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NTSB chair: Asiana pilots relied too much on automation

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NTSB acting Chairman Christopher Hart makes comments about the Asiana Airlines plane that crashed in San Francisco in 2013. (Source: CNN) NTSB acting Chairman Christopher Hart makes comments about the Asiana Airlines plane that crashed in San Francisco in 2013. (Source: CNN)

WASHINGTON, DC (CNN) - National Transportation Safety Board acting Chairman Christopher Hart said Tuesday morning he believes the flight crew "over-relied" on the plane's automated systems.

The NTSB met Tuesday morning to determine what caused last year's deadly Asiana Airlines crash at the San Francisco International Airport.

"The Boeing 777 is one of the most sophisticated and automated aircraft in service," Hart said. "Automation has unquestionably made aviation safer and more efficient, but the more complex automation becomes the more challenging it is to ensure that the pilots adequately understand it. In this instance the flight crew over-relied on automated systems that they did not fully understand. As a result, they flew too low and too slow and collided with the seawall at the end of the runway."

The crash left three dead and 200 injured.

The panel is expected to vote later today to determine its official decision on the probable cause of the crash.

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