NTSB investigations: Franklin 6A4150 series, UT

6 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

19652026

NTSB investigations: Franklin 6A4150 series, UT per year, 1965–2026: 6 cases
1965	1
1966	2
1993	2
2023	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" = 'UT' 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\" = 'UT' 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" = 'UT' 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 WPR23LA109Accident · No injuriesClass 4 · LimitedFinal reportStinson 108-1 · Morgan, UTThe pilot’s failure to maintain directional control during landing.Feb 12, 2023 · N8135K · Substantial damage NTSB SEA93LA117Accident · 1 fatalLimited investigationFinal reportStinson 108-1 · Brigham City, UTThe premature liftoff by the PIC and his failure to attain proper rate of climb. Factors relating to the accident were the gusty crosswind weather conditions, the failure of the PIC to use all available runway, and transmission wires.May 21, 1993 · N8589K · Destroyed NTSB SEA93LA054Accident · 1 fatalLimited investigationFinal reportStinson 108-2 · Fruit Heights, UTVFR flight into IMC conditions was attempted by the pilot. Factors include rain, snow, and fog.Jan 16, 1993 · N8004K · Destroyed NTSB DEN67D0042Accident · No injuriesClosedBellanca 14-13 · Panguitch, UTJul 13, 1966 · N74209 · Substantial damage NTSB DEN66F0332Accident · No injuriesClosedBellanca 14-13 · Mexican Hat, UTMay 15, 1966 · N86825 · Substantial damage NTSB DEN66F0172Accident · No injuriesClosedStinson 108 · Sandy, UTNov 20, 1965 · N9168K · Substantial damage