一架波音777飞机6日下午在美国旧金山坠毁
- 主题发起人 cy25915
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我猜想，那是航班终点，飞机上的油已经不多了。那是777，把油耗光是不可能的，圈子兜大了就麻烦了。
那个据说的拉头，也可能是试图拉起来兜圈子，但是拉晚了。
我那也是就起落架放不下那个猜想说说而已。
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Witnesses describe unusual landing
Everything looked normal at first. The plane was coming into the airport Saturday in a routine flight pattern. But then the wheels seemed too low too soon, said one man, who was identified by CNN affiliate KTVU only by his last name, Glickman.
When a plane lands, there is typically white smoke from the friction of the wheels. But there was a large plume of white smoke when Flight 214 touched down. Then people heard a pop and a fireball burst out from underneath the aircraft.
"It just pancaked immediately. It collapsed and then it slid," Glickman said. "It just kept sliding and sliding and sliding. I was surprised it didn't come apart. It was unreal."
Danielle Wells also saw the plane go down.
"Literally just witnessed a plane crash start to finish. I cannot stop crying I can't believe this," she said on Twitter.
Kristina Stapchuck saw the crash from a window seat on another plane. She saw Flight 214 rock back and forth and the tail come off. Other parts came off and shattered everywhere on the runway. It looked like the plane was sliding on its belly all the way down the runway.
"It all happened so suddenly," she said.
People who watched it happen feared the worst. They could see the inside of the plane in orange glow from the fire. Smoke was billowing from the plane. One passenger on the plane shot a photograph that showed flames and smoke bursting out of the plane's windows.
Those outside thought it was instant death for everyone aboard. Flames and smoke were bursting out of many of the aircraft's windows.
======================
Kristina Stapchuck saw the dramatic scene unfold from her seat on a plane on the airport tarmac. Soon after Flight 214 touched down, "it looked like the tires slipped a little bit and it rocked back," she told CNN.
Parts of the plane began to break off as it rocked and then began to spin.
==============================
Bill Waldock, an expert on aviation accident investigation, said he was reminded of the Heathrow accident as he watched video of Saturday’s crash. “Of course, there is no indication directly that’s what happened here,” he said. “That’s what the investigation is going to have to find out.”
The Asiana 777 “was right at the landing phase and for whatever reason the landing went wrong,” said Waldock, director of the Embry-Riddle University accident investigation laboratory in Prescott, Ariz. “For whatever reason, they appeared to go low on approach and then the airplane pitched up suddenly to an extreme attitude, which could have been the pilots trying to keep it out of the ground.”
Everything looked normal at first. The plane was coming into the airport Saturday in a routine flight pattern. But then the wheels seemed too low too soon, said one man, who was identified by CNN affiliate KTVU only by his last name, Glickman.
When a plane lands, there is typically white smoke from the friction of the wheels. But there was a large plume of white smoke when Flight 214 touched down. Then people heard a pop and a fireball burst out from underneath the aircraft.
"It just pancaked immediately. It collapsed and then it slid," Glickman said. "It just kept sliding and sliding and sliding. I was surprised it didn't come apart. It was unreal."
Danielle Wells also saw the plane go down.
"Literally just witnessed a plane crash start to finish. I cannot stop crying I can't believe this," she said on Twitter.
Kristina Stapchuck saw the crash from a window seat on another plane. She saw Flight 214 rock back and forth and the tail come off. Other parts came off and shattered everywhere on the runway. It looked like the plane was sliding on its belly all the way down the runway.
"It all happened so suddenly," she said.
People who watched it happen feared the worst. They could see the inside of the plane in orange glow from the fire. Smoke was billowing from the plane. One passenger on the plane shot a photograph that showed flames and smoke bursting out of the plane's windows.
Those outside thought it was instant death for everyone aboard. Flames and smoke were bursting out of many of the aircraft's windows.
======================
Kristina Stapchuck saw the dramatic scene unfold from her seat on a plane on the airport tarmac. Soon after Flight 214 touched down, "it looked like the tires slipped a little bit and it rocked back," she told CNN.
