# NTSB investigations: Hughes Helicopters HUGHES 369D, CO

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 CEN17LA314](https://openairdocs.org/ntsb/CEN17LA314.md): Hughes 369D · Villa Grove, CO · Accident · Serious injuries · Limited investigation · Final report · Aug 10, 2017 · N58424 · Substantial damage
  > The pilot’s failure to maintain main rotor clearance from a power line tower during low-level maneuvering.
- [NTSB CEN11GA218](https://openairdocs.org/ntsb/CEN11GA218.md): Hughes 369D · Meeker, CO · Accident · Minor injuries · Final report · Mar 8, 2011 · N131AL · Substantial damage
  > Main rotor contact with the tail boom resulting in tail boom separation.
- [NTSB DEN01TA019](https://openairdocs.org/ntsb/DEN01TA019.md): Hughes 369D · Montrose, CO · Accident · No injuries · Final report · Dec 6, 2000 · N411SM · Destroyed
  > the foreign object damage to a main rotor blade, while maneuvering.
- [NTSB DEN84FA142](https://openairdocs.org/ntsb/DEN84FA142.md): Hughes 369D · Meeker, CO · Accident · Serious injuries · Field investigation · Final report · May 2, 1984 · N1090A · Substantial damage
  > During slow (35-40 KTS) cruise flt at about 50 ft AGL in mountainous terrain for wildlife survey, pwr loss occurred. Auto systems briefly restored pwr, followed by a ttl loss. Plt executed emergency autorotation into trees on sloping terrain. Investigation…
- [NTSB DEN80FTE04](https://openairdocs.org/ntsb/DEN80FTE04-128570.md): Hughes 369D · Alma, CO · Accident · No injuries · Closed · Oct 27, 1980 · N58216 · Substantial damage
- [NTSB DEN79FTE19](https://openairdocs.org/ntsb/DEN79FTE19.md): Hughes 500D · Marble, CO · Accident · No injuries · Closed · Jan 21, 1979 · N8306F · Substantial damage

## 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" = 'CO' 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 ('4470706'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470706&state=CO

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