US Airways: Could Liquidate Without Cuts  WASHINGTON (Reuters) - US Airways &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=UAIRQ.OB target=/stocks/quickinfo/fullquote"&gt;UAIRQ.OB&lt;/A&gt; wants a  bankruptcy judge to impose temporary wage and other cost cuts  on its union workers, warning that it only has enough cash to  operate through January.