Accident Mil Mi-8T RA-24474, Thursday 27 July 2023
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Date:Thursday 27 July 2023
Time:15:00 LT
Type:Silhouette image of generic MI8 model; specific model in this crash may look slightly different    
Mil Mi-8T
Owner/operator:Altai Avia
Registration: RA-24474
MSN: 98628796
Year of manufacture:1986
Total airframe hrs:11492 hours
Fatalities:Fatalities: 6 / Occupants: 16
Other fatalities:0
Aircraft damage: Destroyed
Location:Tyungur, Ust-Koksinsky district, Altai Republic -   Russia
Phase: Landing
Nature:Passenger - Non-Scheduled/charter/Air Taxi
Departure airport:Belukha Mountain area
Destination airport:Tyungur
Investigating agency: MAK
Confidence Rating: Accident investigation report completed and information captured
A Altai Avia Mil Mi-8T struck a utility pole and crashed when attempting to land near the Tyungur village, Ust-Koksinsky district, Altai Republic.

The aviation accident involving the Mi-8T RA-24474 helicopter occurred during the day under visual meteorological conditions while landing on a site chosen from the air. The accident resulted from a collision between the aircraft's tail boom and tail rotor with a reinforced concrete power line support and the subsequent collision of the helicopter with the ground.

Contributing factors included:
- Choosing a landing site without considering a safe distance to obstacles;
- Failing to account for the influence of a gusty tailwind;
- Unwarranted execution of a turn while hovering before landing;
- Uncontrolled lateral movement of the helicopter before landing;
- Insufficient caution by the pilot-in-command during landing;
- Likely exceeding the maximum tailwind speed limits during hovering and turning.

Accident investigation:
Investigating agency: MAK
Report number: 
Status: Investigation completed
Duration: 9 months
Download report: Final report

Final Report: (photo)

History of this aircraft

Ex CCCP-24474


  • 13th worst accident in 2023
  • 239th worst accident of this aircraft type
  • 236th worst accident of this aircraft type at the time



Photo: MAK


Revision history:

27-Jul-2023 09:22 harro Added
27-Jul-2023 09:25 harro Updated
27-Jul-2023 11:47 RobertMB Updated
27-Jul-2023 12:37 Iceman 29 Updated
27-Jul-2023 14:12 vasilf Updated
27-Jul-2023 14:41 Hans Gruber Updated
27-Jul-2023 21:01 Aerossurance Updated
02-Aug-2023 07:48 Hans Gruber Updated
17-May-2024 08:45 Hirurg Updated [Time, Source]
17-May-2024 09:13 ASN Updated [Total fatalities, Narrative, Category, Accident report]
17-May-2024 09:15 ASN Updated [Departure airport, Narrative, Photo]

Corrections or additions? ... Edit this accident description

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