# NTSB investigations, UT: 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 WPR23LA009](https://openairdocs.org/ntsb/WPR23LA009.md): Bell Helicopter Textron Canada 505 · Moab, UT · Accident · Serious injuries · Class 4 · Limited · Final report · Oct 8, 2022 · N874BB · Substantial damage
  > The pilot’s loss of helicopter control during landing, that resulted in a dynamic roll over.
- [NTSB WPR22LA157](https://openairdocs.org/ntsb/WPR22LA157.md): Robinson Helicopter R44 II · Salt Lake City, UT · Accident · No injuries · Class 4 · Limited · Final report · Apr 16, 2022 · N3297Q · Substantial damage
  > The student pilot’s failure to maintain lateral control and terrain clearance while hovering, and the flight instructor’s delayed remedial action which resulted in a dynamic rollover.
- [NTSB WPR14CA373](https://openairdocs.org/ntsb/WPR14CA373.md): Bell 407 · Moab, UT · Accident · Minor injuries · Data collection · Final report · Sep 11, 2014 · N142MA · Substantial damage
  > The pilot's failure to ensure adequate clearance from terrain while landing on sloped terrain.
- [NTSB WPR14LA113](https://openairdocs.org/ntsb/WPR14LA113.md): Bell 206 · Bountiful, UT · Accident · No injuries · Limited investigation · Final report · Feb 5, 2014 · N3211N · Substantial damage
  > The pilots' inaccurate assessment of the snow depth on the landing zone, which resulted in a landing on snow deeper than that for which the helicopter was equipped and led to dynamic rollover.

## 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" = 'UT' 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=UT

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