# NTSB investigations: Franklin 6V4 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 FTW72FPA09](https://openairdocs.org/ntsb/FTW72FPA09.md): Bell 47D1 · Carrollton, TX · Accident · No injuries · Closed · Oct 24, 1971 · N7735 · Substantial damage
- [NTSB MIA72FKT22](https://openairdocs.org/ntsb/MIA72FKT22.md): Bell 47D-1 · South Bay, FL · Accident · No injuries · Closed · Oct 20, 1971 · N160B · Substantial damage
- [NTSB FTW72FPA07](https://openairdocs.org/ntsb/FTW72FPA07.md): Hiller UH-12C · Lorena, TX · Accident · No injuries · Closed · Oct 7, 1971 · N73875 · Substantial damage
- [NTSB FTW72DPD18](https://openairdocs.org/ntsb/FTW72DPD18.md): Hiller UH12C · Grandview, TX · Accident · No injuries · Closed · Sep 14, 1971 · N73875 · Substantial damage
- [NTSB FTW72DPD09](https://openairdocs.org/ntsb/FTW72DPD09.md): Hiller UH12C · Roanoke, TX · Accident · No injuries · Closed · Sep 5, 1971 · N5328V · Substantial damage
- [NTSB NYC72DFA08](https://openairdocs.org/ntsb/NYC72DFA08.md): Bell 47-G · Malone, NY · Accident · No injuries · Closed · Aug 21, 1971 · N932B · Destroyed
- [NTSB MKC72FCJ19](https://openairdocs.org/ntsb/MKC72FCJ19.md): Bell 47D1 · Bellwood, NE · Accident · Serious injuries · Closed · Aug 21, 1971 · N903B · Destroyed
- [NTSB MIA72FLG08](https://openairdocs.org/ntsb/MIA72FLG08.md): Bell 47D-1 · Cheraw, SC · Accident · No injuries · Closed · Aug 14, 1971 · N908B · Substantial damage
- [NTSB MKC72IK008](https://openairdocs.org/ntsb/MKC72IK008.md): Bell 47G · St Louis, MO · Incident · Serious injuries · Closed · Aug 3, 1971 · N54047 · Substantial damage
- [NTSB FTW71FPD52](https://openairdocs.org/ntsb/FTW71FPD52.md): Hiller UH12B · Arlington, TX · Accident · No injuries · Closed · Apr 28, 1971 · N10195 · Destroyed
- [NTSB LAX71FUA47](https://openairdocs.org/ntsb/LAX71FUA47.md): Bell 47D1 · Long Beach, CA · Accident · No injuries · Closed · Feb 8, 1971 · N74124 · Substantial damage
- [NTSB OAK71FVA53](https://openairdocs.org/ntsb/OAK71FVA53.md): Hiller UH12B · Fresno, CA · Accident · No injuries · Closed · Jan 17, 1971 · N5104V · 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 ('27033'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27033&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.