Learning from the 777 Crash at San Francisco Airport

Saturday in San Francisco, two passengers were killed and many were injured when an Asiana Airlines Boeing 777 struck a sea wall at the end of a runway, broke into pieces and caught fire. It's known that the plane was flying to low and too slow, but pilot error is only one subject under investigation. At a news conference today, the National Transportation Safety Board reported that the plane landing in San Francisco should have been traveling at 137 knots per hour but may have been going just 85.