# NTSB investigations: Hughes 369HS: Loss of engine power

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 FTW92LA199](https://openairdocs.org/ntsb/FTW92LA199.md): Hughes 369HS · Monroe, LA · Accident · Minor injuries · Limited investigation · Final report · Aug 3, 1992 · N501FH · Substantial damage
  > The pilot's failure to maintain adequate rotor RPM during autorotation. Factors were the tailwind and the power loss for undetermined reasons.
- [NTSB LAX91LA198](https://openairdocs.org/ntsb/LAX91LA198.md): Hughes 369HS · Keanae, HI · Accident · Minor injuries · Limited investigation · Final report · May 5, 1991 · N9219F · Substantial damage
  > The total failure in fatigue of the helicopter's spur adapter gearshaft. A contributing factor was related to the lack of a suitable emergency landing site.
- [NTSB MKC90LA024](https://openairdocs.org/ntsb/MKC90LA024.md): Mcdonnell Douglas 369HS · Oklee, MN · Accident · Serious injuries · Limited investigation · Final report · Nov 9, 1989 · N9213F · Substantial damage
  > An undetermined power plant failure. Factors related to the accident were: the snow covered terrain, snow, and gusty wind.
- [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 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 ANC82DA039](https://openairdocs.org/ntsb/ANC82DA039.md): Hughes 369HS · Tok, AK · Accident · No injuries · Final report · May 4, 1982 · N9239F · Substantial damage
  > The pilot was conducting a non-revenue, sling-load operation on mt neuberer, while donating his services to Tok community tv, inc. he stated that he was lifting three empty propane bottles from a snow field when he noticed the auto relight lamp flash. He…

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4470728')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 350))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470728&occurrence=350

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