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| Date: | Monday 14 July 2025 |
| Time: | 15:57 LT |
| Type: |  Mil Mi-8T |
| Owner/operator: | Convers-Avia opb APK Vzlyot LLC |
| Registration: | RA-25660 |
| MSN: | 9818838 |
| Year of manufacture: | 1981 |
| Fatalities: | Fatalities: 5 / Occupants: 5 |
| Other fatalities: | 0 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Kheijanskaya Ridge, Khabarovsk krai -
 Russia
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | Okhotsk Airport (OHO/UHOO) |
| Magadan-Sokol Airport (GDX/UHMM) | |
| Investigating agency: | MAK |
| Confidence Rating: |  Accident investigation report completed and information captured |
A Mil Mi-8T helicopter, RA-25660, impacted the slope of one of the mountains in the Kheijanskaya Ridge, approximately 130 km from Okhotsk, Khabarovsk Krai, Russia. All five on board were killed.
The helicopter operated on a flight from Chumikan to Magadan via Okhotsk. It was being flown back to its base at Magadan after maintenance.
MAK Conclusion
The aviation accident involving the Mi-8T helicopter, registration RA-25660, occurred during daytime as a result of the aircraft colliding with the slope of a mountain ridge while flying in mountainous terrain under conditions of cloud-covered peaks.
The accident resulted from a combination of the following factors:
- Insufficient crew training for mountain flying;
- Crew navigation error (entering an amphitheater-shaped valley);
- Flight conducted at altitudes insufficient to maintain the required distance from the lower cloud base;
Failure of the crew to make a timely decision to turn back for a safe exit from the valley under conditions of mountains being obscured by clouds.
Accident investigation:
 |
|
Sources:
https://t.me/korenyako/1622
https://t.me/dvtproc/804
https://t.me/vm_sut/5411
https://t.me/mchs_official/30386
https://t.me/vm_sut/5419
https://t.me/aviaincident/43835
https://t.me/aviaincident/43836
https://russianplanes.net/reginfo/10837
https://www.themoscowtimes.com/2025/07/16/five-killed-in-helicopter-crash-in-russias-far-east-a89830
https://www.interfax.ru/russia/1036089
https://mak-iac.org/rassledovaniya/mi-8t-ra-25660-14-07-2025/
Final Report: https://mak-iac.org/upload/iblock/aff/p73nb7bzv5bd6uv2hygosz1suctrsieo/report_ra-25660.pdf
Location
Images:
Photo: Rosaviatsiya
Media:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Jul-2025 09:34 | SignorPignolini | Added |
| 14-Jul-2025 10:08 | vasilf | Updated [Cn, Departure airport, Destination airport, Source, ] |
| 14-Jul-2025 10:11 | vasilf | Updated [Location, ] |
| 14-Jul-2025 10:30 | vasilf | Updated [Source, Narrative, ] |
| 16-Jul-2025 04:53 | vasilf | Updated [Operator, Source, Damage, Narrative, Category, ] |
| 16-Jul-2025 08:18 | gerard57 | Updated [Total fatalities, Location, Source, Narrative, ] |
| 16-Jul-2025 08:23 | SignorPignolini | Updated [Total fatalities, Source, Narrative, ] |
| 16-Jul-2025 08:35 | gerard57 | Updated [Source, Narrative, ] |
| 16-Jul-2025 09:05 | vasilf | Updated [Operator, Nature, Embed code, ] |
| 16-Jul-2025 10:01 | vasilf | Updated [Location, ] |
| 16-Jul-2025 18:14 | ASN | Updated [Location, Narrative, Photo, ] |
| 16-Jul-2025 18:17 | ASN | Updated [Nature, Source, Narrative, ] |
| 10-Oct-2025 16:16 | Hirurg | Updated [Time, Source, ] |
| 10-Oct-2025 16:25 | ASN | Updated [Narrative, Accident report, ] |
| 10-Oct-2025 16:26 | ASN | Updated [Category, ] |
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