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ASN Wikibase Occurrence # 231942
Last updated: 16 September 2021
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Type:Silhouette image of generic ALO2 model; specific model in this crash may look slightly different
Aérospatiale SE 3130 Alouette II
Registration: N92785
MSN: 1236
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Location:Dell’ Orto air landing strip , Mokelumne Hill, Calaveras County, CA -   United States of America
Phase: Take off
Departure airport:Mokelumne Hills, CA (PVT)
Destination airport:Mokelumne Hills, CA (PVT)
Investigating agency: NTSB
The pilot reported that, after about 20 minutes of flight in the helicopter, he returned to a private runway. The pilot descended the helicopter and began a hover-taxi from one end of the runway to the other. During the hover, the right skid contacted grass adjacent to the runway. The helicopter rolled over on its right ride, which resulted in substantial damage to the main rotor blades. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.


Probable Cause: The pilot's failure to maintain adequate clearance from terrain during a hover-taxi, which resulted in the helicopter's skid contacting grass and a subsequent dynamic roll-over.



FAA register:

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 5 months
Download report: Final report

Revision history:

05-Jan-2020 12:19 Captain Adam Added
05-Jan-2020 15:15 Geno Updated [Time, Location, Source]
06-Jan-2020 17:05 Anon. Updated [Aircraft type, Registration, Cn, Operator, Phase, Source]
06-Jan-2020 17:05 harro Updated [Aircraft type]
06-Jan-2020 18:10 Geno Updated [Total occupants, Source]
01-Jul-2020 07:02 ASN Update Bot Updated [Time, Nature, Departure airport, Destination airport, Source, Damage, Narrative, Accident report, ]

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