# NTSB investigations, MI: 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 CHI94LA279](https://openairdocs.org/ntsb/CHI94LA279.md): Hughes TH-55A · Houghton, MI · Accident · No injuries · Limited investigation · Final report · Aug 14, 1994 · N20SD · Substantial damage
  > failure of the pilot to maintain control of the aircraft.
- [NTSB CHI85FA198](https://openairdocs.org/ntsb/CHI85FA198.md): Bell 47G-2 · Burlington, MI · Accident · 1 fatal · Field investigation · Final report · May 16, 1985 · N3755J · Substantial damage
  > The helicopter was departing from a trailer which was sloped 5 degs to the left. During takeoff, the left skid lifted off first and the helicopter drifted to the right. The right skid caught on the trailer guides and the helicopter rolled over to the right.
- [NTSB CHI84LA211](https://openairdocs.org/ntsb/CHI84LA211.md): Bell 47G · Drummond Island, MI · Accident · Serious injuries · Limited investigation · Final report · May 28, 1984 · N10174 · Substantial damage
  > The plt had previously made 2 local flts, during which, he practiced water landings & takeoffs as well as other maneuvers. On the 3rd flt, he made several water takeoffs & landings. Then while on a landing, the helicopter began to roll quickly to the right.…

## 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 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=MI

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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.