ja:ユナイテッド航空811便貨物ドア脱落事故 [citation needed], In 1989, the flight crew received the Secretary's Award for Heroism for their actions. The same event could happen if frayed wires were able to power the cam-motor, even if the circuit power was cut by the safety switch. Template:Clear, The damage on United Airlines Flight 811 seen from the cabin, The NTSB issued a recommendation for all 747-100s in service at the time to replace their cargo door latching mechanisms with new, non-faulty locks. Wikipedia. Thomas came back to the cockpit, visibly pale, and reported that large section of fuselage aft of the Number 1 exit door was open. United Airlines Flight 811 was a regularly scheduled airline flight from Los Angeles to Sydney, with intermediate stops at Honolulu and Auckland. An inspection of the door's electrical wiring discovered insulation breaches, and isolating certain electrical wires allowed the door to operate normally again. It swung out with such force that it passed its normal stop and slammed into the side of the fuselage, bursting it open. February 24, 2017 — This year, United Airlines will retire the 747 fleet, which closes out a monumental period of aviation history, including the harrowing events of flight 811 on February 24, 1989. [1]:66–68 The lock sectors, latch cams, and latch pins on the door were inspected, and did not show any signs of damage of the type predicted by the NTSB's original hypothesis. During the descent Captain Cronin had ordered Flight Engineer Randal Thomas to tell the flight attendants to prepare for an emergency landing, but he was unable to contact the flight attendants. The aircraft involved was a Boeing 747-122 (c/n 19875/89, reg N4713U), delivered to United Airlines on October 20, 1970. The 747's cargo door utilized a series of electrically-operated latch cams with which the latch pin locks in, the cam then rotating into the closed position. [1]:101 At the time of the accident, Cronin had logged around 28,000 flight hours, including approximately 1,600 to 1,700 hours in Boeing 747 aircraft. [8], The NTSB issued a recommendation for all 747-100s in service at the time to replace their cargo door latching mechanisms with new, redesigned locks. [7] [7] First Officer Gregory Slader died September 26, 2016, aged 75. Location of N1 and N2 in a turbofan engine, and a diagram of EPR, EGT, N1 and N2 indicators. [1]:101–102, Flight 811 took off from Honolulu International Airport at 01:52 local time, with 337 passengers and 18 crew members on board. No similar accidents leading to loss of life have officially occurred on this aircraft type. Book cheap flights to Bangkok (BKK) with United Airlines. At 02:10, an emergency was declared, and the crew began dumping fuel to get the plane's weight down to an acceptable landing weight. The locking sectors were made out of aluminum, and of too thin a gauge to be able to keep the latch cams from moving into the unlocked position against the power of the door motors. United Flight 811, which originated in San Francisco and made a stop in Los Angeles, took off from Honolulu at 1:34 a.m. (6:34 EST) for a flight to Auckland, New Zealand. Around this time (02:08) the plane had been flying for approximately 16 minutes and was passing between 22,000 and 23,000 feet (6,700–7,000 m). Cronin agreed. Boeing initially attributed this to mishandling by ground crew. If an electrical switch designed to cut electrical power to the cargo door when the outer handle was closed was faulty; the motors could still draw power. After the safe landing, the aircraft's cargo door was found to be ajar by about Template:Convert along its ventral edge. [3] Evacuation was carried out and all passengers and flight attendants were off in less than 45 seconds, though every flight attendant suffered some injury during the evacuation, ranging from scratches to a dislocated shoulder. You may recall that the aircraft was safely recovered to HNL through the skill of Captain… [1]:3 This necessitated a higher than normal landing speed of around 190–200 knots (350–370 km/h; 220–230 mph). Around this time (02:08) the plane had been flying for approximately 1… Take your favorite fandoms with you and never miss a beat. [3], Lee Campbell, a native New Zealander returning home, was one of the casualties on Flight 811. Thomas asked the captain if he could go down and find out what was happening. Air Dabia ceased operations in 1998, and the aircraft was abandoned at Plattsburgh International Airport, where it was scrapped in 2004. In 1997, the aircraft was taken out of service and passed onto Air Dabia as C5-FBS. Disasterpedia Wiki is a FANDOM Movies Community. The debris ejected from the plane during the explosive decompression caused severe damage to the number 3 and 4 engines, causing visible fires in both. [10]:22, The NTSB looked to circumstantial evidence, including prior incidents that involved cargo doors. When the aircraft reached 23,000 feet the huge door burst open and ripped off in the slipstream, tearing away cabin structure. [1]:8[8] All eight passengers seated in these locations were killed, as was the passenger in seat 9F. Back in May, I published ‘Death of an Airliner’ – the, oh, let’s call it ‘surprising’ post-accident life of Boeing 747-122 msn #19875/89 which, as United Airlines Flight UAL 811, suffered an explosive decompression out of Honolulu in February 1989. [1], The accident was most likely caused by improper wiring and deficiencies in the door's design. Deficiencies in the design of wide-body aircraft cargo doors were already known since the early 1970s from flaws in the DC-10 cargo door. [8] 14 minutes had elapsed since the emergency was