# NTSB investigations: Allison 250 SER 250HP, OH

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 ERA25LA027](https://openairdocs.org/ntsb/ERA25LA027.md): Bell Helicopter Textron 206L-1 · Canal Winchester, OH · Accident · No injuries · Class 4 · Limited · Final report · Oct 27, 2024 · N54AE · Substantial damage
  > An in-flight collision with a bird while in cruise flight.
- [NTSB CEN13CA145](https://openairdocs.org/ntsb/CEN13CA145.md): Hughes 369HS · London, OH · Accident · No injuries · Data collection · Final report · Jan 29, 2013 · N193M · Substantial damage
  > The pilot's failure to comply with established cold weather operating procedures, which resulted in a total loss of engine power. Contributing to the accident was the pilot's excessive aft cyclic input during the landing flare, which resulted in main rotor…
- [NTSB IAD00LA002](https://openairdocs.org/ntsb/IAD00LA002.md): Loral GZ-22 · Mogadore, OH · Accident · Minor injuries · Limited investigation · Final report · Oct 28, 1999 · N4A · Substantial damage
  > The failure of the flight control system manufacturer to meet design (hardness) specifications that resulted in stripped splines.

## 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" = 'OH' 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=OH

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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.