Pratt & Whitney PT6A-135A Turboprops

Rated at 550 shp up to ISA+30°C, the -135 enables the C90GTx to climb directly to FL 300 and reach FL 250 in 18 minutes. Maximum cruise speed is 272 KTAS at 9,500 pounds, assuming ISA conditions at FL 200. The engines are part of the “small” PT6A family that range from 450 to 750 shp. Such engines...

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