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ASN Wikibase Occurrence # 200930
Last updated: 16 August 2021
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Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell 206B
Owner/operator:Havasu Heli Flights
Registration: N206SA
MSN: 1013
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:La Verne, CA -   United States of America
Phase: Unknown
Departure airport:La Verne, CA (POC)
Destination airport:La Verne, CA (POC)
Investigating agency: NTSB
The flight instructor in the helicopter reported that he was providing hovering autorotation training to a private pilot. The flight instructor reported that he rolled off the throttle to initiate the maneuver, and the private pilot “raised the collective too soon which resulted in the aircraft climbing.” The rotor inertia decayed, and a main rotor blade struck the tailboom after the helicopter struck the ground. The helicopter sustained substantial damage to the tail rotor drive shaft.  
The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Probable Cause: The pilot’s early increased application of the collective during a simulated hovering autorotation, which resulted in a loss of rotor rpm and subsequent main rotor blade strike of the tailboom.



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

Revision history:

05-Nov-2017 08:48 ASN Update Bot Added

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