ASN Wikibase Occurrence # 200930
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| Date: | Thursday 6 April 2017 |
| Time: | 10:35 |
| Type: |  Bell 206B |
| Owner/operator: | Havasu Heli Flights |
| Registration: | N206SA |
| MSN: | 1013 |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 8482 hours |
| Engine model: | Rolls Royce 250-C20 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | La Verne, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | La Verne, CA (POC) |
| La Verne, CA (POC) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Nov-2017 08:48 | ASN Update Bot | Added |
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