ASN Wikibase Occurrence # 39427
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| Date: | Friday 26 February 1982 |
| Time: | 08:00 |
| Type: |  Robinson R22 |
| Owner/operator: | Tejas Helicopters Of Austin |
| Registration: | N9061Z |
| MSN: | 145 |
| Total airframe hrs: | 119 hours |
| Engine model: | LYCOMING O-320-A2C |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | San Marcos, Texas -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Bird's Nest Airport (FAA: 6R4) Austin, Texas |
| San Antonio, Texas (SAT/KSAT) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER WAS OBSERVED ROTATING IN A COUNTER CLOCKWISE MOTION. A SMALL EXPLOSION WAS SEEN AT THE TAIL SECTION WITH PIECES FLYING OFF. THE OUTBOARD SECTIONS OF THE TAIL ROTOR BLADES WERE FOUND ABOUT 800 FEET FROM THE MAIN WRECKAGE. EXAMINATION OF THE FRACTURES INDICATES A HIGHLY ABNORMAL STRESS CONDITION WAS PRODUCED IN THE TAIL ROTOR. THE AUSTIN FSS WAS REPORTING WIND GUSTS OF 27 KNOTS.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
ROTOR SYSTEM,TAIL ROTOR BLADE..OVERLOAD
ROTOR SYSTEM,TAIL ROTOR BLADE..FAILURE,TOTAL
ROTOR SYSTEM,TAIL ROTOR BLADE..UNDETERMINED
ROTOR DRIVE SYSTEM,TAIL ROTOR GEARBOX(90 DEG)..OVERLOAD
ROTOR DRIVE SYSTEM,TAIL ROTOR GEARBOX(90 DEG)..FAILURE,TOTAL
ROTOR DRIVE SYSTEM,TAIL ROTOR GEARBOX(90 DEG)..UNDETERMINED
Contributing Factors:
WEATHER CONDITION..GUSTS
Sources:
1. NTSB Identification: FTW82FA071 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20020917X02098&key=1
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=9061Z
3. http://www.griffin-helicopters.co.uk/accidentdetails.aspx?accidentkey=1267
4. http://planecrashmap.com/plane/tx/N9061Z/
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 16-Sep-2016 18:35 | Dr.John Smith | Updated [Time, Location, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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