# NTSB investigations, MN: Roll over

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 CHI96LA151](https://openairdocs.org/ntsb/CHI96LA151.md): Hiller UH-12E · Big Lake, MN · Accident · Minor injuries · Limited investigation · Final report · May 4, 1996 · N177HA · Substantial damage
  > the pilot's inadequate preflight of the helicopter by not having removed a tiedown strap before attempting takeoff.
- [NTSB CHI85LA254](https://openairdocs.org/ntsb/CHI85LA254.md): Bell 47G-4 · Lakeville, MN · Accident · No injuries · Limited investigation · Final report · Jun 26, 1985 · N3094G · Substantial damage
  > The acft was being landed on a trailer for transportation. Upon touchdown the right skid hooked on the landing guides and the helicopter rolled to the right side. The main rotor blades struck the ground, the left fuel tank ruptured and an explosion and fire…

## 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" = 'MN' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 380)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=380&state=MN

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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.