Very rare photo of ex USAAF 42-72334, which was converted by Douglas to C54B-DC, and delivered to Pan Am as NX88892 in August 1946. For some reason the aircraft was registered with the NX prefix, denoting "experimental". It was reportedly never taken in service and remained unnamed (note it only carries the word "Clipper", without an actual name). Instead it went to Avianca Colombia as C-114 in September 1946, but on February 15, 1947 the aircraft crashed into Mount El Tablazo en-route from Barranquilla to Bogotá, killing all 53 people on board - which at the time, was the worst commercial airline crash in history.