The National Tranportation Safety Board (NTSB) says it will take months to fully complete its investigation into the cause of the crash but it appears that pilot error is a primary focus of the investigation.

The head of the NTSB said the pilots of the Asiana Airlines Boeing 777 were depending on an automated system for their airspeed on approach but did not realize until it was too late that the plane was flying at too slow a speed.