Where some form of compromise between competing groups of pilots was inevitable, the union did not act irrationally in reaching an agreement that disfavored one group. The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. District Judge James F. Holderman. United Airlines and Continental Airlines merged in 2010, forming a new, larger United Airlines. After the merger, the two airlines needed to produce unified seniority and longevity rosters for pilots. A single union, the Air Line Pilots Association …