ASN Wikibase Occurrence # 179881
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| Date: | Friday 25 September 2015 |
| Time: | 10:40 |
| Type: |  Hughes 269B |
| Owner/operator: | Private |
| Registration: | N9567F |
| MSN: | 210459 |
| Year of manufacture: | 1972 |
| Total airframe hrs: | 4763 hours |
| Engine model: | Lycoming HIO-360-A1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | East Eustis, Lake County, Florida -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Leesburg, FL (LEE) |
| Eustis, FL | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial pilot was flying the helicopter about 600 ft above ground level and at a speed of 60 to 70 mph and began descending and slowing the helicopter as it approached a friend's home, where he planned to land. The right-seat passenger, who was a student pilot, reported that the helicopter got "low and slow" during the approach and began "violently spinning to the right." The student pilot also reported that the wind was light and variable and that there were no mechanical malfunctions or failures during the flight. Postaccident examination of the wreckage revealed no evidence of a mechanical malfunction or anomaly.
A cell phone video provided by a witness confirmed the student's report that the helicopter was at a low altitude and airspeed when it yawed right, then spun right, and descended to ground impact. The engine could be heard running throughout the accident sequence.
It is likely that, during the landing approach, the helicopter's airspeed dropped below effective translational lift, and when the pilot added power to compensate, the helicopter yawed right. The pilot was unable to stop the yaw and lost control of the helicopter due to a loss of tail rotor effectiveness.
Probable Cause: The pilot's failure to maintain yaw control as he slowed the helicopter during a landing approach, which resulted in a loss of helicopter control due to a loss of tail rotor effectiveness.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=9567F
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Sep-2015 17:37 | gerard57 | Added |
| 25-Sep-2015 22:06 | Geno | Updated [Time, Aircraft type, Registration, Cn, Location, Nature, Departure airport, Source, Damage, Narrative] |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 01-Dec-2017 15:25 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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