ASN Wikibase Occurrence # 186811
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: | Monday 2 March 1992 |
| Time: | 12:29 LT |
| Type: |  Bell 206B Jet Ranger III |
| Owner/operator: | Smith Helicopter, Inc. |
| Registration: | N59613 |
| MSN: | 1502 |
| Year of manufacture: | 1974 |
| Total airframe hrs: | 7356 hours |
| Engine model: | ALLISON 250C20B |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Lake Tahoe, near Glenbrook, Douglas County, Nevada -
 United States of America
|
| Phase: | Taxi |
| Nature: | Survey |
| Departure airport: | Tahoe City, CA |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER BEGAN AN UNCOMMANDED RIGHT TURN WHILE FLYING OUT OF GROUND EFFECT AT ABOUT 20 KNOTS FORWARD AIRSPEED WITH A DENSITY ALTITUDE OF 6,875 FT. THE PILOT REPORTED THE WINDS TO BE FROM THE HELICOPTER'S THE RIGHT FRONT WHEN IT STARTED THE UNCOMMANDED RIGHT TURN. THE PILOT ATTEMPTED TO ARREST THE RIGHT TURN BUT WITHOUT SUCCESS. THE HELICOPTER DESCENDED UNCONTROLLED UNTIL IT CRASHED INTO THE LAKE. THERE WERE NO REPORTS OF ANY PREEXISTING MECHANICAL FAILURES OR MALFUNCTIONS THAT MAY HAVE CONTRIBUTED TO THE LOSS OF CONTROL. THE PILOTS OPERATING HANDBOOK (POH) WARNS PILOTS TO EXERCISE CAUTION WHEN OPERATING AT LOW AIRSPEEDS AT HIGH ALTITUDES. THE POH INDICATES THAT TAILROTOR CONTROL MAY BE MARGINAL WHEN THE RELATIVE WIND IS IN THE CRITICAL WIND AZIMUTH AREA WHICH BEGINS AT THE RIGHT FRONT OF THE HELICOPTER. THE PILOT FAILED TO EVALUATE THE HELICOPTER'S PERFORMANCE DATA BEFORE DEPARTING.
Probable Cause: FAILURE OF THE PILOT-IN-COMMAND TO FOLLOW THE HELICOPTER'S PERFORMANCE DATA WHILE TRANSLATING OUT OF TRANSLATIONAL LIFT TO AND OUT OF GROUND EFFECT.
Accident investigation:
 |
|
Sources:
NTSB LAX92LA134
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=59613
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Apr-2016 18:05 | Dr.John Smith | Added |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 11-Apr-2024 08:43 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Departure airport, Source, Narrative, Category, Accident report] |
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