USMC version of the HO4S-1 with P&W R-1340-57 Wasp engine for eight troops, 60 built, plus one static airframe used for testing. 
List of Operators of Sikorsky HRS-1 | |
| From | Organisation with model HRS-1 | ||
| 1951 |
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| 1953 |
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| 1954 |
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| 1957 |
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| Construction Numbers on database of HRS-1 | ||||||
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Construction Numbers | Help Us | |
| C/N | Year | History | ||
| Filter | ||||
| 55-017 | 1951 |  127783 : Sikorsky S-55 c/n 55-017, ff:?; del USN as HRS-1, 12778+ N4781S : ex 127783 | ||
55-018  | 1951 | 127784 : Sikorsky S-55 c/n 55-018, ff:?; del USMC as HRS-1, 1277+ w/o 27may52 at Hapsu, Korea | ||
| 55-019 | 1951 | 127785 : Sikorsky S-55 c/n 55-019, ff:?; del USMC as HRS-1, 1277+ | ||
| 55-020 | 1951 | 127786 : Sikorsky S-55 c/n 55-020, ff:?; del USMC as HRS-1, 1277+ N4779S : ex 127786  XB-WAV : ex N4779S N9013R : ex XB-WAV | ||
| 55-021 | 1951 | 127787 : Sikorsky S-55 c/n 55-021, ff:?; del USMC as HRS-1, 1277+ N4780S : ex 127787 | ||
| 55-022 | 1951 | 127788 : Sikorsky S-55 c/n 55-022, ff:?; del USMC as HRS-1, 1277+ w/o 03jun53 at El Moro Canyon, CA | ||
 | 55-023 | 1951 | 127789 : Sikorsky S-55 c/n 55-023, ff:?; del USMC as HRS-1, 1277+ 01sep52 pictured with HMR-161, USS Sicily (CVE-118) at +  127789 : xfer MAP to French Air Force as 127789, for Indochina, + 51-17663 :  h-19a Returned to USAF as H-19A, 51-17663, Jun57.  51-17663 : h-19a xfer MAP to Royal Thai Air Force as H-19A, 51-17663, 29+  ? : ex 127789 | |
| 55-024 | 1951 | 127790 : Sikorsky S-55 c/n 55-024, ff:?; del USMC as HRS-1, 1277+ 127790 : MAP to French Air Force for Indochina, dates unk. 51-17664 : h-19a Returned to USAF as H-19A, 51-17664, Jun57. 51-17664 : h-19a xfer MAP to Royal Thai Air Force as H-19A, 51-17664, 29+ | ||
| 55-025 | 1951 | 127791 : Sikorsky S-55 c/n 55-025, ff:?; del USMC as HRS-1, 1277+ 127791 : xfer MAP to French Air Force as 127791 for Indochina, d+ | ||
| 55-026 | 1951 | 127792 : Sikorsky S-55 c/n 55-026, ff:?; del USMC as HRS-1, 1277+ w/o 22oct51 X-83, Korea | ||
| 55-027 | 1951 | 127793 : Sikorsky S-55 c/n 55-027, ff:?; del USMC as HRS-1, 1277+ N49557S : ex 127793 N4597CJ : ex N49557S | ||
| 55-028 | 1951 | 127794 : Sikorsky S-55 c/n 55-028, ff:?; del USMC as HRS-1, 1277+ 20jul55 dbr | ||
| 55-029 | 1951 | 127795 : Sikorsky S-55 c/n 55-029, ff:?; del USMC as HRS-1, 1277+ w/o 30oct52 accident in Korea | ||
| 55-030 | 1951 | 127796 : Sikorsky S-55 c/n 55-030, ff:?; del USMC as HRS-1, 1277+ w/o 01dec53 in Korea | ||
