Model
Improved commercial version with 800HP Wright R-1300-3 cyclone engine. 
List of Operators of Sikorsky S-55C | |
| From | Organisation with model S-55C | ||
| 1954 |
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| 1955 |
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| 1956 |
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| 1957 |
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| 1958 |
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| 1964 |
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| 1968 |
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| Construction Numbers on database of S-55C | ||||||
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1731 operators 48505 serials 22339 photos 4218 heliports     | | ||||