Production model for USMC. Redesignated CH-37C in 1962 List of Operators of Sikorsky HR2S-1 From Organisation with model HR2S-1 1956 US Marine Corps S-56 H-37 60 1956/70 Construction Numbers on database of HR2S-1 55hr2s-1 Construction Numbers Help Us C/NYearHistoryFilter -- Country -- usa - 55 56-001 1955 138418 56-002 1955 138419 56-003 1956 138420 56-004 1956 138421 56-005 1956 138422 56-007 1956 138423 56-008 1956 138424 56-009 1956 140314 56-011 1957 140315 56-013 1957 140316 56-016 1957 140317 56-017 1957 140318 56-019 1957 140319 56-020 1957 140320 56-023 1957 140321 56-024 1957 140322 56-026 1957 140323 56-027 1957 140324 56-029 1957 140325 56-031 1957 141603 56-032 1957 141604 56-034 1957 141605 56-035 1957 141606 56-038 1957 141607 56-041 1957 141608 56-046 1958 141609 56-055 1958 141610 56-059 1958 141611 56-060 1958 141612 56-062 1958 141613 56-065 1958 141614 56-069 1958 141615 56-070 1958 141616 56-075 1958 141617 56-076 1958 145855 56-081 1958 145856 56-086 1958 145857 56-087 1958 145858 56-091 1958 145859 56-092 1958 145860 56-093 1958 145861 56-095 1958 145862 56-096 1958 145863 56-099 1958 145864 56-100 1958 145865 56-102 1958 145866 56-103 1958 145867 56-106 1958 145868 56-107 1958 145869 56-110 1959 145870 56-111 1959 145871 56-114 1959 145872 56-115 1959 145873 56-118 1959 145874 56-123 1959 145875 55 C/N.
138418 