Piasecki H-21
| H-21 Shawnee/Workhorse | |
|---|---|
| A US Army Piasecki H-21 | |
| General information | |
| Type | Military transport helicopter |
| National origin | United States |
| Manufacturer | Piasecki Helicopter |
| Status | Retired |
| Primary users | United States Air Force |
| Number built | 707 |
| History | |
| Manufactured | 1952–1959 |
| First flight | 11 April 1952 |
| Retired | 1967 |
| Developed from | Piasecki HRP Rescuer |
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The Piasecki H-21 Workhorse/Shawnee is an American helicopter, the fourth of a line of tandem rotor helicopters designed and built by Piasecki Helicopter (later Boeing Vertol). Commonly called "the flying banana", it was a multi-mission helicopter, capable of being fitted with wheels, skis or floats.
The H-21 was originally developed by Piasecki as an Arctic rescue helicopter. The H-21 had cold-weather features permitting operation at temperatures as low as −65 °F (−54 °C) and could be routinely maintained in severe cold weather environments.