Asiana crew attempted to abort landing
Reports from the investigation into Saturday's Asiana Airlines crash suggest the there were no indications of trouble until seven seconds before impact when the crew attempted to increase the plane's speed. The AP quoted National Transportation Safety Board head Deborah Hersman saying the plane was flying "significantly below" the appropriate speed of 137 knots per hour, or 157 miles per hour. "We're not talking about a few knots," she said.
Seven seconds before the crash, pilots recognized the need to increase speed, she said, basing her comments on an evaluation of the cockpit voice and flight data recorders that contain hundreds of different types of information on what happened to the plane. Three seconds later, the aircraft's stick shaker — a piece of safety equipment that warns pilots of an impending stall — went off. The normal response to a stall warning is to boost speed and Hersman said the throttles were fired and the engines appeared to respond normally.
At 1.5 seconds before impact, there was a call from the crew to abort the landing.