declared. [1]:1–2, During the climb, the crew made preparations to detour around thunderstorms along the plane's track; the captain anticipated turbulence and kept the passenger seatbelt sign lit. How about Flight 811? In 1997, the aircraft was registered with Air Dabia as C5-FBS,[13] but abandoned in 2001 during overhaul maintenance at Plattsburgh International Airport. [1] Its flight crew consisted of Captain David Cronin, First Officer Al Slater and Flight Engineer Randal Thomas. [1]:2 Some of the explosively ejected debris damaged the right wing's leading edge, dented the horizontal stabilizer on that side, and damaged the vertical stabilizer. [1]:101 Flight 811 was Cronin's penultimate scheduled flight before his mandatory retirement. The aircraft returned to Honolulu, where it landed without further loss of life. It appeared in this case that a short circuit caused an uncommanded rotation of the latch cams, which forced the weak locking sectors to distort and allow the rotation, thus enabling the pressure differential and aerodynamic forces to blow the door off the fuselage; ripping away the hinge fixing structure, the cabin floor, and the side fuselage skin; and causing the explosive decompression. In 1989, the flight crew received the Secretary's Award for Heroism for their actions. pl:Katastrofa lotu United Airlines 811 Los Angeles Times: They Waited for Death, Then Deliverance! During the climb, the crew made preparations to detour around thunderstorms along the aircraft's track; anticipating turbulence, the captain kept the seat-belt sign lit. [8], On September 26 and October 1, 1990, two halves of Flight 811's cargo door were recovered from the Pacific Ocean from 14,100 feet (4,300 m) below the ocean surface. As early as 1975, Boeing realized the aluminum locking sectors were of too thin a gauge to be effective and recommended the airlines add doublers to the locking sectors. Senior flight attendant Laura Brentlinger hung on to the steps leading to the upper deck, and was dangling from them when the decompression occurred. Operating Flight 811 from Honolulu International Airport to Auckland was a 19 year old Boeing 747-122 (N4713U), the 89th Jumbo Jet off the production line. [1]:2 The aircraft had been flying for 17 minutes,[1]:25 as it was passing from 22,000 to 23,000 feet (6,700 to 7,000 m), when the flight crew heard a loud "thump" which shook it. Share. Recovery crews reported that no other debris or evidence of human remains had been discovered. On United Airlines flight 811, the cargo door suddenly opens in-flight and tears a portion of the fuselage. 53:59. There are no reasonable means by which the door locking and latching mechanisms could open mechanically in flight from a properly closed and locked position. Its flight crew consisted of Captain David Cronin, First Officer Al Slater and Flight Engineer Randal Thomas.During the climb, the crew made preparations to detour around thunderstorms along the aircraft's track; anticipating turbulence, the captain kept the se… [3] United Airlines Flight 811 berkshireeagle.com - Paul Sakuma. [3] At the time of the accident, the Boeing had accumulated 58,814 total flight hours, 15,028 flight 'pressurization' cycles,[4] and had not been involved in any previous accident. In 1997, the aircraft was registered with Air Dabia as C5-FBS[20] and, after that airline's collapse, abandoned in 2001 during overhaul maintenance at Plattsburgh International Airport. Either, the latching mechanisms were forced open electrically through the lock sectors after the door was secured, or the door was not properly latched and locked before departure. [10]:52 Thus, the NTSB attributed the accident to human error by the ground crew. Kiteyu. The Campbells' investigation led them to conclude that the design of the aircraft's cargo door latching mechanism was flawed. [1]:2 About a second and a half later, the forward cargo door blew off. [1]:2 The explosion damaged components of the on-board emergency oxygen supply system, as it was primarily located in the forward cargo sidewall area, just aft of the cargo door. We Honor United Flight 811 Crew. The NTSB learned that in N4713U's case, the aircraft had experienced intermittent malfunctions of its forward cargo door in the months prior to the accident. hu:A United Airlines 811-es járatának katasztrófája Please support this channel by following me on Patreonhttps://www.patreon.com/allecibayUnited Airlines Flight 811 was a regularly scheduled airline flight …  . [failed verification] Based on this hypothesis of in-service damage, the NTSB also faulted the airline for improper maintenance and inspection due to its failure to identify the damaged locking mechanism. United Airlines Flight 811 was a regularly scheduled airline flight from Los Angeles to Sydney, with intermediate stops at Honolulu and Auckland. The flaps were only partially deployed, as a result of damage sustained following the decompression. Flight 811 took off from Honolulu International Airport bound for Auckland, New Zealand with 3 flight crew, 15 flight attendants, and 337 passengers at approximately 01:52 HST. United Airlines Flight 811 experienced a cargo door failure in flight on Friday, February 24, 1989, after its stopover at Honolulu International Airport, Hawaii. [8], As the airliner neared the airport, the landing gear was extended. Some of the airlines reported the door motors did indeed begin running, attempting to force the door open against the locking sectors and causing damage to the mechanism. Deficiencies in the design of wide-body aircraft cargo doors were known since the early 1970s from flaws in the DC-10 cargo door. After his