# NTSB investigations: Franklin 6A4150 series, 1971

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 MIA72FLD41](https://openairdocs.org/ntsb/MIA72FLD41.md): Stinson 108-1 · Oklawaha, FL · Accident · No injuries · Closed · Dec 24, 1971 · N8470K · 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 DEN72FTE40](https://openairdocs.org/ntsb/DEN72FTE40.md): Stinson 108-2 · Watkins, CO · Accident · No injuries · Closed · Nov 4, 1971 · N97086 · Substantial damage
- [NTSB LAX72DUQ39](https://openairdocs.org/ntsb/LAX72DUQ39.md): Bellanca 14-13 · Saugus, CA · Accident · Minor injuries · Closed · Oct 30, 1971 · N74421 · Substantial damage
- [NTSB ANC72DAG67](https://openairdocs.org/ntsb/ANC72DAG67.md): Stinson 108 · Anchorage, AK · Accident · No injuries · Closed · Oct 20, 1971 · N44BS · Substantial damage
- [NTSB OAK72DVA18](https://openairdocs.org/ntsb/OAK72DVA18.md): Stinson 108-1 · Porterville, CA · Accident · No injuries · Closed · Sep 5, 1971 · N9041K · Substantial damage
- [NTSB SEA72FYG08](https://openairdocs.org/ntsb/SEA72FYG08.md): Bellanca 14-13 · Orofino, ID · Accident · Serious injuries · Closed · Aug 29, 1971 · N74450 · Substantial damage
- [NTSB MKC72FER15](https://openairdocs.org/ntsb/MKC72FER15.md): Bellanca 14-13 · Effie, MN · Accident · No injuries · Closed · Aug 11, 1971 · N86787 · Substantial damage
- [NTSB SEA72DYC07](https://openairdocs.org/ntsb/SEA72DYC07.md): Stinson 108-1 · Salem, OR · Accident · No injuries · Closed · Jul 18, 1971 · N9023K · Substantial damage
- [NTSB MIA71DLA53](https://openairdocs.org/ntsb/MIA71DLA53.md): Bellanca 14-13 · Jacksonville, FL · Accident · Serious injuries · Closed · Jun 27, 1971 · N7425R · No damage
- [NTSB OAK71DVA94](https://openairdocs.org/ntsb/OAK71DVA94.md): Stinson 108-1 · Lone Pine, CA · Accident · No injuries · Closed · Jun 20, 1971 · N9193K · Substantial damage
- [NTSB NYC71FFJ33](https://openairdocs.org/ntsb/NYC71FFJ33.md): Stinson 108-1 · Skaneateles, NY · Accident · No injuries · Closed · May 19, 1971 · N9198K · Substantial damage
- [NTSB CHI71DDJ47](https://openairdocs.org/ntsb/CHI71DDJ47.md): Stinson 108-1 · Milwaukee, WI · Accident · No injuries · Closed · Apr 4, 1971 · N9155K · Substantial damage
- [NTSB CHI71FBD60](https://openairdocs.org/ntsb/CHI71FBD60.md): Stinson 108-1 · Joliet, IL · Accident · No injuries · Closed · Mar 20, 1971 · N97933 · 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 year(c."eventDate") = 1971
  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&year=1971

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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.