Upon nearing age 60 (around 1990), he "discovered" an old family Bible that had his "true" birth certificate inside it. According to it, he was a couple of years younger than he had always thought. Incredibly, he managed to use it to extend his career at UAL a couple more years and feed at the trough (retiring #1 on the 747) that much longer. That's the story. The particulars I don't know, but it did happen.