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Fed officials: Asiana flight flew too slow before crash

  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT

    Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo) CHINA OUT

  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT

    Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo) CHINA OUT

  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 that crashed at San Francisco International Airport, at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT

    Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 that crashed at San Francisco International Airport, at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo) CHINA OUT

  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 that crashed at San Francisco International Airport, at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT

    Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 that crashed at San Francisco International Airport, at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo) CHINA OUT

  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT

    Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo) CHINA OUT

  • This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT

    This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT

  • A fire truck sprays water on Asiana Flight 214 after it crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)

    A fire truck sprays water on Asiana Flight 214 after it crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)

  • This photo provided by Antonette Edwards shows what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013. (AP Photo/Antonette Edwards )

    This photo provided by Antonette Edwards shows what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013. (AP Photo/Antonette Edwards )

  • This photo provided by Wei Yeh shows what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013.  (AP Photo/Wei Yeh)

    This photo provided by Wei Yeh shows what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013. (AP Photo/Wei Yeh)

  • Smokes rises from Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)

    Smokes rises from Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)

  • Smokes rises from Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)

    Smokes rises from Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)

  • In this photo provided by Scott Sobczak, smoke rises from of Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Scott Sobczak) MANDATORY CREDIT

    In this photo provided by Scott Sobczak, smoke rises from of Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Scott Sobczak) MANDATORY CREDIT

  • The wreckage of Asiana Flight 214 is seen after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Jeff Chiu)

    The wreckage of Asiana Flight 214 is seen after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Jeff Chiu)

  • The tail of Asiana Flight 214 is seen, right, after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Jeff Chiu)

    The tail of Asiana Flight 214 is seen, right, after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Jeff Chiu)

  • This photo provided by Krista Seiden shows smoke rising from what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013. (AP Photo/Krista Seiden)

    This photo provided by Krista Seiden shows smoke rising from what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013. (AP Photo/Krista Seiden)

  • Fire crews work the crash site of Asiana Flight 214 at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)

    Fire crews work the crash site of Asiana Flight 214 at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)

  • This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT

    This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT

  • Fire crews respond to the scene where Asiana Flight 214 crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)

    Fire crews respond to the scene where Asiana Flight 214 crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)

  • Fire crews respond to the scene where Asiana Flight 214 crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)

    Fire crews respond to the scene where Asiana Flight 214 crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)

  • This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT

    This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT

  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT
  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT
  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 that crashed at San Francisco International Airport, at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT
  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 that crashed at San Francisco International Airport, at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT
  • Parents of Wang Linjia, center, are comforted by parents of some other students who were on the Asiana Airlines Flight 214 when it crashed at San Francisco International Airport, while they gather and wait for news of their children at Jiangshan Middle School in Jiangshan city, in eastern China's Zhejiang province, Sunday July 7, 2013. Chinese state media have identified the two people who died in the plane crash at San Francisco International Airport on Saturday as Ye Mengyuan and Wang Linjia, 16-year-old students at Jiangshan Middle School in China's eastern Zhejiang province. (AP Photo)  CHINA OUT
  • This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT
  • A fire truck sprays water on Asiana Flight 214 after it crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)
  • This photo provided by Antonette Edwards shows what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013. (AP Photo/Antonette Edwards )
  • This photo provided by Wei Yeh shows what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013.  (AP Photo/Wei Yeh)
  • Smokes rises from Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)
  • Smokes rises from Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)
  • In this photo provided by Scott Sobczak, smoke rises from of Asiana Flight 214 after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Scott Sobczak) MANDATORY CREDIT
  • The wreckage of Asiana Flight 214 is seen after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Jeff Chiu)
  • The tail of Asiana Flight 214 is seen, right, after it crashed at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Jeff Chiu)
  • This photo provided by Krista Seiden shows smoke rising from what a federal aviation official says was an Asiana Airlines flight crashing while landing at San Francisco airport on Saturday, July 6, 2013. (AP Photo/Krista Seiden)
  • Fire crews work the crash site of Asiana Flight 214 at San Francisco International Airport in San Francisco, Saturday, July 6, 2013. (AP Photo/Bay Area News Group, John Green)
  • This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT
  • Fire crews respond to the scene where Asiana Flight 214 crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)
  • Fire crews respond to the scene where Asiana Flight 214 crashed at San Francisco International Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/Noah Berger)
  • This frame grab from video provided by KTVU shows the scene after an Asiana Airlines flight crashed while landing at San Francisco Airport on Saturday, July 6, 2013, in San Francisco. (AP Photo/KTVU) MANDATORY CREDIT

While federal investigators began piecing together what led to the crash, San Mateo County Coroner Robert Foucrault disclosed that he was looking into the possibility that one of the two teenage passengers who died Saturday actually survived the crash but was run over by a rescue vehicle rushing to aid victims as the plane burst into flames. Remarkably, 305 of 307 passengers survived the crash and more than a third didn’t even require hospitalization. Only a small number were critically injured.

Accident investigators are trying to determine whether pilot error, mechanical problems or something else was to blame for the crash. At a news conference, NTSB chief Deborah Hersman disclosed the Boeing 777 was traveling at speeds well below the target landing speed of 137 knots per hour, or 157 mph.

