They are very cost-effective as the latest variant of T55 with 6,000 shaft horsepower. Keep up with the latest Simple Flying ...

2xTextron Lycoming T55-4-714 Turboshaft engines Max Speed: 259 kph Range: 1382 km The MH-47 Chinook and its “E,” “D” and “G” variants are the primary heavy lift transport helicopters ...