This weekend I flew from DCA-BOS and back on US Airways Shuttle 737-301s (N339US and N349US). While in Boston, I saw a US Airways Shuttle 727-200 in new colors at the gate for the 2:00 pm LGA flight. I had thought all 727s were withdrawn on Dec. 31, but when I got home, I checked the US Airways website, and sure enough, 727s are still scheduled on the Shuttle. I thought the Shuttle 727s were un-hushkitted and couldn't fly in 2000. Does anyone have any information on these aircraft?