ASN Wikibase Occurrence # 264951
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| Date: | Sunday 27 June 2021 |
| Time: | 18:19 LT |
| Type: |  Robinson R44 Raven |
| Owner/operator: | Private |
| Registration: | RA-04247 |
| MSN: | 0998 |
| Year of manufacture: | 2001 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Mount Ai-Petri, Crimea -
 Russia
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Heliport Yalta |
| Ai-Petri | |
| Investigating agency: | MAK |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot decided to turn back to the departure helipad after crossing a mountain massif due to increased turbulence at the top of the mountain.
During the U-turn over Ai-Petri plateau , the helicopter impacted terrain.
The most probable cause of the accident with the R-44 RA-04247 helicopter was the unavailability of the PIC to fly the actual weather conditions (moderate turbulence and possible wind gusts). When the pilot-in-command got into these meteorological conditions, most likely, he “squeezed” the throttle-correction stick, which led to the withdrawal of the speed controller (governor) and the loss of speed of the HV. During an emergency landing with a tailwind on rough terrain at an altitude of 1175 m above sea level, the PIC lost control of the aircraft, resulting in a rough landing and damage to the helicopter.
Contributing factors were most likely:
- insufficient preparation of the PIC for the flight in terms of familiarization with meteorological information;
- failure to take into account the provisions of the RLE and notices on flight safety regarding flights in a turbulent atmosphere and landing with a tailwind;
- insufficient skills in landing at altitudes of more than 1000 m.
Accident investigation:
 |
|
Sources:
https://mak-iac.org/rassledovaniya/r44-ra-04247-27-06-2021/#117667
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Jul-2021 16:02 | Hirurg | Added |
| 01-Jul-2021 16:02 | harro | Updated [Total occupants, Other fatalities, Location, Country, Narrative] |
| 01-Jul-2021 16:03 | harro | Updated [Aircraft type, Cn] |
| 01-Jun-2022 10:27 | harro | Updated [Operator, Total occupants, Phase, Nature, Departure airport, Destination airport, Damage, Narrative, Category, Accident report] |
| 02-Jun-2022 07:47 | Aerossurance | Updated [Operator, Country] |
| 27-Jun-2022 14:45 | Hirurg | Updated [Time, Country] |
| 12-Nov-2023 11:13 | harro | Updated [[Time, Country]] |
Corrections or additions? ... Edit this accident description
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