SAN FRANCISCO - The Asiana Airlines Boeing 777 that crashed at San Francisco's airport on Saturday was traveling "significantly below" its intended speed and its crew tried to abort the landing just seconds before it hit the seawall in front of the runway, the US National Transportation Safety Board said on Sunday.
Information collected from the plane's cockpit voice recorder and flight data recorder indicated that there were no signs of trouble until seven seconds before impact, when the crew tried to accelerate, NTSB Chairwoman Deborah Hersman said at a news conference at the airport.
A stall warning sounded four seconds before impact, and the crew tried to abort the landing and initiate what's known as a "go around" maneuver just 1.5 seconds before crashing, Hersman said.
"Air speed was significantly below the target airspeed," she said.
The crash killed two teenage Chinese students and injured more than 180 people, at least two dozen of them seriously, local officials said.