ASN Wikibase Occurrence # 352659
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Thursday 9 September 1999 |
| Time: | 11:30 LT |
| Type: |  Robinson R-22 BETA |
| Owner/operator: | Private |
| Registration: | N4076Z |
| MSN: | 1919 |
| Year of manufacture: | 1991 |
| Total airframe hrs: | 2795 hours |
| Engine model: | Lycoming O-320-B2C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Piute, NV -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | (KVGT) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Two flight instructors were practicing autorotations. The last planned autorotation began at 600 feet above ground level (agl) and 70 knots. Turning into the landing area, the pilot was maintaining rotor rpm in the green arc and the airspeed at 60 knots. As he was about to roll onto final, he heard the low rotor rpm horn and saw the rpm drop to 85 percent. As he lowered the collective, he noted he was still descending rapidly and he did not see the rpm increase substantially. He attempted a power recovery and the other pilot tried to help roll on the throttle and lower the collective. At 100 feet with full throttle and the collective lowered, the pilot recognized he would touch down and attempted to flare and lower the descent rate. The rpm remained below 80 percent and the airspeed slowed to 40 knots. He raised the collective to cushion the landing and touched down an estimated 200 feet from his intended landing spot. The helicopter landed hard and rolled over onto its right side.
Probable Cause: the failure of the pilot to maintain rotor rpm while practicing autorotations, resulting in a hard landing and roll over.
Accident investigation:
 |
|
Sources:
NTSB LAX99LA300
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 08-Mar-2024 12:52 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation