# NTSB investigations: Bell Helicopter Textron 206L-1: Loss of engine power(total) - mech failure/malf NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB LAX98LA140](https://openairdocs.org/ntsb/LAX98LA140.md): Bell 206L-1 · Los Angeles, CA · Accident · No injuries · Limited investigation · Final report · Apr 21, 1998 · N87WC · Substantial damage > An overtemp of the engine during start within 10 hours of the accident, and the failure to report the event to the maintenance facility. - [NTSB ANC90FA117](https://openairdocs.org/ntsb/ANC90FA117.md): Bell 206L-1 · Farewell, AK · Accident · Serious injuries · Field investigation · Final report · Jul 14, 1990 · N300AH · Substantial damage > An internal engine failure due to a thermal fatigue failure of the 1st stage turbine wheel as a result of overtemperature. The high rough/uneven terrain prevented a successful autorotation. - [NTSB FTW90LA096](https://openairdocs.org/ntsb/FTW90LA096.md): Bell 206L-1 · E. Island Blk15 · Accident · Serious injuries · Limited investigation · Final report · Apr 17, 1990 · N1071A · No damage > The loss of continuity in the compressor section of the engine due to a fatique failure of the spur adapter gear shaft. - [NTSB MIA89IA186](https://openairdocs.org/ntsb/MIA89IA186.md): Bell 206L-1 · Chiefland, FL · Incident · No injuries · Incident investigation · Final report · Jul 6, 1989 · N2137U · No damage > Engine failure due to failure of the first stage turbine wheel disk. - [NTSB FTW89LA021](https://openairdocs.org/ntsb/FTW89LA021.md): Bell 206L-1 · Gulf-Of-Mexico (Gulf of Mexico) · Accident · Serious injuries · Limited investigation · Final report · Nov 17, 1988 · N2780W · Substantial damage > Engine failure for undetermined reasons and the pilot misjudging his altitude during the flare resulting in a hard landing. - [NTSB LAX88FA330](https://openairdocs.org/ntsb/LAX88FA330.md): Bell 206L-1 · Santa Barbara, CA · Accident · No injuries · Field investigation · Final report · Sep 29, 1988 · N2246Q · Substantial damage > Failure of the #1 turbine wheel. Contributing to this accident was the unreported over temperature cycles of the engine. Also contributing was the unsuitability of the landing surface from the presence of the 1/4 inch steel sheeting. - [NTSB FTW85FA100](https://openairdocs.org/ntsb/FTW85FA100.md): Bell 206L-1 · Lafayette, LA · Accident · No injuries · Field investigation · Final report · Jan 22, 1985 · N2762X · Substantial damage > The acft departed at 2040 CST as a flt of 2 on a ferry flt. Shortly after level-off at 700 ft and power stabilized at 72% torque the engine failed and the acft yawed left and right. An autoration was initiated into a soft plowed field with a slight… - [NTSB FTW84LA414](https://openairdocs.org/ntsb/FTW84LA414.md): Bell 206L-1 · West Delta 105 · Accident · No injuries · Limited investigation · Final report · Sep 26, 1984 · N5013F · Substantial damage > While in cruise flt, total pwr loss was experienced. Plt setup autorotative water landing, deployed emergency floats. Right float was not fully inflated by water touchdown, acft rolled right to inverted position. Eng teardown revealed carbon buildup between… - [NTSB ANC84LA071](https://openairdocs.org/ntsb/ANC84LA071.md): Bell 206L-1 · Mt Mckinley Vil, AK · Accident · No injuries · Limited investigation · Final report · May 16, 1984 · N1078N · Substantial damage > The helicopter experienced an engine failure while cruising at about 600 ft AGL. The pilot made a forced landing during which the main rotor blades collided with trees. Examination of the aircraft fuel system revealed that the check valves located in the fuel… - [NTSB ANC83FA144](https://openairdocs.org/ntsb/ANC83FA144.md): Bell 206L-1 · Bettles, AK · Accident · No injuries · Field investigation · Final report · Aug 13, 1983 · N1081K · Substantial damage > According to the plt, the low fuel warning light illuminated when the fuel gage was indicating 200 lbs. He reported he could see the arpt lights & elected to continue the flt. After arriving, he terminated his apch to a 30 to 50 ft hover with no forward… - [NTSB NYC82DA206](https://openairdocs.org/ntsb/NYC82DA206.md): Bell 206L-1 · Ho Ho Kus, NJ · Accident · No injuries · Final report · Aug 21, 1982 · N57480 · Substantial damage > While in straight and level flight at 1000 ft, the pilot heard a "pop" in the engine area. He noted that the turbine outlet temperature (tot) began an immediate rise to the high yellow area initially, the power was reduced to 50% torque and the tot returned… - [NTSB FTW82DA201](https://openairdocs.org/ntsb/FTW82DA201.md): Bell 206L-1 · High Island 389 · Accident · No injuries · Final report · May 29, 1982 · N1070D · Destroyed > Pilot approaching landing platform heard a loud bang and autorotated to water. Aircraft rolled inverted and was damaged by waves banging it against platform. A teardown of the engine revealed that the first stage turbine wheel, pn 6895801G, had failed and… ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1182107') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 351)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=1182107&occurrence=351 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.