The Mi-2 upgraded helicopter powered by the AI-450M engines were staying in the air within about an hour. According to the fuel consumption, helicopter powered by AI-450M engines twice exceeds the similar characteristics of its early modification that is original version of Mi-2.
Moreover, flight airspeed range is expanded: on an average low-altitude airspeed is expanded by 10%, airspeed with altitude increase is expanded up to 30%. Due to the AI-450M engines that is a significant progress for that helicopter.
The Mi-2 upgraded helicopter has got an opportunity and can be attractive for its Operators.