«Mountain Helicopters» Group provides the complete borescopy of the aircraft engines to identify any nicks that go beyond the limitations of technical operating conditions, as well as analyze the hot part and other vital elements of aircraft engines. This type of maintenance is extremely important, particularly for Mi-8MTV-1, Mi-8AMT, Mi-171 and other types of helicopters, for their intensive use in harsh climatic conditions, in high mountains, in the range of extremely low and high temperatures.