# NTSB investigations: Allison 250 SER 250HP, MT

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 WPR19LA194](https://openairdocs.org/ntsb/WPR19LA194.md): Bell 47G 3B 1 · Mosby, MT · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 13, 2019 · N3078G · Substantial damage
  > The pilot’s failure to account for environmental conditions conducive to a loss of tail rotor effectiveness, which resulted in a loss of tail rotor effectiveness and subsequent loss of control. Contributing to the accident was the pilot’s inappropriate…
- [NTSB WPR10CA100](https://openairdocs.org/ntsb/WPR10CA100.md): Bell 206B · Kalispell, MT · Accident · No injuries · Data collection · Final report · Jan 7, 2010 · N127TP · Substantial damage
  > The pilot's failure to maintain lateral drift control during landing.
- [NTSB DEN83LA022](https://openairdocs.org/ntsb/DEN83LA022.md): Bell 206B · Near Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Nov 21, 1982 · N5011G · Substantial damage
  > Acft departed hospital at missoula in good wx to assist highway accident victim 5 mi east of clinton. Victim was placed aboard helicopter on stretcher for emergency flight to hospital. About 5-6 mi east of missoula plt noticed light snow falling & observed a…
- [NTSB DEN81FTA04](https://openairdocs.org/ntsb/DEN81FTA04.md): Bell 206B · Columbus, MT · Accident · Minor injuries · Closed · Jan 28, 1981 · N8533K · Substantial damage
- [NTSB SEA79FTI19](https://openairdocs.org/ntsb/SEA79FTI19.md): Bell 47G3B1 · Emigrant, MT · Accident · No injuries · Closed · Jun 25, 1979 · N3078G · Substantial damage
- [NTSB SEA73FTI01](https://openairdocs.org/ntsb/SEA73FTI01.md): Bell 206A · Paradise, MT · Accident · Minor injuries · Closed · Jul 8, 1972 · N6273N · 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" = 'MT' 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=MT

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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.