# NTSB investigations: Franklin 6A-350SER, 1973

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 MIA74FLA25](https://openairdocs.org/ntsb/MIA74FLA25.md): Maule M4220C · Ft George, FL · Accident · No injuries · Closed · Nov 25, 1973 · N40650 · Substantial damage
- [NTSB OAK74FXQ01](https://openairdocs.org/ntsb/OAK74FXQ01.md): Maule 220-C · Reno, NV · Accident · No injuries · Closed · Jul 21, 1973 · N40634 · Substantial damage
- [NTSB LAX73FUA42](https://openairdocs.org/ntsb/LAX73FUA42.md): Maule M4220C · Long Beach, CA · Accident · No injuries · Closed · May 14, 1973 · N40633 · Substantial damage
- [NTSB DEN73DTE61](https://openairdocs.org/ntsb/DEN73DTE61.md): Maule M4220C · La Junta, CO · Accident · Minor injuries · Closed · Feb 25, 1973 · N40634 · 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") = 1973
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27023'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27023&year=1973

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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.