ASN Wikibase Occurrence # 243930
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| Date: | Sunday 18 October 2020 |
| Time: | 14:00 LT |
| Type: |  Robinson R44 Raven II |
| Owner/operator: | Midwestern Helicopter, LLC |
| Registration: | N31136 |
| MSN: | 14388 |
| Year of manufacture: | 2020 |
| Total airframe hrs: | 70 hours |
| Engine model: | Lycoming Engines HIO-540 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Washington Island Airport (2P2), WI -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Washington, WI |
| Ephraim, WI (3D2) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that while moving over a slight incline at a hover in preparation for the takeoff, a gust of wind caused the helicopter to weathervane, inadvertently contact the ground, and initiate a rolling motion. Although the proper response was to lower the collective in this situation, the pilot's immediate reaction was to increase the collective, which exacerbated the dynamic rollover sequence. The helicopter continued the rolling motion and came to rest on its right side. The helicopter sustained substantial damage to the main rotor system, the fuselage, and the tail rotor system. The pilot reported there were no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation.
Probable Cause: The pilot's failure to maintain lateral control during a hover and improper recovery action after the helicopter contacted the ground, which resulted in a dynamic rollover sequence and an impact with terrain.
Accident investigation:
 |
|
Sources:
NTSB CEN21LA021
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=31136
https://flightaware.com/live/flight/N31136/history/20201018/1652Z/3D2/2P2
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 18-Oct-2020 21:56 | Captain Adam | Added |
| 20-Oct-2020 05:32 | RobertMB | Updated [Time, Aircraft type, Registration, Cn, Operator, Nature, Departure airport, Source, Narrative] |
| 07-Jul-2022 18:23 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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