NTSB: 'Lot of holes' led to Asiana crash

 A Boeing 777 airplane lies burned on the runway after it crashed landed at San Francisco International Airport July 6, 2013 in San Francisco, California.
 A Boeing 777 airplane lies burned on the runway after it crashed landed at San Francisco International Airport July 6, 2013 in San Francisco, California.

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    NTSB: 'Lot of holes' led to Asiana crash

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The National Transportation Safety Board held a hearing to determine the cause of the 2013 Asiana Flight 214 plane crash.