# NTSB investigations: Franklin 6A&6V335 series, 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 SEA98FA090](https://openairdocs.org/ntsb/SEA98FA090.md): Maule M-5-220C · Kettle Falls, WA · Accident · 2 fatal · Field investigation · Final report · Jun 6, 1998 · N16CB · Destroyed
  > The pilot's failure to maintain terrain clearance. A factor was an attempt to perform aerobatics at low altitude.
- [NTSB SEA80DYE47](https://openairdocs.org/ntsb/SEA80DYE47.md): Coot B · Kelso, WA · Accident · 2 fatal · Closed · Jul 26, 1980 · N7141 · Destroyed
- [NTSB SEA77FYE24](https://openairdocs.org/ntsb/SEA77FYE24.md): Hiller Acft 12C · Mt Vernon, WA · Accident · Serious injuries · Closed · Jun 17, 1977 · N5330V · Destroyed
- [NTSB SEA66F0056](https://openairdocs.org/ntsb/SEA66F0056.md): Cessna 172 · Vancouver, WA · Accident · No injuries · Closed · Jul 2, 1965 · N8230U · 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.engine_model_code IN ('27020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27020&state=WA

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.