côte pacifique et Seattle au nord-ouest des États-Unis. The resulting upward movement of the horizontal stabilizer leading edge created an excessive upward aerodynamic tail load, which caused an uncontrollable downward pitching of the airplane from which recovery was not possible. Alaska Airlines' maintenance and inspection of its horizontal stabilizer activation system was poorly conceived and woefully executed. [1], Beginning at 16:19 (00:19 UTC), the CVR recorded the sounds of at least four distinct "thumps," followed 17 seconds later by an "extremely loud noise," as the overstrained jackscrew assembly failed completely and the jackscrew separated from the acme nut holding it in place. This is the only time the award has ever been given posthumously. [40][41], As of December 2020, Flight 261 no longer exists, and Alaska Airlines no longer operates the Puerto Vallarta–San Francisco–Seattle/Tacoma route. The absence on the McDonnell Douglas MD-80 of a fail-safe mechanism to prevent the catastrophic effects of total acme nut loss. Liotine began working with federal investigators by secretly audio recording his supervisors. The horizontal stabilizer is mounted on top of the 18-foot-high vertical stabilizer; they are connected by two hinges at the aft spar of the horizontal stabilizer and with a single jackscrew assembly at the front spar of the stabilizer in a T-tail configuration (see figure 3). Further, the airplane had descended to 16,420 feet, and the indicated airspeed had decreased to 208 knots. All wreckage recovered from the crash site was unloaded at the Seabees' Naval Construction Battalion Center Port Hueneme, California, for examination and documentation by NTSB investigators. [24], In 1998, an Alaska Airlines mechanic named John Liotine, who worked in the Alaska Airlines maintenance center in Oakland, California, told the FAA that supervisors were approving records of maintenance that they were not allowed to approve or that indicated work had been completed when, in fact, it had not. L’histoire du vol d’Alaska Airlines 261 est celle d’une vraie bataille aérienne contre le destin. Alaska Airlines (code IATA : AS ; code OACI : ASA) est une compagnie aérienne américaine.Elle assure des vols intérieurs et internationaux en Amérique du Nord depuis ses hubs à l'aéroport international de Seattle-Tacoma, l'aéroport international d'Anchorage Ted-Stevens, l'aéroport international de Portland et l'aéroport international de Los Angeles. His recommendation was overruled by the next shift. Alaska-Airlines-Flug 261 war ein Flug mit einer McDonnell Douglas MD-83 von Puerto Vallarta mit Zwischenstopp in San Francisco nach Seattle am 31. Kiteyu. The cause of the final dive was the low-cycle fatigue fracture of the torque tube, followed by the failure of the vertical stabilizer tip fairing brackets, which allowed the horizontal stabilizer leading edge to move upward significantly beyond what is permitted by a normally operating jackscrew assembly. Alaska Airlines Flight 261 An Alaska Airlines pilot, involved in the investigation of the horrific crash of Alaska Flight 261, has listened to the cockpit … On December 22, 1998, federal authorities raided an Alaska Airlines property and seized maintenance records. The airplane impacted the Pacific Ocean near Port Hueneme, California. The airplane had accumulated 17,699 flight hours. The upper mechanical stop was found attached to the splines of the acme screw, and the clamp bolt for this stop was in place. As a result, the vertical stabilizer failed, and the aircraft rapidly pitched over into a dive. [22] Ultimately, the lack of lubrication of the acme-nut thread and the resultant excessive wear were determined to be the direct causes of the accident. The FDR recorded a significant decrease in vertical acceleration values (negative Gs),26 a nose-down pitch angle, and a significant decrease in lateral acceleration values. Das Flugzeug stürzte vor Los Angeles ins Meer, wobei alle 88 Personen an Bord getötet wurden. [1] Insufficient lubrication of the components was also considered as a reason for the wear. Later, the National Transportation Safety Board (NTSB) found that while "the flight crew's decision to divert the flight to Los Angeles [...] was prudent and appropriate", "Alaska Airlines dispatch personnel appear to have attempted to influence the flight crew to continue to San Francisco [...] instead of diverting to Los Angeles". They wished to avoid the mistakes made by Trans World Airlines in the aftermath of the TWA Flight 800 accident; in other words, to provide timely information and compassion to the families of the victims. The crew of a SkyWest airliner reported, "He's, uh, definitely out of control. New Terrible Road Rage, Car Crashes and accidents Compilation May 2016 12.05.2016 #261. Both the horizontal stabilizer trim system jackscrew (also referred to as "acme screw") and the corresponding acme nut, which the jackscrew turns through, were found. FDR information from the accident flight indicated that during taxi for takeoff, when the FDR started recording, the horizontal stabilizer was at the 7° airplane-nose-up position, which was the takeoff pitch trim setting. [1] Nach dem Start in Puerto Vallarta um 13:37 Uhr PST stieg das Flugzeug auf seine Reiseflughöhe und nahm Kurs Richtung San Fra… ", The aircraft involved in the accident was a McDonnell-Douglas MD-83, serial number 53077, and registered as N963AS. The names of Morris Thompson and Ronald and Joyce Lake were used in schemes unrelated to them. He's, ah, down. [29][30], Captain Thompson and First Officer Tansky were both awarded the Air Line Pilots Association Gold Medal for Heroism, in recognition of their actions during the emergency. Testing revealed that the non-standard tools ("restraining fixtures") used by Alaska Airlines could result in inaccurate measurements, and that it was possible that if accurate measurements had been obtained at the time of the last inspection, these measurements would have indicated the excessive wear and the need to replace the affected components. The National Transportation Safety Board determines that the probable cause of this accident was a loss of airplane pitch control resulting from the in-flight failure of the horizontal stabilizer trim system jackscrew assembly's acme nut threads. Choisissez parmi des contenus premium Alaska Airlines 261 de la plus haute qualité. FDR data indicated that at 1619:36.6, the flaps were extending and the slats were moving to the mid position. A few seconds before 16:22 (00:22 UTC), Flight 261 impacted the Pacific Ocean at high speed, about 14 miles (23 kilometers; 12 nautical miles) offshore, between the coastal city of Port Hueneme, California, and Anacapa Island. [23], The investigation then proceeded to examine why scheduled maintenance had failed to adequately lubricate the jackscrew assembly. Ultimately the pilots chose to divert. 24 relations. The investigation concluded that "FAA surveillance of Alaska Airlines had been deficient for at least several years". [1]:9 At one point, unable to raise the nose, they attempted to fly the plane upside-down in an effort to maintain control. Those who lost loved ones when Alaska Airlines Flight 261 plunged into the Pacific Ocean off California have learned some hard, bitter truths in the 10 years since the crash. [26] In December 2001, federal prosecutors stated that they were not going to file criminal charges against Alaska Airlines. Bouquets of flowers started arriving at the company's headquarters in SeaTac, Washington, the day after the crash. At this time, pilots from aircraft flying in the vicinity reported in, with one SkyWest Airlines pilot saying, "...and he's just hit the water." [1], End-play checks were conducted during a periodic comprehensive airframe overhaul process called a C‑check. 10:35. [1] The accident showed that certain wear mechanisms could affect both sets of threads, and that the wear might not be detected.
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