Pratt & Whitney T73
The Pratt & Whitney T73 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. Turboshaft versions for naval use are known as the FT12, and have been used on the Iroquois-class destroyer.
Variants
;T73-P-1;T73-P-700
;JFTD12A-3
;JFTD12A-4A
;JFTD12A-5A
;FT12:Marine powerplant