New York — When Scott Kirby in August left American Airlines for United Airlines, his roughly $13 million separation agreement provided that he would still make himself available for testimony and preparation "in connection with the company's pending dispute with Sabre Corporation and any related actions or appeals."

Under the name it took on when it was filed more than five years ago, that US Airways Inc. vs. Sabre Holdings Corp. dispute on Monday went to trial in U.S. District . . .

The full content is available to subscribers