Delivered to Executive Jet as N525EJ in 1967. To Caledonian Airways as G-AYEX in 1970, merged into Caledonian/BUA in 1970 and renamed British Caledonian in 1971. To St.Lucia Airways as N525EJ in 1985, then to Keyway Air Transport in 1986 and HCL Aviation as N707HL in 1989. To E-Systems in 1989 and converted to EC-137D 67-19417 by 1992. Withdrawn from use at Davis-Monthan AFB in 2002.