ASN Wikibase Occurrence # 265168
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| Date: | Tuesday 6 July 2021 |
| Time: | |
| Type: |  Robinson R44 Raven I |
| Owner/operator: | Private |
| Registration: | SP-CCC |
| MSN: | 2557 |
| Year of manufacture: | 2018 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Lake Tałty, Mikołajki, Mazuria -
 Poland
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Mikołajki |
| EPUL | |
| Investigating agency: | SCAAI |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot of the Robinson R44 Raven I helicopter, SP-CCC, took off from a private property in Mikołajki to perform a recreational flight to the EPUL airfield in Ułęż.
The pilot was holder of PPL(H) and there were two passengers on-board.
The temperature in the helicopter cabin was very high. Shortly after take-off, during acceleration and altitude gain, the pilot wanted to pull the cabin air knob, but by mistake he pulled the mixture control knob, which leaned the mixture and, as a result, the engine shutdown. The pilot immediately realized what had happened and pushed the knob back immediately, but it was too late.
The main rotor RPM began to drop sharply. Light and sound signals alerted the pilot of that fact. The pilot moved the collective downward to switch to auto-rotation flight.
During the descent, the helicopter was controllable. Due to the low speed and height (about 40 m AGL), it was not possible to return to the operational RPM of the main rotor.
Just above the water surface, the pilot increased the collective angle of attack of the main rotor blades by raising the collective. Due to too low RPM of the main rotor, he did not manage to fully stop the descent and the helicopter ditched hard in the Tałty lake in Mikołajki.
As a result of the collision with water, the pilot lost consciousness, which he regained after choking on water, and then instinctively surfaced. At that time, one of the passengers has already surfaced, and the other one joined her after a while. A private motor boat approached them and they were all taken on-board. A few minutes later, PSP and Police boats arrived and the survivors received first aid.
The pilot and passengers were seriously injured and were taken to hospitals. The helicopter was destroyed and its wreckage came to rest at a depth of over a dozen meters under water.
Cause of the accident
Pilot error, resulting in the engine shutdown after take-off.
Contributing factors:
1) High ambient temperature as well as inside the cabin.
2) Pilot’s habits acquired on different helicopter model.
3) Time pressure caused by limited availability of airspace.
4) Lack of conditions to perform full autorotation (low helicopter height and speed).
Accident investigation:
 |
|
Sources:
https://abcnews.go.com/International/wireStory/pulled-lake-poland-helicopter-crash-78684265
https://www.se.pl/olsztyn/mikolajki-smiglowiec-spadl-do-jeziora-talty-trzy-osoby-wyciagnieto-z-wody-aa-2Ds5-7S5V-TpHv.html
https://www.olsztyn.com.pl/artykul,helikopter-spadl-do-jeziora-w-mikolajkach,32744.html
https://www.facebook.com/103470137959237/posts/359546402351608/?d=n
https://cdn.jetphotos.com/full/5/87906_1621713415.jpg (photo)
Media:
#Mikołajki https://t.co/w70UBIwSfD
— Olsztyn.com.pl (@olsztyncompl) July 6, 2021
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 06-Jul-2021 09:35 | gerard57 | Added |
| 06-Jul-2021 10:08 | Aerossurance | Updated [Location, Source, Embed code, Narrative] |
| 06-Jul-2021 12:50 | RobertMB | Updated [Time, Aircraft type, Nature, Source, Embed code, Narrative] |
| 06-Jul-2021 17:26 | harro | Updated [Category] |
| 07-Jul-2021 06:27 | Anon. | Updated [Aircraft type, Registration, Source, Embed code] |
| 07-Jul-2021 06:28 | harro | Updated [Aircraft type, Cn] |
| 07-Jul-2021 10:35 | RobertMB | Updated [Aircraft type, Source, Narrative] |
| 12-Jul-2021 15:53 | hexatus | Updated [Embed code] |
| 11-Sep-2022 12:22 | harro | Updated [Phase, Nature, Departure airport, Destination airport, Narrative, Accident report] |
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