This B-737 aircraft is cn #19945/185, a 737-222. It was built in June 1969 and delivered to United Airlines in July 1969 and leased to Nordair the same month. It was returned to United in September 1970 and acquired by Frontier in September 1976 and became the property of Continental Airlines in October 1986. It was acquired by Glenwood AIG in March 1995. In December 1995 it was leased to Aero Chile and then to National Airlines in June 1996. It was acquired by Avant Air Lines in November 1998 and seen in derelict condition in October 2002.