On February 7, 2020, a Bell-4gsub407 helicopter, registration RA-01893, was operating in the Laishinsky District of Russia. The pilot-in-command was conducting a mission to survey livestock complexes located south of Kazan. The flight was scheduled for departure at 04:50 following approved airspace usage procedures.
Prior to departure, the pilot-in-command performed all necessary preflight checks, including refueling and weight and balance calculations. The aircraft's takeoff weight was approximately 2060 kg, which was within the maximum takeoff weight limit of 2268 kg. The center of gravity was calculated at approximately 3223.8 mm, falling within the permissible range of 3023 mm to 3277 mm. The aircraft carried one pilot and two passengers.
At the time of the flight, the pilot-in-command had determined that the weather forecast met the meteorological minimums required by the flight operations manual. However, a medical examination of the pilot was not conducted because no authorized medical professional was available at the facility. The pilot-in-command made the independent decision to proceed with the flight.
The accident occurred during the flight, resulting in a collision with the ground. The crash caused one fatality.