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NTSB investigations: Franklin 6A4165 series, TX

21 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

19662026

Where

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" = 'TX' 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\" = 'TX' 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" = 'TX' 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 WPR23LA117Accident · No injuriesClass 3 · LimitedFinal reportStinson 108 · Lampasas, TXImproper case hardening of the crankshaft timing gear, which resulted in the fatigue failure of the gear and a total loss of engine power.Mar 4, 2023 · N6532M · Substantial damage NTSB CEN13LA305Accident · Minor injuriesLimited investigationFinal reportStinson 108-3 · Beaumont, TXThe lack of a forward clamp on the carburetor heat box rubber boot, which allowed the boot to be ingested into the inlet of the carburetor heat box, restricting the airflow and leading to a subsequent partial loss of engine power.May 23, 2013 · N121CM · Substantial damage NTSB CEN09LA384Accident · No injuriesLimited investigationFinal reportStinson 108-3 · Llano, TXThe pilot's inability to maintain aircraft control due to the failure of the left main landing gear wheel, which resulted in the separation of the wheel from the aircraft.Jun 24, 2009 · N6939M · Substantial damage NTSB DFW08LA144Accident · No injuriesLimited investigationFinal reportStinson 108-3 · Roanoke, TXThe departing pilot's inadequate visual lookout resulting in his airplane colliding with the landing airplane. Contributing to the accident was the trees/visual obstructions along the runway's approach path.May 15, 2008 · N6805M · 2 aircraft · Substantial damage NTSB FTW97LA035Accident · No injuriesLimited investigationFinal reportStinson 108-3 · Tyler, TXa loss of engine power due to failure of the crankshaft. A factor was the lack of suitable terrain for the forced landing.Nov 3, 1996 · N798C · Substantial damage NTSB FTW96LA202Accident · No injuriesLimited investigationFinal reportStinson 108-2 · El Paso, TXthe pilot's improper inflight planning/decision, which resulted in fuel exhaustion and a subsequent forced landing. A factor relating to the accident was: the unfavorable en route wind.May 6, 1996 · N427C · Substantial damage NTSB FTW96LA077Accident · Minor injuriesLimited investigationFinal reportStinson ST-108-2 · Lake Dallas, TXthe failure of the #6 connecting rod assembly. A factor was the lack of suitable terrain for a forced landing which resulted in a water landing.Dec 27, 1995 · N135C · Destroyed NTSB FTW95LA093Accident · Serious injuriesLimited investigationFinal reportStinson 108-2 · Roanoke, TXLoss of engine power for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.Jan 14, 1995 · N9734K · Substantial damage NTSB FTW87LA187Accident · Minor injuriesLimited investigationFinal reportStinson 108-3 · Hereford, TXThe acft was taking off from a state hwy with a truck blocking traffic at the end of a 2,500 foot stretch. The plt elected to tkof toward the truck, however, during the tkof run, he realized that he could not clear the truck and pulled up sharply. Drng the…Aug 3, 1987 · N6809M · Destroyed NTSB FTW85FA152Accident · 1 fatalField investigationFinal reportUniversal Stinson 108 · Emhouse, TXWitnesses observed the student plt making repeated low passes near his friend's house. While maneuvering, the acft collided with a power line, then crashed to the ground inverted. The student held a student plt certificate that was dated 10/17/62. No record…Mar 17, 1985 · N953D · Substantial damage NTSB FTW85LA033Accident · No injuriesLimited investigationFinal reportStinson 108 · Sandia, TXThe plt was attempting a night landing at an unlighted airport. Plt stated he elecuted a low angle approach, knowing of elevated and wooded terrain off the end of the runway. On sighting trees to his left, he initiated a go-around but struck other trees…Oct 31, 1984 · N97476 · Substantial damage NTSB FTW85LA013Accident · No injuriesLimited investigationFinal reportStinson 108-2 · Booker, TXPlt arrived at destination at dusk. Lighted wind tetrahedron was out of service. Plt executed low pass in unsuccesful attempt to see windsock. Plt was aware of strong surface winds (about 35 KTS), presumed to be from sw, from recent frontal passage and…Oct 15, 1984 · N9737K · Substantial damage NTSB FTW84LA173Accident · Minor injuriesLimited investigationFinal reportStinson 108-3 · Blanco, TXAccording to the plt, the acft was standing unattended with the eng running at 1000 RPM when an inexperienced person attempted to shut down the eng. He reportedly pushed the throttle in, instead of pulling it out & the acft jumped the chocks. According to 2…Mar 12, 1984 · N4004C · Destroyed NTSB FTW78DQD04Accident · No injuriesClosedStinson 108-1 · Marfa, TXNov 19, 1977 · N8553K · Substantial damage NTSB FTW76DPD39Accident · No injuriesClosedStinson 108-3 · Vernon, TXMay 4, 1976 · N646C · Substantial damage NTSB FTW75FQG33Accident · Minor injuriesClosedStinson 108-3 · Plains, TXNov 27, 1974 · N6192M · Substantial damage NTSB FTW74DPD32Accident · No injuriesClosedStinson 108 · Mineral Wells, TXDec 12, 1973 · N8406K · Substantial damage NTSB FTW71FPA20Accident · No injuriesClosedStinson 108-3 · Midlothian, TXDec 21, 1970 · N910C · Substantial damage NTSB FTW68D0351Accident · Minor injuriesClosedStinson 108-2 · Houston, TXNov 14, 1967 · N9668K · Substantial damage NTSB FTW67D0473Accident · No injuriesClosedStinson 108 · Abilene, TXMar 26, 1967 · N8012K · Substantial damage NTSB FTW67D0336Accident · No injuriesClosedStinson 108-3 · Houston, TXNov 26, 1966 · N798C · Substantial damage