NTSB investigations: Franklin 6A4150 series, IN

8 cases on aircraft whose registry engine model is Franklin 6A4150 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

19642026

NTSB investigations: Franklin 6A4150 series, IN per year, 1964–2026: 8 cases
1964	2
1967	1
1969	1
1976	1
1983	1
1991	1
2013	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" = 'IN' 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

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\" = 'IN' 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"

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" = 'IN' 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

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 CEN13CA317Accident · No injuriesData collectionFinal reportStinson 108 · Lebanon, INThe pilot did not maintain control of the airplane during the landing roll.Jun 4, 2013 · N677JD · Substantial damage NTSB CHI91LA251Accident · Minor injuriesLimited investigationFinal reportStinson 108-1 · Elwood, INA premature lift-off which resulted in a mush/stall. A factor related to the accident was lack of total experience in type of operation.Aug 4, 1991 · N8619K · Substantial damage NTSB CHI83LA146Accident · No injuriesLimited investigationFinal reportStinson 108 · Rochester, INThe acft collided with a snow bank and nosed over during landing. The weather was VMC and the wind was from 210 degrees at 5 KTS. The pilot reported his right foot slipped off the the rudder pedal and 'attributes this to stinsons and many other acft were not…Mar 25, 1983 · N97270 · Substantial damage NTSB CHI76FET50Accident · No injuriesClosedStinson 108-1 · Woodburn, INSep 5, 1976 · N8826K · Substantial damage NTSB CHI70F0184Accident · No injuriesClosedBellanca 14-13 · Linton, INAug 30, 1969 · N86858 · Substantial damage NTSB CHI68D0014Accident · No injuriesClosedStinson 108-1 · Scottsburg, INMay 26, 1967 · N8361K · Substantial damage NTSB UNK64X3867Accident · No injuriesClosedBeechcraft C18 · Brownsburg, INSep 7, 1964 · N44569 · 2 aircraft · Minor damage NTSB UNK64X3851Accident · No injuriesClosedBellanca 14132 · Valparaiso, INSep 7, 1964 · N74388 · Substantial damage