Updated from 10:05 a.m. EDTAs bankruptcy fears swirl, the sudden resignation of US Airways ( UAIR) CEO David Siegel could improve the company's chances of winning critical wage cuts from pilots. After two years at the helm of the nation's seventh-largest airline, Siegel announced his resignation at a board meeting late Monday, putting the company further under the control of David Bronner, US Airways' non-executive chairman and CEO of the Retirement Systems of Alabama, which has a $300 million, or 37%, equity stake in the company. One of the pension fund's representatives to the board, Bruce Lakefield, former Chairman and CEO of Lehman Brothers, will replace Siegel as CEO. With the company pushing to gain another round of wage cuts from unions, analysts largely viewed the news as a positive for US Airways, telling investors the company was in a better position to wheedle concessions from unions despite Lakefield's inexperience in the airline industry. Shares of US Airways were off 2 cents, or 0.6%, to $3.40, hitting a 52-week low of $3.31 shortly after the open of trading on Tuesday. "