ASN Wikibase Occurrence # 36055
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| Date: | Saturday 22 July 1995 |
| Time: | 18:37 LT |
| Type: |  Bell 206L-3 LongRanger III |
| Owner/operator: | T O Ranch Co. |
| Registration: | N111JA |
| MSN: | 51274 |
| Year of manufacture: | 1989 |
| Total airframe hrs: | 675 hours |
| Engine model: | ALLISON 250-C30P |
| Fatalities: | Fatalities: 1 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Borger, TX -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Amarillo, TX (KTDW) |
| (NONE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ACCORDING TO THE PILOT, HE NOTICED THUNDERSTORMS 'DEVELOPING RAPIDLY' TO THE LEFT OF HIS FLIGHT PATH; HOWEVER, 'THEY APPEARED TO BE AT A SAFE DISTANCE.' HE FURTHER REPORTED THAT, HE NOTICED DUST PICKING UP ON THE GROUND, ALONG WITH SOME DEBRIS, ABOUT 1/2 MILE AHEAD, AND TO THE LEFT OF HIS FLIGHT PATH. AFTER INITIATING A TURN TO THE RIGHT, AWAY FROM THE STORM AREA, HE 'COULD NOT CONTROL THE HELICOPTER', AND DOES NOT RECALL THE ENSUING GROUND IMPACT. DOPPLER RADAR IMAGES, FOR THE TIME AND AREA OF THE ACCIDENT, SHOW RAPIDLY DEVELOPING WEATHER ECHOES IN THE VICINITY OF THE ACCIDENT SITE. ALSO, BASE VELOCITY DATA, AT THE APPROXIMATE TIME OF THE ACCIDENT, SHOW A SIGNIFICANT THUNDERSTORM OUTFLOW BOUNDARY LOCATED JUST NORTHWEST OF THE ACCIDENT SITE. SEVERAL WITNESSES, IN THE VICINITY OF THE ACCIDENT SITE, REPORTED HIGH WINDS AND TURBULENT CONDITIONS. ALL STRUCTURAL COMPONENTS, TAIL AND MAIN ROTOR DRIVE SYSTEMS, ENGINE COMPONENTS, AND FLIGHT CONTROLS, THAT WERE NOT DESTROYED BY IMPACT FORCES AND POSTIMPACT FIRE, DID NOT REVEAL EVIDENCE OF FAILURE PRIOR TO IMPACT.
Probable Cause: THE PILOT'S LOSS OF CONTROL DUE TO AN ENCOUNTER WITH A DUST DEVIL/WHIRLWIND AND THE TURBULENCE AND HIGH WIND ASSOCIATED WITH THUNDERSTORM OUTFLOW.
Accident investigation:
 |
|
Sources:
NTSB FTW95FA308
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:22 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 13:22 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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