# NTSB investigations: Hughes 369HS, FL

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 MIA94LA165](https://openairdocs.org/ntsb/MIA94LA165.md): Hughes 369HS · Sarasota, FL · Accident · Serious injuries · Limited investigation · Final report · Jun 22, 1994 · N520TC · Substantial damage
  > Altitude misjudged by the pilot.
- [NTSB MIA93LA143](https://openairdocs.org/ntsb/MIA93LA143.md): Hughes 369HS · Orlando, FL · Accident · Minor injuries · Limited investigation · Final report · Jun 15, 1993 · N500RT · Substantial damage
  > Unsuitable terrain encountered during the autorotative forced landing. Contributing to the accident was total loss of engine power due to seizure of the compressor impeller following failure of the no.2 bearing for undetermined reasons.
- [NTSB MIA92FA142](https://openairdocs.org/ntsb/MIA92FA142.md): Hughes 369HS · Labelle, FL · Accident · 1 fatal · Field investigation · Final report · Jun 26, 1992 · N9089F · Destroyed
  > The pilot-in-command's improper application of collective pitch during an autorotative landing resulting in insufficient rotor RPM and in-flight collision with trees and the terrain. Contributing to the accident was the total loss of engine power due to fuel…
- [NTSB MIA88FA257](https://openairdocs.org/ntsb/MIA88FA257.md): Hughes 500 · Riviera Beach, FL · Accident · Serious injuries · Field investigation · Final report · Aug 19, 1988 · N3766Z · Substantial damage
  > The traffic watch helicopter was cruising northbound along the interstate at 450 ft AGL & 85 KTS airspeed. A grinding noise was heard & the tail rotor separated from the acft. The acft began an uncommanded right turn which was arrested in about 1/4 turn. The…
- [NTSB MIA87LA106](https://openairdocs.org/ntsb/MIA87LA106.md): Hughes 364HS · Opa Locka, FL · Accident · Minor injuries · Limited investigation · Final report · Mar 12, 1987 · N4507C · Substantial damage
  > The pilot of the helicopter was executing a normal approach to the ground when as he neared the ground the ventral fin struck the ground. The tail rotor driveshaft re-centered and the pilot thought the accompanying shudder was a tail rotor failure, and landed…
- [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 MIA83LA079](https://openairdocs.org/ntsb/MIA83LA079.md): Hughes 500-369HS · Boca Raton, FL · Accident · No injuries · Limited investigation · Final report · Feb 21, 1983 · N2254X · Substantial damage
  > The plt reported the flt experienced a total eng power loss & the acft was ditched in the intracoastal waterway. All examinations & tests conducted during the investigation revealed no evidence of a preimpact failure or malfunction of the airframe or eng.
- [NTSB MIA82FKT02](https://openairdocs.org/ntsb/MIA82FKT02.md): Hughes 369HS · Sunrise, FL · Accident · Minor injuries · Closed · Nov 23, 1981 · N9071F · Destroyed
- [NTSB MIA77FLA31](https://openairdocs.org/ntsb/MIA77FLA31.md): Hughes 369HS · Bunnell, FL · Accident · No injuries · Closed · Jun 6, 1977 · N9081F · 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" = 'FL' 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 ('4470728'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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

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