The Russian Helicopters holding company under the auspices of Rostec has obtained official approval from the Federal Air Transport Agency for the operational deployment of the Mi-171A2 helicopters in a mountainous environment. So, these versatile aircraft are now sanctioned for operation not only from conventional airfields but also from high-altitude runways situated at elevations of up to 5,000 meters above sea level.
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The Mi-171A2 was submitted to a series of rigorous certification tests in the challenging terrain of the Kabardino-Balkaria mountainous region and the foothills surrounding Mount Elbrus (Picture source: Rostec)
To secure this approval, a series of rigorous certification tests were executed in the challenging terrain of the Kabardino-Balkaria mountainous region and the foothills surrounding Mount Elbrus. During these tests, the Mi-171A2 helicopters underwent numerous flight trials, gradually increasing the payload with each successive mission. The take-off weight was systematically augmented until it reached the maximum permissible limit of 13 tons, demonstrating the aircraft's exceptional performance and stability under demanding conditions.
Furthermore, the Mi-171A2 underwent intensive evaluations at high-altitude test sites, which included the simulation of emergency scenarios. Notably, the helicopter exhibited its remarkable safety features during simulated engine failure scenarios, affirming its capacity for secure takeoffs and landings even under adverse conditions.
The Mi-171A2, a heavy multirole helicopter, represents a fusion of the renowned operational legacy of the Mi-8/17 series with cutting-edge technology. This aircraft has been crafted in close collaboration with helicopter operators, setting benchmarks for medium-class helicopters.
With a maximum speed of 280 km/h and a cruise speed of 260 km/h, the maximum flight range of 800 km with main fuel tanks ensures extended operational capabilities. It can soar to an operational ceiling of 6,000 meters, and its hover ceiling (OGE) at 4,000 meters further enhances its adaptability. Moreover, the Mi-171A2 can withstand a broad operational temperature range, from -50°C to +50°C.
The Mi-171A2 boasts a maximum take-off weight of 13,500 kg when equipped with an external sling cargo. Inside the transport cabin, it can carry a maximum payload of 4,000 kg, while externally, it can lift 5,000 kg. The Mi-171A2 is powered by two turboshaft engines VK-2500PS-03, delivering a take-off power of 2,000 horsepower and a contingency power of 2,700 horsepower.
The Mi-171A2 accommodates an aircrew of two, ensuring operational efficiency and safety. Furthermore, the transport cabin can carry up to 20 passengers.
