U.S. officials are investigating why a Southwest Airlines Co. jet blew two tires during an aborted takeoff in Sacramento, Calif.
Federal Aviation Administration spokesman Ian Gregor said Thursday that the agency hasn't determined the cause of Tuesday night's incident.
There were 130 passengers aboard the Seattle-bound 737. No one was injured. Officials closed the runway at Sacramento International Airport but reopened it on Wednesday.
Tires on jetliners can blow out after hitting debris on the runway, from problems with the plane or the tires, or from heavy braking.
Southwest towed the plane off the runway. Katie McDonald, a spokeswoman for Southwest, said Thursday that the Dallas-based airline is working with the FAA to find the cause of the blowout. She said the plane has not been returned to service.