US Airways Asks Pilots for Pay Cut  WASHINGTON (Reuters) - US Airways &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=UAIR.O target=/stocks/quickinfo/fullquote"&gt;UAIR.O&lt;/A&gt;, struggling to  avoid a second bankruptcy, has asked pilots for a 16.5 percent  pay cut, USA Today reported in its Friday editions.