Russian Helicopters' Mi-171A2 completes low temperature trials.

"Helicopters of the Mi-8/17 family have a reputation of low-maintenance and hard-working craft which do not fear difficult conditions. The confirmation of the possibility to operate Mi-171A2 at super low temperatures was expected. I want to thank pilots and technicians who sustained major frosts and completed test trials in a short time," Russian Helicopters CEO Andrey Boginsky said.

GosNII GA experts who participated in the trials noted the short time in flight preparation of Mi-171A2, the convenience of technical maintenance, air and ground operation of the new helicopter, reliable operation of the digital piloting and navigational complex and digital power plant control system, as well as technical diagnostics. All the necessary objective data and documents were obtained for further attestation and additional certification of Mi-171A2 helicopter by the A certification category.

Over 80 changes have been introduced into the Mi-171A2 construction. The helicopter is equipped with VK-2500PS-03 engines (civilian version of the engines for combat Mi-28 helicopters) with a digital control system. Mi-171A2 is distinguished from Mi-8/17 family by a new lifting system. The helicopter has a more efficient X-shaped anti-torque rotor and a new lifting rotor with all-composite blades of upgraded aerodynamic configuration. Thus, due to aerodynamics the lifting rotor thrust of Mi-171A2 grew over 700 kg which improved all flight and technical characteristics.