| 55-031 | 1951 | 127797 : Sikorsky S-55 c/n 55-031, ff:?; del USMC as HRS-1, 1277+ 127797 : xfer MAP to French Air Force for Indochina, dates unk. 51-17662 : h-19a Returned to USAF as H-19A, 51-17662, Jun57. 51-17662 : h-19a xfer MAP to Thailand as H-19A, 51-17662, 29Jan59; del F+ ? : ex 127797 | ||
| 55-032 | 1951 | 127798 : Sikorsky S-55 c/n 55-032, ff:?; del USMC as HRS-1, 1277+ 12feb53 ditched Pusan, Korea | ||
| 55-033 | 1951 | 127799 : Sikorsky S-55 c/n 55-033, ff:?; del USMC as HRS-1, 1277+ N2798 : ex 127799 | ||
| 55-035 | 1951 | 127800 : Sikorsky S-55 c/n 55-035, ff:?; del USMC as HRS-1, 1278+ soc 06jul57 | ||
| 55-036 | 1951 | 127801 : Sikorsky S-55 c/n 55-036, ff:?; del USMC as HRS-1, 1278+ w/o 01sep53 Ream Fld, CA | ||
| 55-037 | 1951 | 127802 : Sikorsky S-55 c/n 55-037, ff:?; del USMC as HRS-1, 1278+ w/o 28sep51 in Korea | ||
| 55-038 | 1951 | 127803 : Sikorsky S-55 c/n 55-038, ff:?; del USMC as HRS-1, 1278+ served as /HR-14 with HMR-161 during the Korean War w/o 01mar52 Korea | ||
| 55-039 | 1951 | 127804 : Sikorsky S-55 c/n 55-039, ff:?; del USMC as HRS-1, 1278+ | ||
| 55-040 | 1951 | 127805 : Sikorsky S-55 c/n 55-040, ff:?; del USMC as HRS-1, 1278+ CF-MOT : ex 127805 | ||
| 55-041 | 1951 | 127806 : Sikorsky S-55 c/n 55-041, ff:?; del USMC as HRS-1, 1278+ | ||
| 55-042 | 1951 | 127807 : Sikorsky S-55 c/n 55-042, ff:?; del USMC as HRS-1, 1278+ w/o 16sep53 at Cherry Point | ||
| 55-043 | 1951 | - : Sikorsky HRS-1 c/n 55-043, ff: n/a; del to USN as HRS-1+ | ||
| 55-044 | 1951 | 127808 : Sikorsky S-55 c/n 55-044, ff:?; del USMC as HRS-1, 1278+ 127808 : w/o 28oct53 | ||
| 55-045 | 1951 | 127809 : Sikorsky S-55 c/n 55-045, ff:?; del USMC as HRS-1, 1278+ | ||
| 55-046 | 1951 | 127810 : Sikorsky S-55 c/n 55-046, ff:?; del USMC as HRS-1, 1278+ w/o 06mar54 | ||
| 55-047 | 1951 | 127811 : Sikorsky S-55 c/n 55-047, ff:?; del USMC as HRS-1, 1278+ | ||
| 55-048 | 1951 | 127812 : Sikorsky S-55 c/n 55-048, ff:?; del USMC as HRS-1, 1278+ soc Feb58 | ||
| 55-049 | 1951 | 127813 : Sikorsky S-55 c/n 55-049, ff:?; del USMC as HRS-1, 1278+ w/o 23may55 USS Mindoro (CVE-120) | ||
| 55-050 | 1951 | 127814 : Sikorsky S-55 c/n 55-050, ff:?; del USMC as HRS-1, 1278+ soc 09apr58 GI Memphis | ||
| 55-051 | 1951 | 127815 : Sikorsky S-55 c/n 55-051, ff:?; del USMC as HRS-1, 1278+ soc 10apr57 Cherry Point | ||
| 55-052 | 1951 | 127816 : Sikorsky S-55 c/n 55-052, ff:?; del USMC as HRS-1, 1278+ soc 10apr57 | ||
| 55-053 | 1951 | 127817 : Sikorsky S-55 c/n 55-053, ff:?; del USMC as HRS-1, 1278+ soc 30sep58 Floyd Bennet Fld, NY | ||
| 55-054 | 1951 | 127818 : Sikorsky S-55 c/n 55-054, ff:?; del USMC as HRS-1, 1278+ 127818 : xfer MAP to French Air Force as 127818 for Indochina us+ 51-17665 : h-19a rtnd USAF as H-19A, 51-17665, Jun57. 51-17665 : h-19a xfer MAP to Royal Thai Air Force as H-19A, 51-17665, 29+ | ||
| 55-055 | 1951 | 127819 : Sikorsky S-55 c/n 55-055, ff:?; del USMC as HRS-1, 1278+ soc 28feb57 | ||
