Civilian 4-place utility helicopter, 3 built. List of Operators of Sikorsky S-52-1 From Organisation with model S-52-1 Construction Numbers on database of S-52-1 3S-52-1 Construction Numbers Help Us C/NYearHistory 52-001 1949 NX92823,NC92823 52-002 1949 NX92819 52-003 1949 NX92824 3 C/N.