“We’re not talking about a few knots,” she said.

Hersman described the frantic final seconds of the flight as the pilots struggled to avoid crashing.

Seven seconds before the crash, pilots recognized the need to increase speed, she said, basing her comments on an evaluation of the cockpit voice and flight data recorders that contain hundreds of different types of information on what happened to the plane. Three seconds later, the aircraft’s stick shaker — a piece of safety equipment that warns pilots of an impending stall — went off. The normal response to a stall warning is to boost speed and Hersman said the throttles were fired and the engines appeared to respond normally.

At 1.5 seconds before impact, there was a call from the crew to abort the landing.

The details confirmed what survivors and other witnesses said they saw: an aircraft that seemed to be flying too slowly just before its tail apparently clipped a seawall at the end of the runway and the nose slammed down.

Pilots normally try to land at the target speed, in this case 137 knots, plus an additional five more knots, said Bob Coffman, an American Airlines captain who has flown 777s. He said the briefing raises an important question: “Why was the plane going so slow?”

The plane’s Pratt & Whitney engines were on idle and the pilots were flying under visual flight rules, Hersman said. Under visual flight procedures in the Boeing 777, a wide-body jet, the autopilot would typically have been turned off while the automatic throttle, which regulates speed, would been on until the plane had descended to 500 feet in altitude, Coffman said. At that point, pilots would normally check their airspeed before switching off the autothrottle to continue a “hand fly” approach, he said.

There was no indication in the discussions between the pilots and the air traffic controllers that there were problems with the aircraft.

The airline said Monday in Seoul that the pilot at the controls had little experience flying that type of plane and was landing one for the first time at that airport.

Asiana spokeswoman Lee Hyomin said that Lee Gang-guk was trying to get used to the 777 during Saturday’s crash landing. She says the pilot had nearly 10,000 hours flying other planes but had only 43 hours on the 777.

Among the questions investigators are trying to answer was what, if any, role the deactivation of a ground-based landing guidance system due to airport construction played in the crash. Such systems help pilots land, especially at airports like San Francisco where fog can make landing challenging. The conditions Saturday were nearly perfect, with sunny skies and light winds.

The flight originated in Shanghai, China, stopped over in Seoul, South Korea, before making the nearly 11-hour trip to San Francisco. The South Korea-based airline said four South Korean pilots were on board, three of whom were described as “skilled.”

Among the travelers were citizens of China, South Korean, the United States, Canada, India, Japan, Vietnam and France. There were at least 70 Chinese students and teachers heading to summer camps, according to Chinese authorities.

Fei Xiong, a Chinese passenger , was traveling to California so she could take her 8-year-old son to Disneyland. The pair was sitting in the back half of the plane. Xiong said her son sensed something was wrong.

“My son told me: ‘The plane will fall down, it’s too close to the sea,’” she said. “I told him: ‘Baby, it’s OK, we’ll be fine.’”

When the plane hit the ground, oxygen masks dropped down, said Xu Da, a product manager at an Internet company in Hangzhou, China, who was sitting with his wife and teenage son near the back of the plane. When he stood up, he said he could see sparking — perhaps from exposed electrical wires.

He turned and could see the tail where the galley was torn away, leaving a gaping hole through which they could see the runway. Once on the tarmac, they watched the plane catch fire, and firefighters hose it down.

“I just feel lucky,” said Xu, whose family suffered some cuts and have neck and back pain.

In the chaotic moments after the landing, when baggage was tumbling from the overhead bins onto passengers and people all around her were screaming, Wen Zhang grabbed her 4-year-old son, who hit the seat in front of him and broke his leg.

Spotting a hole at the back of the jumbo jet where the bathroom had been, she carried her boy to safety.

“I had no time to be scared,” she said.

Authorities immediately closed the airport and rescuers rushed to the scene. A United Airlines pilot radioed the control tower, saying: “We see people ... that need immediate attention. They are alive and walking around.”

“Think you said people are just walking outside the airplane right now?” the controller replied.

“Yes,” answered the pilot of United Flight 885. “Some people, it looks like, are struggling.”

At the crash scene, police officers knives up to crew members inside the burning wreckage so they could cut away passengers’ seat belts. Passengers jumped down emergency slides, escaping from billowing smoke that rose high above the bay. Some passengers who escaped doused themselves with water from the bay, presumably to cool burns, authorities said.

By the time the flames were out, much of the top of the fuselage had burned away. The tail section was gone, with pieces of it scattered across the beginning of the runway.

Foucrault, the coroner, said senior San Francisco Fire Department officials notified him and his staff at the crash site on Saturday that one of the 16-year-olds who was kilkled may have been struck on the runaway. Foucrault said an autopsy he expects to be completed by Monday will involve determining whether the girl’s death was caused by injuries suffered in the crash or “a secondary incident.”

He said he did not get a close enough look at the victims on Saturday to know whether they had external injuries.

Foucrault said one of the bodies was found on the tarmac near where the plane’s tail broke off when it slammed into the runway. The other was found on the left side of the plane about 30 feet away from where the jetliner came to rest after it skidded down the runway.

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