This Convair is pretending to be a HC-131A, but in fact it's a Convair 240-11 (ex N280P) which never saw any military service. It was donated to the Castle Air Museum in 1999 and registered to them as N280P on 23 Jun 1999. By Dec 2003 it had been restored in nice USCG markings as "5785". By Jul 2008 those markings had been removed in preparation of a repaint, which is seen in progress in this photo. By Oct 2011 it was back in now very poorly done USCG markings, again as "5785".