ASN Wikibase Occurrence # 385509
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: | Tuesday 31 July 2001 |
| Time: | 11:46 LT |
| Type: | Air & Space 18 |
| Owner/operator: | Private |
| Registration: | N6121S |
| MSN: | 1827 |
| Total airframe hrs: | 2739 hours |
| Engine model: | Lycoming O-360-A1D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Blairstown, NJ -
 United States of America
|
| Phase: | Standing |
| Nature: | Private |
| Departure airport: | Blairstown, NJ (1N7) |
| (1N7) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot of the gyroplane taxied into position, and held on the end of the runway. She then engaged the main rotor system and advanced the throttle. She brought the main rotor up to 120 rpm in flat pitch, and then advanced the throttle and changed the pitch on the main rotor blades from ground to flight, after which, the gyroplane entered ground resonance. The pilot reported that she changed the pitch of the main rotor system from flight, back to ground and closed the throttle. Witnesses reported the gyroplane bounced and rocked from side to side, and came to rest on its side. The main rotor system separated from the rotor mast. A two piece friction fit sleeve for main rotor pitch control had separated. There was no evidence of recent wear on the threads in front of the nuts that held the sleeve together. The hydraulic blade dampers had separated from the main rotor blades and were not recovered. The gyroplane had been operated 0.7 hours since the last annual inspection, which had been conducted by the pilot. In addition, she declined to be interviewed by the Safety Board about the accident, and did not report any flight experience in make and model. However she was rated in both airplanes and rotorcraft, and also held flight instructor ratings in those models.
Probable Cause: An encounter with ground resonance for undetermined reasons.
Accident investigation:
 |
|
Sources:
NTSB NYC01LA196
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Apr-2024 19:26 | 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