Many think Mr. Siegel was forced out by chairman David Bronner.
US Airways is currently seeking cost cuts from unions to attain a lower cost structure, in order to more readily compete with low-cost carriers. This includes wage and benefit concessions, changes in work rules, and increases in productivity. The company is also trying to increase aircraft utilization and restructure the hub network.
Whether these cost cuts will be successful, or will be attained, is yet to be seen.