Two 190 - horsepower ( 140 kW ) Kossov M - 12 engines were originally intended to be used .
Engines were unavailable and the 145 - horsepower ( 108 kW ) Shvetsov M - 11FM had to be used instead .
Two 190 - horsepower ( 140 kW ) Kossov M - 12 engines were originally intended to be used , but they were unavailable and the 145 - horsepower ( 108 kW ) Shvetsov M - 11FM had to be used instead .