# NTSB investigations: Bell Helicopter Textron 206L-1: Airframe/component/system failure/malfunction

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 NYC01LA088](https://openairdocs.org/ntsb/NYC01LA088.md): Bell 206 L-1 · Seneca Falls, NY · Accident · Serious injuries · Limited investigation · Final report · Mar 23, 2001 · N2138Y · Substantial damage
  > the loss of a bolt in a Thomas coupling on the tail rotor drive shaft, for undetermined reasons, during climb, while operating over unsuitable terrain.
- [NTSB DEN01LA012](https://openairdocs.org/ntsb/DEN01LA012.md): Bell 206L-1 · Mesa Verde, CO · Accident · No injuries · Limited investigation · Final report · Oct 30, 2000 · N613 · Substantial damage
  > The manufacturer's use of improper materials, and inadequate quality control of the tail rotor blades during the manufacturing process, which resulted in fatigue failure of the blade.
- [NTSB NYC96GA083](https://openairdocs.org/ntsb/NYC96GA083.md): Bell 206L-1 · Charleston, WV · Accident · 2 fatal · Final report · Apr 4, 1996 · N79SP · Destroyed
  > the helicopter manufacturer's inadequate maintenance service bulletin inspection interval which failed to provide timely detection of preexisting fatigue cracks in the tail boom. Factors were: the manufacturer's failure to develop a modification of the failed…
- [NTSB NYC95LA142](https://openairdocs.org/ntsb/NYC95LA142.md): Bell 206-BIII · New York, NY · Accident · No injuries · Limited investigation · Final report · Jul 6, 1995 · N206GS · Substantial damage
  > The pilot' inadequate preflight inspection. A factor was the pilot's diverted attention.
- [NTSB MIA92LA005](https://openairdocs.org/ntsb/MIA92LA005.md): Bell 206-L-1 · Hollywood, FL · Accident · No injuries · Limited investigation · Final report · Oct 6, 1991 · N78CF · Substantial damage
  > The failure of the pilot to maintain rotor RPM and the failure of the CFI to monitor the controls.
- [NTSB FTW91LA023](https://openairdocs.org/ntsb/FTW91LA023.md): Bell 206L-1 · W.Cameron 266 · Accident · No injuries · Limited investigation · Final report · Dec 9, 1990 · N5753B · Destroyed
  > Failure of the helicopter's aft landing gear crosstube assembly due to fatigue.
- [NTSB FTW89LA039](https://openairdocs.org/ntsb/FTW89LA039.md): Bell 206L-1 · S. Timbalier 75 (Gulf of Mexico) · Accident · Minor injuries · Limited investigation · Final report · Jan 9, 1989 · N27555 · Destroyed
  > The loss of control of the helicopter due to an undetermined failure of the tail rotor control system.
- [NTSB NYC88FA166](https://openairdocs.org/ntsb/NYC88FA166.md): Bell 206L-1 · Springtown, PA · Accident · 2 fatal · Field investigation · Final report · Jun 17, 1988 · N114FH · Destroyed
  > While in cruise flight, ground witnesses observed the helicopter make two violent roll maneuvers followed by an in-flight breakup. Aircraft wreckage was spread over an area of approximately 10 acres. Examination of the wreckage revealed that the collective…
- [NTSB FTW87LA195](https://openairdocs.org/ntsb/FTW87LA195.md): Bell 206L-1 · New Iberia, LA · Accident · No injuries · Limited investigation · Final report · Aug 12, 1987 · N2764F · Substantial damage
  > Crew performing practice touchdown autorotations during a trng flt. On 4th autorotation, acft touched down with excess grnd speed and skidded for approx 75' on the wet, soft grass. When crew applied power back to flight RPM they heard a grinding sound and…
- [NTSB FTW85LA295](https://openairdocs.org/ntsb/FTW85LA295.md): Bell 206L-1 · South Marsh · Accident · Minor injuries · Limited investigation · Final report · Jul 21, 1985 · N5753D · Destroyed
  > The plt was initiating a takeoff from a hover off an offshore oil rig. As he lowered the nose for takeoff, he heard a loud noise emit from the tailboom area & the acft began rotating to the right. The plt continued to apply pwr and autorotated to the water.…
- [NTSB FTW82DA144](https://openairdocs.org/ntsb/FTW82DA144.md): Bell 206L-1 · Cameron, LA · Accident · No injuries · Final report · Apr 22, 1982 · N2138Y · Substantial damage
  > N2138Y departed Cameron, LA after refueling en route to an offshore rig. Shortly after departure, while over water, the aircraft began to yaw and vibrate severely. The pilot stated that the tail rotor pedals "kicked" hard when additional power was applied.…

## 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" = 130))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1182107&occurrence=130

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