21 January 1972 January 21, 2023AviationLockheed S-3A VikingBryan Swopes 1st flight Rollout 8 Nov ’71 21 January 1972: First flight, Lockheed S-3A Viking Lockheed YS-3A Viking Bu. No. 157994, s/n 349A-1003. (SDASM)
