The Pratt & Whitney T73 (company designation JFTD12) is a turboshaft engine. Based on the JT12A, the T73 powered the Sikorsky CH-54 Tarhe and its civil counterpart Sikorsky S-64 Skycrane flying crane heavy-lift helicopters.Pratt & Whitney JT12 (United States), Aero-engines - Turbojet, Jane's Information Group, 2011.05.09 Turboshaft versions for naval use are known as the FT12, and have been used on the Iroquois-class destroyer.
Variants T73-P-1 Basic military model, rated at 4,500 horsepower (3,355 kW) takeoff power and 4,000 horsepower (2,982 kW) maximum continuous power
T73-P-700 Higher-power military model with improved internal components; rated at 4,800 horsepower (3,579 kW) takeoff power and 4,430 horsepower (3,303 kW) maximum continuous power
JFTD12A-3
JFTD12A-4A Civilian equivalent of T73-P-1
JFTD12A-5A Civilian equivalent of T73-P-700Type Certificate Data Sheet E15EA, US DoT - FAA, 2011.09.12
FT12Marine powerplant
Applications Sikorsky CH-54 Tarhe (T73) Sikorsky S-64 Skycrane/Erickson Air-Crane S-64 Skycrane (JTFD12) Iroquois-class destroyer (FT12AH-3)
Specifications (T73-P-1)
See also
References
EASE Type Certificate IM.E.106 retrieved 14 February 2014
External links Atlantic Canadian Aviation: JT12 for Canadair aircraft