# NTSB investigations: Hughes 369HS, 1986

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 MIA87FA046](https://openairdocs.org/ntsb/MIA87FA046.md): Hughes 369HS · Zephyrhills, FL · Accident · 2 fatal · Field investigation · Final report · Dec 9, 1986 · N8390F · Destroyed
  > A witness stated that she heard the eng on the helicopter quit. She looked out her window and watched the helicopter hit the ground, bounce, hit again, flip over and the tail broke off. The helicopter then burst into flames and exploded. Exam of the eng…
- [NTSB ATL86LA251](https://openairdocs.org/ntsb/ATL86LA251.md): Hughes 369HS/H-500 · Waterloo, AL · Accident · No injuries · Limited investigation · Final report · Sep 7, 1986 · N9181F · Substantial damage
  > The acft lifted off the top of the support truck and started a takeoff with a partial load of chemicals to be applied to a logged over forest area. About 10-15 feet after lift off the plt detected a loss of rotor RPM. He was at the edge of a ravine with steep…
- [NTSB CHI86LA219](https://openairdocs.org/ntsb/CHI86LA219.md): Hughes 500 (369HS) · West Lafayette, IN · Accident · Minor injuries · Limited investigation · Final report · Sep 6, 1986 · N2254X · Destroyed
  > The helicopter was at a low altitude hover video taping an athletic event when the aft flex coupling on the tail rotor failed. The plt was unable to regain control and during descent the main rotor blades struck the roof of a residence. The helicopter then…
- [NTSB SEA86FA056](https://openairdocs.org/ntsb/SEA86FA056.md): McDonnell Douglas 369D · Cougar, WA · Accident · 3 fatal · Field investigation · Final report · Feb 11, 1986 · N609PD · Destroyed
  > The helicopter departed the landing area after a night photography session across the valley floor from the Mt. St. Helens volcano. Prior to departure the plt reported the weather was closing in and getting 'nasty'. Wx conditions as reported prior to…

## 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 year(c."eventDate") = 1986
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4470728'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470728&year=1986

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