FILE - In this Feb. 7, 2013 file photo, a US Airways jet taxis past an American Airlines jet parked at the gate at Sky Harbor International Airport in Phoenix. The merger of US Airways

 

              FILE - In this Feb. 7, 2013 file photo, a US Airways jet taxis past an American Airlines jet parked at the gate at Sky Harbor International Airport in Phoenix. The merger of US Airways
FILE - In this Feb. 7, 2013 file photo, a US Airways jet taxis past an American Airlines jet parked at the gate at Sky Harbor International Airport in Phoenix. The merger of US Airways and American Airlines has given birth to a mega airline with more passengers than any other in the world. (AP Photo/The Arizona Republic,Tom Tinkle, File) MARICOPA COUNTY OUT; MAGS OUT;