# Final NTSB investigations: Hughes 500C

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 LAX00LA109](https://openairdocs.org/ntsb/LAX00LA109.md): Hughes 500C · Pohnpei (Pacific Ocean) · Accident · Minor injuries · Limited investigation · Final report · Feb 18, 2000 · N437DS · Destroyed
  > The pilot reported that he and the observer were planning to conduct tuna spotting operations. This was to be the first flight of the day. After takeoff, about 100 to 150 feet above sea level, the helicopter began an uncommanded right turn, followed by an…
- [NTSB MIA95LA078](https://openairdocs.org/ntsb/MIA95LA078.md): Hughes 500C · Key Largo, FL · Accident · No injuries · Limited investigation · Final report · Feb 20, 1995 · N7172Z · Substantial damage
  > The pilot's misjudgment of altitude and failure to apply collective cushioning pitch during an autorotation resulting in a hard landing. Contributing to the accident was a total loss of engine power due to a loose coupling B-nut on the pneumatic fuel control…
- [NTSB DEN90LA121](https://openairdocs.org/ntsb/DEN90LA121.md): Hughes 369HS · Las Cruces, NM · Accident · Serious injuries · Limited investigation · Final report · Jun 2, 1990 · N436DS · Substantial damage
  > A loss of power for an unknown cause. A factor in the accident was the unsuitable terrain.

## 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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4470805'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470805&status=final

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