# NTSB investigations: Allison 250-C30 series, MI

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 CHI08FA141](https://openairdocs.org/ntsb/CHI08FA141.md): Sikorsky S-76A · Grand Rapids, MI · Accident · Serious injuries · Field investigation · Final report · May 29, 2008 · N176SH · Destroyed
  > The pilot's failure to maintain tail rotor obstacle clearance from a tower during takeoff.
- [NTSB CHI05CA156](https://openairdocs.org/ntsb/CHI05CA156.md): Bell 206L-3 · Algonac, MI · Accident · Minor injuries · Data collection · Final report · Jun 24, 2005 · N311JX · Substantial damage
  > The pilot not maintaining helicopter control, the loss of tail rotor effectiveness he encountered, and his not maintaining clearance from objects during the approach. Factor were the low altitude, the transmission lines, and the garage.

## 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" = 'MI' 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 ('03015'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03015&state=MI

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