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(USA Today) -- As officials try to piece together what led to the Asiana Airlines Flight 214 crash, investigators from the National Transportation Safety Board will analyze air-traffic control records, weather, aircraft maintenance and the crew's actions from data recorders aboard the plane.

A team of federal safety investigators headed for San Francisco on Saturday, where they will focus on flight operations, human performance, survival factors and the aircraft, including its power plants. The investigator in charge will be Bill English.



"Everything is on the table at this point," said Deborah Hersman, chairman of the NTSB and the member who is traveling to the accident site.



Hersman said it is too early to say whether the crash resulted from pilot error.



"We have to gather the facts before we reach any conclusions," she said.



Kevin Hiatt, CEO of the Flight Safety Foundation, said based on past crashes investigators will likely provide daily briefings for a week with factual accounts of what is found and where they efforts are being focused.



Any conclusions about what caused the crash are likely months or years away, Hiatt said.



Boeing's 777 has been a relatively reliable aircraft, according to safety experts.

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