55-056  | 1951 | 127820 : Sikorsky S-55 c/n 55-056, ff:?; del USMC as HRS-1, 1278+  3007 : del FAD as 3007, 1959; wfu & scr 1969. | ||
| 55-057 | 1951 | 127821 : Sikorsky S-55 c/n 55-057, ff:?; del USMC as HRS-1, 1278+ soc 21feb58 San Diego | ||
| 55-058 | 1951 | 127822 : Sikorsky S-55 c/n 55-058, ff:?; del USMC as HRS-1, 1278+ w/o 25mar53 at Ascom City, Korea | ||
| 55-059 | 1951 | 127823 : Sikorsky S-55 c/n 55-059, ff:?; del USMC as HRS-1, 1278+ N6872C : ex 127823; w/o 09sep67 | ||
| 55-060 | 1951 | 127824 : Sikorsky S-55 c/n 55-060, ff:?; del USMC as HRS-1, 1278+ w/o 01jan52 at Patuxent River, own rocket hit cockpit | ||
| 55-061 | 1951 | 127825 : Sikorsky S-55 c/n 55-061, ff:?; del USMC as HRS-1, 1278+ | ||
| 55-062 | 1951 | 127826 : Sikorsky S-55 c/n 55-062, ff:?; del USMC as HRS-1, 1278+ soc Feb58 San Diego | ||
| 55-063 | 1951 | 127827 : Sikorsky S-55 c/n 55-063, ff:?; del USMC as HRS-1, 1278+ soc Sep57 Memphis | ||
| 55-066 | 1951 | 127828 : Sikorsky S-55 c/n 55-066, ff:?; del USMC as HRS-1, 1278+ soc Aug57 pres. Quantico as 127834 | ||
| 55-067 | 1951 | 127829 : Sikorsky S-55 c/n 55-067, ff:?; del USMC as HRS-1, 1278+ w/o 1951 within 15 days after del. w/o 17oct51 | ||
| 55-068 | 1951 | 127830 : Sikorsky S-55 c/n 55-068, ff:?; del USMC as HRS-1, 1278+ N90009 : ex 127830 N9009R : ex N90009 | ||
| 55-069 | 1951 | 127831 : Sikorsky S-55 c/n 55-069, ff:?; del USMC as HRS-1, 1278+ N74125 : ex 127831 N74125J : ex N74125 | ||
| 55-070 | 1951 | 127832 : Sikorsky S-55 c/n 55-070, ff:?; del USMC as HRS-1, 1278+ 127832 : Transferred MAP to French Air Force for Indochina use, + 51-17666 : h-19a Returned to USAF as H-19A, 51-17666, Jun57. 51-17666 : h-19a xfer MAP to Royal Thai Air Force as H-19A, 51-17666, 29+ | ||
| 55-071 | 1951 | 127833 : Sikorsky S-55 c/n 55-071, ff:?; del USMC as HRS-1, 1278+ wfu Jan58 GI Memphis | ||
| 55-072 | 1951 | 127834 : Sikorsky S-55 c/n 55-072, ff:?; del USMC as HRS-1, 1278+ | ||
| 55-073 | 1951 | 127835 : Sikorsky S-55 c/n 55-073, ff:?; del USMC as HRS-1, 1278+ soc 1957 GI Memphis | ||
| 55-074 | 1951 | 127836 : Sikorsky S-55 c/n 55-074, ff:?; del USMC as HRS-1, 1278+ | ||
| 55-077 | 1951 | 127837 : Sikorsky S-55 c/n 55-077, ff:?; del USN as HRS-1, 12783+ | ||
| 55-078 | 1951 | 127838 : Sikorsky S-55 c/n 55-078, ff:?; del USMC as HRS-1, 1278+ 26aug57 soc Memphis | ||
| 55-079 | 1951 | 127839 : Sikorsky S-55 c/n 55-079, ff:?; del USMC as HRS-1, 1278+ N90010 : ex 127839 N9010R : ex N90010 XB-WOJ : ex N9010R | ||
| 55-080 | 1951 | 127840 : Sikorsky S-55 c/n 55-080, ff:?; del USMC as HRS-1, 1278+ | ||
| 55-081 | 1951 | 127841 : Sikorsky S-55 c/n 55-081, ff:?; del USMC as HRS-1, 1278+ w/o 29nov56 near Irvin Lake, CA | ||
| 55-082 | 1952 | 127842 : Sikorsky S-55 c/n 55-082, ff:?; del USMC as HRS-1, 1278+ | ||