NTSB investigations: Franklin 6A4165 series, MO

8 cases on aircraft whose registry engine model is Franklin 6A4165 series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19652026

NTSB investigations: Franklin 6A4165 series, MO per year, 1965–2026: 8 cases
1965	1
1967	1
1969	1
1970	1
1971	1
1974	1
2010	1
2012	1

Where

Open the map

Latest cases

Query with 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" = 'MO' 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 ('27025')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

duckdb -csv -c "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\" = 'MO' 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 ('27025'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

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" = 'MO' 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 ('27025'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

NTSB CEN13LA091Accident · Minor injuriesLimited investigationFinal reportStinson 108-2 · Halfway, MOThe pilot's failure to properly maintain the airplane and engine, which resulted in a total loss of engine power due to improperly installed magnetos and a broken camshaft.Dec 5, 2012 · N8775K · Substantial damage NTSB CEN10CA214Accident · No injuriesData collectionFinal reportStinson 108-2 · Dexter, MOA loss of engine power for an undetermined reason.Apr 17, 2010 · N988D · Substantial damage NTSB MKC75FCG02Accident · Minor injuriesClosedStinson 108-3 · Harrisonville, MOJul 14, 1974 · N6782M · Substantial damage NTSB MKC71FCG63Accident · No injuriesClosedStinson 108-3 · Bahner, MOApr 28, 1971 · N6431M · Substantial damage NTSB MKC71DCG19Accident · No injuriesClosedStinson 108 · Ethel, MOAug 15, 1970 · N8040K · Substantial damage NTSB MKC70D0226Accident · No injuriesClosedStinson 108-3 · St.Charles, MOSep 21, 1969 · N6545M · Substantial damage NTSB MKC68D0226Accident · No injuriesClosedStinson 108-3 · Painton, MOSep 9, 1967 · N625C · Substantial damage NTSB MKC66D0079Accident · No injuriesClosedStinson 108-3 · Branson, MOJun 20, 1965 · N6082M · Substantial damage