May 1955 to USAF as 53-7804. Converted to JC-131B from May 1956 to Oct 1968. With NASA as N635NA from Sep 1976 to Dec 1980. Registered as N145GT by Georgia Institute of Technology on Feb 1981. Various operators until Oct 1995 registered as G-FZSO for AllCanada Express. However, while still seen 16 years later the plane has such register, it is not clear if ever really operated by company. Back US register same month. W/O 2019-Feb-08 when due engine problems ditched to the Atlantic Ocean about 50km (30 miles) east of Opa Locka (OPF/KOPF) where it attempt to do emergency landing.