NTSB investigates Boeing 777 crash: Here's what we know so far

NTSB investigates Boeing 777 crash: Here's what we know so far
People watch a news program reporting about Asiana Airlines flight 214 which took off from Seoul and crashed while landing at San Francisco International Airport, at Seoul Railway Station in Seoul, South Korea, Sunday, July 7, 2013. The writing on the screen reads " Fire on the ceiling of the airplane." (AP Photo/Ahn Young-joon)

SAN FRANCISCO (AP) —   A federal safety official said the cockpit voice recorder from Asiana Airlines Flight 214 showed the jetliner tried to abort its landing and come around for another try 1.5 seconds before it crashed at San Francisco airport.

National Transportation Safety Board chief Deborah Hersman said at a news conference Sunday the recorder also showed there was a call to increase airspeed roughly two seconds before impact.

Before that, she said, there was no indication in the recordings that the aircraft was having any problems before it crashed Saturday, killing two passengers and injuring scores of others.

As the shock fades from the crash of Asiana Airlines flight 214, investigators are continuing their investigation into what led the Boeing 777 to crash land at San Francisco International Airport.

Here's what we know about the crash as of Sunday afternoon:

— WHAT HAPPENED: The Asiana Airlines Boeing 777 crashed while landing after a likely 10-hour-plus flight from Seoul, South Korea. The flight originated in Shanghai and stopped in Seoul before the long trek to San Francisco.

— PACKED FLIGHT: There were 307 people aboard — 291 passengers and 16 crew members. Two people aboard the plane died. Of the 182 injured people taken to hospitals, 19 remained hospitalized on Sunday, six of them in critical condition. The remaining 133 had minor to moderate injuries, while many of the other passengers or crew members had more minor injuries that didn't require extra treatment. Thirty of the passengers were children.

— WHAT WENT WRONG? The cause isn't clear, but based on witness accounts and video of the wreckage, one aviation safety expert suggested the plane may have approached the runway too low and a part of the plane may have caught the seawall at the end of the runway. Some eyewitnesses said the aircraft seemed to lose control and that the tail may have hit the ground. The NTSB was sending a team to the site to probe the crash.

The Boeing 777 that crashed on Saturday is only the second major accident for the twin-engine, wide-bodied jet in the 18 years the model has been in service, aviation safety expert said.

— PASSENGERS: South Korea's Ministry of Land, Infrastructure and Transport said that the plane's passengers included 141 Chinese, 77 South Koreans, 61 Americans, three Canadians, three from India, one Japanese, one Vietnamese and one from France, while the nationalities of the remaining three haven't been confirmed.

Chinese state media identified the dead as two 16-year-old girls who were middle school students in China's eastern Zhejiang province. China Central Television cited a fax from Asiana Airlines to the Jiangshan city government in identifying them as Ye Mengyuan and Wang Linjia.

— WHAT'S NEXT? NTSB investigators face their first full day of investigating the cause. Investigators took the flight data recorder to Washington, D.C., overnight to begin examining its contents for clues to the last moments of the flight, officials said. They also plan to interview the pilots, the crew and passengers.

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Copyright 2013 The Associated Press.