| Name | Designator | Engine Manufacturer |
|---|---|---|
| CH-19 | S55P | SIKORSKY |
| H-19 | S55P | SIKORSKY |
| S-55 | S55P | SIKORSKY |
| S-55A | S55P | SIKORSKY |
| S-55C | S55P | SIKORSKY |
| H-19 Chickasaw | S55P | SIKORSKY |
| HH-19 | S55P | SIKORSKY |
| HO4S | S55P | SIKORSKY |
| HRS | S55P | SIKORSKY |
| UH-19 | S55P | SIKORSKY |
| UH-19 Chickasaw | S55P | SIKORSKY |