9/45: TOS USAAF. 17 Sep '48: Leased to Pan American World Airways as N74178. 23 Jan '53: Returned to USAF. 10/55: Argonaut Airways, registered N74178. 7/60: Riddle Airlines. 12/69: Span East Airlines. 30 Jul 70: Re-registered as N608SE. 7/71: Ortner Air Services. 2/76: Confederate Air Force, Harlingen, TX. 4 Nov '76: Re-registered as N78774. 1991: CAF Midland, TX. 4 Jan '11: Warriors and Warbirds Inc, Monroe, NC.