# NTSB investigations: Enstrom F-28C, WA

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 SEA00LA103](https://openairdocs.org/ntsb/SEA00LA103.md): Enstrom F-28C · Kennewick, WA · Accident · No injuries · Limited investigation · Final report · Jun 8, 2000 · N80193 · Substantial damage
  > The pilot's exceedance of the helicopter's hovering capabilities in a downwind hover. Factors included tailwind conditions, the pilot's lack of experience in the type of operation being conducted, and trees in the area where the helicopter settled.
- [NTSB SEA97FA003](https://openairdocs.org/ntsb/SEA97FA003.md): Enstrom F-28C · Spokane, WA · Accident · No injuries · Field investigation · Final report · Oct 5, 1996 · N574H · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB SEA93FA178](https://openairdocs.org/ntsb/SEA93FA178.md): Enstrom F-28C · Seattle, WA · Accident · No injuries · Field investigation · Final report · Aug 18, 1993 · N86198 · Substantial damage
  > Shorted magneto condensers. Factors include a hidden obstruction in the landing area, and a reduction in rotor RPM from attempting to avoid the obstruction.
- [NTSB SEA90LA116](https://openairdocs.org/ntsb/SEA90LA116.md): Enstrom F28C · Camas, WA · Accident · No injuries · Limited investigation · Final report · Jun 7, 1990 · N51729 · Substantial damage
  > The failure of a sprag clutch in the rotor-drive mechanism, at an altitude and position that precluded or limited the possibility of a successful outcome.
- [NTSB SEA81FYP28](https://openairdocs.org/ntsb/SEA81FYP28.md): Enstrom F-28C · Rice, WA · Accident · Minor injuries · Closed · Jul 21, 1981 · N5689M · Destroyed
- [NTSB SEA77DYK20](https://openairdocs.org/ntsb/SEA77DYK20.md): Enstrom F28C · Medford, WA · Accident · No injuries · Closed · Jul 22, 1977 · N51727 · 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" = 'WA' 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 ('3300407'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=3300407&state=WA

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