Pratt & Whitney Canada PT6T
| PT6T Twin-Pac T400 | |
|---|---|
| PT6T-3B as installed in a Bell 412 helicopter | |
| Type | Turboshaft |
| National origin | Canada |
| Manufacturer | Pratt & Whitney Canada |
| Major applications | Bell AH-1 SeaCobra Bell 212 Bell 412 Sikorsky S-58T |
| Developed from | Pratt & Whitney Canada PT6 |
The Pratt & Whitney Canada PT6T Twin-Pac is a turboshaft engine designed for helicopters. Manufactured by Pratt & Whitney Canada, its first application was in the Bell 212 and UH-1N Twin Huey helicopter family. The PT6T Twin-Pac consists of two PT6A power turbines driving a common output reduction gearbox, producing up to 2,000 hp at 6,000 rpm. The engine is designated T400 by the U.S. military.