# NTSB investigations: Sikorsky S-64E, 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 SEA99LA038](https://openairdocs.org/ntsb/SEA99LA038.md): Sikorsky S-64E · Shelton, WA · Accident · 1 fatal · Limited investigation · Final report · Mar 2, 1999 · N194AC · No damage
  > The failure of the victim to follow the procedure that required him to make sure that all choker lines had separated from the helicopter's release mechanism prior to entering the landing (collection area).
- [NTSB SEA91FA143](https://openairdocs.org/ntsb/SEA91FA143.md): Sikorsky S-64E · Index, WA · Accident · Serious injuries · Field investigation · Final report · Jun 27, 1991 · N6959R · Destroyed
  > The control interference by the mechanic when he inadvertently raised the collective pitch and the copilot's failure to attend the flight controls. Factors relating to the accident were the motion sickness of the mechanic, inadequate collective pitch control…

## 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 ('8142604'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=8142604&state=WA

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