Sikorsky S-55 / H-19 Chickasaw Family
The Sikorsky S-55 was an influential single-main-rotor utility-helicopter family whose forward-mounted piston engine freed a large cabin beneath the rotor hub. First flown in 1949, it carried passengers, cargo, stretchers, and external loads for military and civil operators, and its H-19, HO4S, and HRS variants established a durable pattern for transport, search-and-rescue, air-ambulance, and anti-submarine work.
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Identity
- Aliases
- S-55Sikorsky H-19H-19 ChickasawYH-19HO4SHRSWestland Whirlwind
- Family Name
- Sikorsky S-55
- Full Name
- Sikorsky S-55 / H-19 Chickasaw Family
- Roles
- utilitysearch_and_rescueair_ambulancemilitary
- Status
- active
- Type
- aircraft
Details
- Aircraft Specs
- Configuration
- rotorcraft
- Operating Modes
- land
- Takeoff Landing Capabilities
- conventional
- Description
- The Sikorsky S-55 was an influential single-main-rotor utility-helicopter family whose forward-mounted piston engine freed a large cabin beneath the rotor hub. First flown in 1949, it carried passengers, cargo, stretchers, and external loads for military and civil operators, and its H-19, HO4S, and HRS variants established a durable pattern for transport, search-and-rescue, air-ambulance, and anti-submarine work.
- First Flight Year
- 1,949
- Manufacturer
- Propulsion Configurations
- Entries
- Nested value
- Name
- S-55 R-1340-57 Wasp installation
- Notes
- The S-55 family used a single nose-mounted radial engine; later military and licensed variants included related R-1340 and R-1300 installations, which are separate fits rather than a simultaneous list.
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Assets & Meta
- Creation Time
- July 31, 2026 at 07:21:15 UTC
- Updated Time
- July 31, 2026 at 07:21:15 UTC