Flight Details
On 8 May 2021, the pilot-in-command (commander) of a Mi-2 helicopter, registration RA-15715, completed an initial flight from Kolpakova to Izluchina, landing at 03:37. The flight time, as recorded by the barograph, was 1 hour 25 minutes. The flight proceeded normally.
Accident Flight Planning
At 04:32, the pilot submitted a flight plan to the Magadan Airspace Planning Center for a second flight (the accident flight). The plan (flight route dated 08.05.2021 HR 080433) specified a route from Izluchina to Ostrovnaya and back to Izluchina, with a scheduled departure at 05:30. Airspace clearance was obtained. The flight was to pass through Class C airspace from takeoff to Lake Kotelnoye, and then through Class G airspace to the intended landing site on Ostrovnaya River. The accident site was located in Class C airspace. No violations of airspace usage were recorded.
Pre-Flight Preparation
The pilot began pre-flight preparation at 04:00. Because no medical personnel were available at the landing site, the pilot did not undergo a pre-flight medical examination and made the decision to fly himself, which is permitted under regulations (FAP-128). At 04:10, the helicopter was refueled with 450 liters of TS-1 aviation fuel. A fuel quality certificate was provided to the investigation commission. The total fuel load before departure was 600 liters, sufficient for the planned route.
Weight and Balance
According to maintenance personnel, approximately 200 kg of cargo was loaded, including three propane gas cylinders. The takeoff weight was about 3420 kg, below the maximum takeoff weight of 3700 kg specified in the Mi-2 flight manual. The center of gravity at departure was 0.095 m, within the approved range of -0.185 m to +0.185 m per the flight manual.
Summary of Available Information
The source provides details up to the point of departure. No further information about the accident sequence, injuries, or weather conditions is contained in the source. The investigation commission reviewed the presented materials, but a probable cause is not stated.