flying 747s according to the airline, had only limited experience flying a boeing 777. just 43 hours. he had never landed that type of plane in san francisco. in this exclusive video obtained by cnn, you can see the plane start to descend, it then appears to strike the seawall, loses control and crashes. >> he was also flying with a check captain or a training captain. there were two other crew members, another captain and first officer who were also flying. again, remember, this is a very long trans pacific flight, the four crew members are there for relief. >> as this animation shows. the wide body jet clipped the seawall which creates a barrier before the plane hit the runway. today firefighters described a