# NTSB investigations: Hughes OH-6, UT

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 WPR14GA176](https://openairdocs.org/ntsb/WPR14GA176.md): Hughes OH 6 · Bullfrog, UT · Accident · Serious injuries · Final report · Apr 29, 2014 · N37929 · Substantial damage
  > A loss of engine power while the helicopter was hovering for reasons that could not be determined because postaccident examination of the engine and rotor drive system revealed no evidence of a mechanical malfunction or failure that would have precluded…
- [NTSB SEA94GA203](https://openairdocs.org/ntsb/SEA94GA203.md): Hughes OH-6A · Duchesne, UT · Accident · 1 fatal · Final report · Jul 31, 1994 · N12UT · Destroyed
  > The pilot's improper in-flight planning/decision and failure to maintain sufficient altitude/clearance from the surrounding terrain. Factors related to the accident were: thunderstorms in the area (requiring the pilot to deviate from the desired course), high…

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4470904'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470904&state=UT

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