** FILE ** In this Oct. 1, 2012 photo, an American Airlines airplane taxis for take off from Seattle-Tacoma International Airport in Seattle. (AP Photo/Ted S. Warren)

Photo by: Ted S. Warren

** FILE ** In this Oct. 1, 2012 photo, an American Airlines airplane taxis for take off from Seattle-Tacoma International Airport in Seattle. (AP Photo/Ted S. Warren)