The helicopter is built on a single-rotor scheme with an eight-blade carrier with a controlled pitch and a five-blade tail rotor. With two engines with a capacity of 11 400 HP each and tricycle fixed landing gear. The all-metal fuselage of the semi-monocoque structure has a variable cross-section. In its bow part there is a radio transparent fairing covering the radar antenna, a crew cabin, a cabin for passengers accompanying the cargo and compartments for equipment placement. The Central part of the fuselage includes a cargo compartment measuring 12,00 Р§ 3,25 Р§ (2,95С‡3,57) m and a rear compartment, passing into the end beam. In the transportation and military version of the helicopter can accommodate up to 82 paratroopers with weapons. In the sanitary version of the helicopter can accommodate up to 60 patients on a stretcher. For the loading of bulky cargo in the cargo compartment is located electric winch with a pulling force of up to 500 kg. also, the helicopter is able to carry loads on external suspension. Carrying capacity up to 20 tons of payload.