# NTSB investigations, NJ: Dynamic rollover

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 GAA18CA483](https://openairdocs.org/ntsb/GAA18CA483.md): Robinson R22 · Ocean City, NJ · Accident · No injuries · Data collection · Final report · Aug 10, 2018 · N92TR · Substantial damage
  > The flight instructor's decision to conduct hover practice at a lower altitude than recommended and his delayed remedial action during recovery from an unstable hover, which resulted in a dynamic rollover.
- [NTSB ERA17CA187](https://openairdocs.org/ntsb/ERA17CA187.md): Robinson R22 · Linden, NJ · Accident · No injuries · Data collection · Final report · May 20, 2017 · N2322Z · Substantial damage
  > The flight instructor's failure to maintain helicopter control while hovering, which resulted in skid contact with the ground and a dynamic roll-over.
- [NTSB ERA16LA104](https://openairdocs.org/ntsb/ERA16LA104.md): Bell 206 · Linden, NJ · Accident · Serious injuries · Limited investigation · Final report · Feb 6, 2016 · N206R · Substantial damage
  > The pilot receiving instruction's failure to maintain helicopter control during the initial takeoff, which resulted in a dynamic rollover. Contributing to the accident was the flight instructor's inadequate remedial action due to his distraction by looking…

## 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" = 'NJ' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '231' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/231/sequence?state=NJ

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