# NTSB investigations: Allison 250 SER 250HP, TX

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 CEN24FA049](https://openairdocs.org/ntsb/CEN24FA049.md): MD Helicopters 600 · Sterling City, TX · Accident · 2 fatal · Class 3 · Field · Final report · Nov 29, 2023 · N745MB · Substantial damage
  > The pilot’s failure to maintain clearance from a power line pole’s static arm during forecasted gusting wind conditions, un-forecasted light turbulence, and un-forecasted low-level wind shear conditions, resulting in main rotor blade contact with the static…
- [NTSB CEN21LA139](https://openairdocs.org/ntsb/CEN21LA139.md): Hughes 369 · Kaufman, TX · Accident · No injuries · Class 4 · Limited · Final report · Feb 26, 2021 · N58431 · Substantial damage
  > The pilot’s failure to maintain clearance from a power line during low-level maneuvering.
- [NTSB CEN20LA328](https://openairdocs.org/ntsb/CEN20LA328.md): Bell 206 · Marathon, TX · Accident · 3 fatal · Class 3 · Limited · Final report · Aug 8, 2020 · N284S · Destroyed
  > The in-flight loss of helicopter control for reasons that could not be determined based on the available evidence.
- [NTSB CEN12LA258](https://openairdocs.org/ntsb/CEN12LA258.md): Bell 206B · Amarillo, TX · Accident · Minor injuries · Limited investigation · Final report · Apr 26, 2012 · N2068X · Substantial damage
  > The pilot's failure to maintain helicopter control during landing in gusty wind conditions associated with a thunderstorm, which resulted in a loss of tail rotor effectiveness.
- [NTSB CEN11LA646](https://openairdocs.org/ntsb/CEN11LA646.md): Bell 206B · Spicewood, TX · Accident · No injuries · Limited investigation · Final report · Sep 15, 2011 · N3181J · Substantial damage
  > The pilot did not maintain adequate rotor rpm during a low-altitude maneuvering flight.
- [NTSB DFW08IA002](https://openairdocs.org/ntsb/DFW08IA002.md): Bell Helicopter Textron 206L-1 · Galveston, TX · Incident · No injuries · Incident investigation · Final report · Oct 6, 2007 · N3899C · Minor damage
  > The loss of tail rotor control during initial takeoff climb due to the fracture of a tail rotor blade as result of impact with a foreign object.
- [NTSB DFW07LA111](https://openairdocs.org/ntsb/DFW07LA111.md): Bell 206B · Horseshoe Bay, TX · Accident · Minor injuries · Limited investigation · Final report · May 13, 2007 · N905WP · Substantial damage
  > The pilot's loss of control as result of dynamic rollover while attempting to takeoff. Facrots were the landing skid becoming snagged and the soft terrain.
- [NTSB FTW98LA260](https://openairdocs.org/ntsb/FTW98LA260.md): Bell 206B · Corpus Christi, TX · Accident · No injuries · Limited investigation · Final report · Jun 7, 1998 · N16814 · Substantial damage
  > The failure of the tail rotor drive shaft due to the separation of a bolt at one of the drive shaft disc couplings for an undetermined reason, which resulted in the pilot's inability to maintain directional control during landing.
- [NTSB FTW93LA228](https://openairdocs.org/ntsb/FTW93LA228.md): Bell 206B · Pearland, TX · Accident · No injuries · Limited investigation · Final report · Aug 4, 1993 · N16814 · Substantial damage
  > Pilot's failure to maintain proper rotor RPM, the delayed flare, and improper touchdown. Factors were total failure of the power turbine due to oil starvation to the #8 bearing assembly.
- [NTSB FTW90LA083](https://openairdocs.org/ntsb/FTW90LA083.md): Bell 206B · Pearland, TX · Accident · Serious injuries · Limited investigation · Final report · Mar 19, 1990 · N5016F · Substantial damage
  > Dynamic rollover resultant from improper takeoff techniques used by the rated pilot, and inadequate supervision by the company check pilot.
- [NTSB FTW89FA133](https://openairdocs.org/ntsb/FTW89FA133.md): Aerospatiale AS-350-D · Galveston, TX · Accident · 2 fatal · Field investigation · Final report · Jul 11, 1989 · N3595B · 2 aircraft · Destroyed
  > Failure of both pilots to see-and-avoid the other aircraft (inadequate visual lookout).
- [NTSB FTW85FA287](https://openairdocs.org/ntsb/FTW85FA287.md): Bell 206L-1 · Saginaw, TX · Accident · Serious injuries · Field investigation · Final report · Jul 15, 1985 · N32GT · Destroyed
  > The helicopter had landed in the road to pick up an injured auto accident patient. The plt made an aerial check prior to landing to the west in a calm wind condition. The patient was loaded in a secure stretcher and all was ready for liftoff. The plt stated…
- [NTSB FTW83FA066](https://openairdocs.org/ntsb/FTW83FA066.md): Bell 206B · San Antonio, TX · Accident · 3 fatal · Field investigation · Final report · Dec 23, 1982 · N206H · Destroyed
  > The acft departed brackettville at 0715 & at 0740 contacted uvalde UNICOM for their wx. When informed that uvalde was "zero-zero" the flt continued east. The acft was later observed & heard flying above the low indefinite ceiling shortly before impacting the…
- [NTSB FTW82FA204](https://openairdocs.org/ntsb/FTW82FA204.md): Bell 206B · Fairfield, TX · Accident · 2 fatal · Field investigation · Final report · May 31, 1982 · N1482W · Destroyed
  > Witnesses observed the helicopter flying northbound while traveling parallel and just east of a north-south highway. Reportedly, it enter an autorotative landing approach, crossed over the highway and impacted in an open field on a westerly heading after…
- [NTSB FTW82DA013](https://openairdocs.org/ntsb/FTW82DA013.md): Bell 206L-1 · Sabine, TX · Accident · Minor injuries · Closed · Oct 19, 1981 · N1076S · Substantial damage
- [NTSB FTW81FA131](https://openairdocs.org/ntsb/FTW81FA131.md): Bell 206L-1 · Mesquite, TX · Accident · Minor injuries · Closed · Aug 15, 1981 · N3887W · Substantial damage
- [NTSB FTW68A0079](https://openairdocs.org/ntsb/FTW68A0079.md): Bell 206A · Saginaw, TX · Accident · 1 fatal · Closed · Mar 13, 1968 · N6270N · Substantial damage

## 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."eventStateOrRegion" = 'TX' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03002', '03003'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03002&state=TX

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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.