death his parents, Kevin and Susan Campbell, investigated the cause of the decompression independently of the National Transportation Safety Board. [14][15] These problems were not fully addressed by the aircraft industry or the NTSB, despite the warnings and deaths from the DC-10 accidents[16] and attempts by Boeing to solve the problems in the 1970s. Every flight attendant suffered some injury during the evacuation, ranging from scratches to a dislocated shoulder. NTSB reports found human remains in the fan blades of Number 3 engine, bringing a cold comfort that some of the victims died almost instantly as they were pulled out of the plane. United Airlines ist eine US-amerikanische Linienfluggesellschaft mit Sitz in Chicago, deren Unternehmensgeschichte in das Jahr 1926 zurückreicht.. Neben der eigenen Passagiersparte ist United Airlines Muttergesellschaft von United Express, der Frachtabteilung United Cargo sowie der United Technical Operations für Flugzeugwartung und zudem Gründungsmitglied der Star Alliance. [10] As the plane neared the airport, the landing gear was extended. [18] At the time, United Airlines' maintenance staff were investigating the cause of a circuit breaker trip. id:United Airlines Penerbangan 811 On February 24, 1989, the Boeing 747-122 serving the flight experienced a cargo door failure in flight shortly after leaving Honolulu. The decompression had damaged components of the on-board emergency oxygen supply system, which is primarily located in the forward cargo sidewall area, just aft of the cargo door.[3]. This incident led to latch damage similar to that observed on the cargo door of Flight 811. Lee Campbell, a New Zealander returning home, was one of the casualties on Flight 811. The resulting explosive decompression blew out several rows of seats, resulting in the deaths of nine passengers. The crew attempts landing back in Honolulu. [19] The aircraft was repaired, re-registered as N4724U in 1989, and returned to service with United Airlines in 1990. A gaping hole ripped open in the fuselage of … [failed verification], The 747's cargo door used a series of electrically operated latch cams into which the door-edge latch pins closed. es:Vuelo 811 de United Airlines However, an extensive air and surface search of the ocean had initially failed to locate the aircraft's cargo door. Two U.S. Coast Guard crewmen unload an interior piece from United Airlines Flight 811 in Honolulu, … The pressure differential caved in the floor above the door, causing two rows of seats (8G-12G and 8H-12H) and an individual in 9F to be ejected from the cabin, resulting in nine fatalities and leaving a gaping hole in the aircraft. Es isch zum ne explosive Druckabfall cho. A series of L-shaped arms (called locking sectors) were actuated by the final manual moving of a lever to close the door; these were designed to reinforce the unpowered latch cams and prevent them from rotating into an unlocked position. On February 24, 1989, the Boeing 747–122 serving the flight experienced a cargo door failure in flight shortly after leaving Honolulu. Passengers and crew members saw her clinging to a seat leg and were able to pull her back inside the cabin, although she was severely injured. Electrical switches cut electrical power to the cargo door when the outer handle was closed; however, if one of those were faulty, the motors could still draw power and rotate the latch cam to the open position. Unlike a plug door which opens inwards and essentially jams against its frame as the pressure outside drops, the Boeing 747 was designed with an outward-hinging door which, while increasing capacity, required a locking mechanism to keep the door closed. United Airlines Flight 811 berkshireeagle.com - Paul Sakuma. Februar 1989 het d Frachttüre vom United-Airlines-Flug 811 wäret em Flug la gah. Flight 811 took off from Honolulu International Airport bound for Auckland, New Zealand with 3 flight crew, 15 flight attendants, and 337 passengers at approximately 01:52 HST. It returned to Honolulu, where it landed without further loss of life. [1]:1–2 In this report, the NTSB determined that the probable cause of the accident was the sudden opening of the cargo door, which was attributed to improper wiring and deficiencies in the door's design. He concluded that it was probably a bomb, and considering the condition of the plane, it would be unwise to exceed Template:Convert. United Airlines Flight 811 experienced a cargo door failure in flight on Friday, February 24, 1989, after its last stopover at Honolulu International Airport, Hawaii. United Airlines Flug 811 war ein regulärer Linienflug von Los Angeles nach Sydney mit Zwischenstopps in Honolulu und Auckland .Am 24. To test this concern, Boeing instructed 747 operators to shut and lock the cargo door with the external handle, and then activate the door-open switch with the handle still in the locked position. Enjoy all the in-flight perks on your Bangkok flight, including speed Wi-Fi. The aircraft was successfully repaired, re-registered as N4724U in 1989, and returned to service with United Airlines in 1990. If the lock sectors were in proper condition, and were properly situated over the closed latch cams, the lock sectors had sufficient strength to prevent the cams from vibrating to the open position during ground operation and flight. Die daraus resultierende explosive Dekompression blies mehrere Sitzreihen aus und forderte den Tod von neun Passagieren. [3] 5 yıl önce | 8.9K görüntülenme. [6] [1]:2 At 02:20, an emergency was declared and the crew began dumping fuel to reduce the aircraft landing weight. 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