Previously USAAF 43-16408, and NC51179 with TWA since Jan 1946. To ET-T-12 in the late 1940s, still with TWA. Arrived at Prestwick in Oct 1949, then converted to engine carrier for TWA with the Douglas "Plan D" prototype conversion kit by Scottish Aviation between Nov 1952 and Apr 1953. Back to N51179 in the mid 1950s, and later to F-OBCT, 5R-MAK and ET-AGM. Written off in March 1980 in Ethiopia. The same registration ET-T-12 was later carried by C-82 Packet "Ontos" (c/n 10184), also a TWA engine carrier.