# NTSB investigations: Franklin 6A4150 series, OK

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 FTW04LA003](https://openairdocs.org/ntsb/FTW04LA003.md): Stinson 108-1 · Pauls Valley, OK · Accident · No injuries · Limited investigation · Final report · Oct 5, 2003 · N845 · Destroyed
  > The loss of engine power for undetermined reasons.
- [NTSB FTW74FPM19](https://openairdocs.org/ntsb/FTW74FPM19.md): Bellanca 14-13 · Stilwell, OK · Accident · No injuries · Closed · Jan 25, 1974 · N86833 · Substantial damage
- [NTSB FTW72FPM12](https://openairdocs.org/ntsb/FTW72FPM12.md): Stinson 108-1 · Calera, OK · Accident · Minor injuries · Closed · Nov 7, 1971 · N97441 · Substantial damage
- [NTSB FTW70FPJ08](https://openairdocs.org/ntsb/FTW70FPJ08.md): Bellanca 14-13 · Enid, OK · Accident · No injuries · Closed · Mar 12, 1970 · N74412 · 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" = 'OK' 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 ('27024'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27024&state=OK

---
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.