S-58T

We have been involved in many FAA modification programs. Our specialty area is conversions from piston to turbine powerplants. In the 1970's we converted S-58 helicopters from the 1500 horsepower R1820 radial engine to the Pratt & Whitney PT6 twin turbine powerplants for the Sikorsky factory. Seventeen helicopters were converted. Many were converted for foreign airlines and Presidental helicopters.