This first space shuttle concluded its maiden voyage on April 14, 1981
[DOC] [TLE] April 14, 1981: Landing of Columbia on STS-1  Spaceflight Now [PAR] Apr 14, 2016 ... April 14, 1981: Landing of Columbia on STS-1 ... Air Force Base on this day 35 
years ago, concluding the maiden flight of the space shuttle.