On February 20, 2023, an AS 35 lot B3 helicopter, registration RA-04060, was involved in a fatal accident in the area of Mount Topkhan, Kemerovo Oblast. The aircraft was operated by OOO "Aerogeo" as part of a contract to provide transportation services for personnel and clients in the Kemerovo region and the Republic of Khakassia.
Prior to the accident, the aircraft had been performing reconnaissance flights of the work area. On February 18, 2023, the crew had conducted flights to identify landing sites on mountainous, snow-covered terrain. The flight on the day of the accident was part of a scheduled operation intended to begin at 11:00.
During the landing phase, the pilot encountered a strong snowstorm. The impact occurred when the rotor blades collided with the surface of the landing area. The accident resulted in one fatality.