Power is being shut down at several buildings and traffic lights on the west side of Los Angeles International Airport.
Crews hope to remove downed power lines from an empty runaway jet.
Heavy equipment is being brought in to tow the American Airlines 767 back inside the airport.
The jet was waiting for maintenance when it smashed through a fence, pulling down power lines and blocking a side street before coming to a stop.
Investigators are trying to determine if the plane´s parking brake was properly set.