ASN Wikibase Occurrence # 361195
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 5 October 1993 |
| Time: | 10:55 LT |
| Type: |  Hughes 269B |
| Owner/operator: | Private |
| Registration: | N9333F |
| MSN: | 34-0040 |
| Year of manufacture: | 1964 |
| Engine model: | LYCOMING HIO-360-A1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Linville, NC -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER TOOK OFF FROM A PRIVATE GOLF COURSE IN MOUNTAINOUS TERRAIN. THE ELEVATION WAS AT THE UPPER LIMIT OF THE HELICOPTER'S CAPABILITY TO HOVER IN GROUND EFFECT. AFTER DEPARTURE, A CLIMBING TURN WAS MADE TO THE NORTHEAST. ABOUT 300 FEET AT 40-45 MPH, THE TAIL PITCHED UP, ROTOR RPM DECAYED, AND THE HELICOPTER BEGAN LOSING ALTITUDE. THE PILOT REPORTED THAT THE HELICOPTER ROTATED CLOCKWISE ABOUT ITS VERTICAL AXIS. THE WIND WAS FROM THE WEST ABOUT THREE TO SIX KNOTS. AN AUTOROTATION WAS INITIATED. AFTER TURNING 180 DEGREES, TO THE WEST, TREES WERE OVERFLOWN WHICH THE TAIL ROTOR CONTACTED. AFTER TURNING BACK INTO THE WIND, DIRECTIONAL CONTROL WAS REGAINED AND THE HELICOPTER TOUCHED DOWN, HARD, ON THE GOLF COURSE. MANUFACTURER'S PERSONNEL STATED THAT THE CIRCUMSTANCES WERE CONSISTENT WITH PREVIOUS ACCIDENTS THAT INVOLVED A LOSS OF TAIL ROTOR EFFECTIVENESS (LTE). AN OWNER'S MANUAL FOR THE ACFT WAS CONSULTED. NO INFORMATION WAS PROVIDED REGARDING THE CONDITIONS CONDUCIVE TO LTE.
Probable Cause: THE PILOT'S FAILURE TO MAINTAIN AIRSPEED THAT WOULD HAVE AVOIDED A LOSS OF TAIL ROTOR EFFECTIVENESS (LTE), AND HIS IMPROPER COMPENSATION FOR TAILWIND CONDITION. A FACTOR WAS THE LACK OF INFORMATION IN THE PILOT'S OPERATING HANDBOOK REGARDING THE CONDITIONS UNDER WHICH LTE MAY OCCUR.
Accident investigation:
 |
|
Sources:
NTSB ATL94LA002
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 15:50 | 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