FILE-In this Thursday, Sept. 20, 2012, file photo, over 200 American Airline pilots march on a picket line at O'Hare International in Chicago, Ill. A federal appeals court has ruled against American Airlines, which tried to block a union election among nearly 10,000 employees. The 5th U.S. Circuit Court of Appeals in New Orleans overturned a district court judge's ruling in American's favor. The appeals court said Wednesday, Oct. 3, 2012, that the judge didn't have grounds to invalidate a federal panel's decision to schedule an election among American's passenger-service agents. (AP Photo/M. Spencer Green, FIle)

Associated Press
FILE-In this Thursday, Sept. 20, 2012, file photo, over 200 American Airline pilots march on a picket line at O'Hare International in Chicago, Ill. A federal appeals court has ruled against American Airlines, which tried to block a union election among nearly 10,000 employees. The 5th U.S. Circuit Court of Appeals in New Orleans overturned a district court judge's ruling in American's favor. The appeals court said Wednesday, Oct. 3, 2012, that the judge didn't have grounds to invalidate a federal panel's decision to schedule an election among American's passenger-service agents.  (AP Photo/M. Spencer Green, FIle)
FILE-In this Thursday, Sept. 20, 2012, file photo, over 200 American Airline pilots march on a picket line at O'Hare International in Chicago, Ill. A federal appeals court has ruled against American Airlines, which tried to block a union election among nearly 10,000 employees. The 5th U.S. Circuit Court of Appeals in New Orleans overturned a district court judge's ruling in American's favor. The appeals court said Wednesday, Oct. 3, 2012, that the judge didn't have grounds to invalidate a federal panel's decision to schedule an election among American's passenger-service agents. (AP Photo/M. Spencer Green, FIle)
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