Helicopter Sikorsky H-34A Choctaw Serial 58-637 Register SA.23 used by Sud-Est Sud Est (SNCASE - Sud Est). Built 1957. Aircraft history and location Aircraft History For SA.23 see also 1957 H-34A SA.23 SA.23 Sud-Est 1957-07-26Sikorsky H-34A c/n 58-637 del as components to Sud Aviation, c/n SA.23, 26Jul57 [See SA.23 for srrvice details.] Send Updates Use APP to upload photo @ (optional) When Now? / / Send