Parts of the plane began to break off as it rocked and then began to spin.
==============================
Bill Waldock, an expert on aviation accident investigation, said he was reminded of the Heathrow accident as he watched video of Saturday’s crash. “Of course, there is no indication directly that’s what happened here,” he said. “That’s what the investigation is going to have to find out.”
The Asiana 777 “was right at the landing phase and for whatever reason the landing went wrong,” said Waldock, director of the Embry-Riddle University accident investigation laboratory in Prescott, Ariz. “For whatever reason, they appeared to go low on approach and then the airplane pitched up suddenly to an extreme attitude, which could have been the pilots trying to keep it out of the ground.”
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不对你个头啊，如果不是早出问题，为什么要迫降？
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矮油，说得跟真的一样。
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照片看象是从顶部外面烧起来的。
Incidents and accidents of 777
As of 2013, the 777 has been in eight aviation occurrences,[190] including three hull-loss accidents,[191] and three hijackings.[192] Before 2013, the only fatality involving the twinjet occurred in a refueling fire at Denver International Airport on September 5, 2001, during which a ground worker sustained fatal burns.[193] The aircraft, operated by British Airways, suffered fire damage to the lower wing panels and engine housing; it was later repaired and put back into service.[193][194]
The type's first hull-loss occurred on January 17, 2008, when British Airways Flight 38, a 777-200ER with Rolls-Royce Trent 895 engines flying from Beijing to London, crash-landed approximately 1,000 feet (300 m) short of Heathrow Airport's runway 27L and slid onto the runway's threshold. There were 47 injuries and no fatalities. The impact damaged the landing gear, wing roots, and engines, and the aircraft was written off.[195][196] Upon investigation, the accident was blamed on ice crystals from the fuel system clogging the fuel-oil heat exchanger (FOHE).[189] In 2009, air accident investigators called for a redesign of this component on the Trent 800 series engine.[197] Redesigned fuel oil heat exchangers were installed in British Airways' 777s by October 2009.[198]
Two other minor momentary losses of thrust with Trent 895 engines occurred in February and November 2008.[199][200] The National Transportation Safety Board (NTSB) investigators concluded that, just as on BA38, the loss of power was caused by ice in the fuel clogging the fuel-oil heat exchanger. As a result, the heat exchanger was redesigned.[189]
The type's second hull-loss occurred on July 29, 2011, when an EgyptAir 777-200ER registered as SU-GBP suffered a cockpit fire while parked at the gate at Cairo International Airport.[201] The plane was successfully evacuated with no injuries,[201] and airport fire teams extinguished the fire.[202] The aircraft sustained structural, heat, and smoke damage, and was written off.[201][202] Investigators focused on a possible electrical fault with a supply hose in the cockpit crew oxygen system.[201]
The third hull loss of a Boeing 777 occurred on July 6, 2013, when Asiana Airlines Flight 214, 777-200ER registered HL7742,[203] crashed while landing at San Francisco International Airport after touching down short of the runway. Most of the passengers and crew evacuated before fire destroyed the aircraft, but 2 of the 307 on board were killed, marking the first fatalities in a crash involving a Boeing 777 jet.[204][205] An NTSB investigation is underway.[206]
再看又像从内部烧出来的：
纯粹个人观点：
（1）从目击者的描述来看，火有可能是从飞机底（腹）部先烧起来的，然后穿过机身内部（客舱）一直烧到顶部。
（2）而这火的起因很可能是轮胎进而是起落架的撞毁导致的飞机腹部与跑道的摩擦。
（3）轮胎以及起落架撞毁的原因有可能是飞行员在进行人工迫降的时候操作有误。
（4）而导致飞行员不得不进行手动操作降落的原因有可能是自动降落模式出现了问题或是采用自动模式时起落架无法放下。
就目前而言，一切都只能是猜测。真实的原因只能等待最终的调查结果来解释。
