Delivered new to Humana Inc on the US register as N733K on 26 Feb 1982. To N733CF in Jan 1988. At some point upgraded to a Challenger 600S with winglets. To N193DQ on 19 Oct 1995. To N141TS on 23 Apr 1999. To N141RD on 15 Aug 2003. Still current in 2024.