Kim Yoon-ju, a flight attendant who was working aboard Asiana Airlines flight 214 when it crash-landed at San Francisco airport, cries as she is greeted by Park Sam-koo, Chairman of the Kumho-Asiana group, upon her arrival at Incheon Airport in Incheon, South Korea, on July 11, 2013. #

In this photo taken by Asiana Airlines flight 214 passenger Eugene Anthony Rah, passengers walk away from the Boeing 777 aircraft after a crash-landing at San Francisco International Airport, on July 6, 2013. Some can be seen carrying luggage and other carry-on items, spurring widespread criticism. #

Fire crews work to extinguish flames as passengers evacuate an Asiana Airlines Boeing 777 aircraft after a crash-landing at San Francisco International Airport, on July 6, 2013. #

Authorities stand at the seawall along the start of a runway where an Asiana Airlines Boeing 777 plane crashed while landing at San Francisco International Airport, on July 6, 2013. #

At lower left, the wreckage of flight 214 lies burned on a runway at San Francisco International Airport, the city of San Francisco visible in the distance, on July 6, 2013. #

NTSB Aerospace Engineer Greg Smith receives flight recorders from Asiana Airlines flight 214 in the NTSB laboratory in Washington, on July 7, 2013. Investigators took the flight data recorder, left foreground, and the cockpit voice recorder, behind it, from the Boeing 777-200 to NTSB headquarters overnight to begin examining its contents for clues to the last moments of the flight, officials said. #

Asiana Airlines President and CEO Yoon Young-doo, fourth from right, and board members bow during a press conference after a crash landing of an Asiana Airlines flight at San Francisco airport, at its head office in Seoul, South Korea, on July 7, 2013. #

National Transportation Safety Board Chairman Deborah Hersman (front) and Investigator-in-Charge Bill English look at interior damage to Asiana Airlines Flight 214, in this July 6, 2013 photo. #

A passenger of Asiana flight 214, who declined being identified, leaves San Francisco General Hospital after being treated for injuries suffered during the crash, on July 7, 2013. #

An unidentified family member of one of two Chinese students killed in the crash of Asiana Airlines flight 214, cries at the airline's counter as she and other family members check in for a flight to San Francisco, at Pudong International Airport in Shanghai, China, on July 8, 2013. #

Asiana Airlines President and CEO Yoon Young-doo, left, greets unidentified family members of two Chinese students killed in an Asiana Airlines plane crash on Saturday at San Francisco International Airport, at the transit lounge of the Incheon International Airport in Incheon, South Korea, on July 8, 2013. #

Students of the Jiangshan Middle School light candles to form a heart shape and initials (below), of the victims Yang Mengyuan and Wang Linjia of the Asiana Airlines crash, in Quzhou, Zhejiang province, on July 8, 2013. #

Kim Yoon-ju, a flight attendant aboard Asiana Airlines flight 214 when it crash-landed at San Francisco airport, arrives at the Incheon Airport in South Korea, on July 11, 2013. #