Airliner Crashes at San Francisco Airport

Asiana Boeing 777. Casualties are still being counted.

 A Boeing 777 operated by Asiana Airlines crashed while landing Saturday at San Francisco International Airport, an FAA spokesman told CNN.

Video from the scene posted on YouTube showed dark gray smoke rising from the plane, which appeared to be upright.

Evacuation slides could be seen extending from one side of the aircraft, from which there was no apparent smoke.