Fatal NTSB investigations: Franklin 6V 350 series

12 cases on aircraft whose registry engine model is Franklin 6V 350 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

19682026

Fatal NTSB investigations: Franklin 6V 350 series per year, 1968–2026: 12 cases
1968	1
1970	1
1972	2
1978	1
1982	1
1987	1
1993	1
2007	1
2009	1
2010	1
2017	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."highestInjuryLevel" = 'Fatal' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27043')) 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.\"highestInjuryLevel\" = 'Fatal'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27043'))
  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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27043'))
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 ERA17FA164Accident · 1 fatalField investigationFinal reportBell-Carson 47G Super C 4 · Timmonsville, SCThe pilot's decision to maneuver the helicopter at a low altitude near trees, which resulted in collision with the trees.Apr 21, 2017 · N865Z · Destroyed NTSB ERA11FA021Accident · 1 fatalField investigationFinal reportSiai-Marchetti S.205/22R · Farmingdale, NYA loss of engine power during a low approach for undetermined reasons.Oct 17, 2010 · N934W · Substantial damage NTSB WPR09FA176Accident · 1 fatalField investigationFinal reportMaule M-4-220C · Hungry Horse, MTThe pilot's improper decision to continue flight into an area of reduced visibility and snow showers during cruise flight, which resulted in the pilot's spatial disorientation and subsequent loss of aircraft control.Apr 1, 2009 · N2007U · Destroyed NTSB DFW07WA110Accident · 1 fatalForeign investigationBell 47G · Ciudad Victoria, MexicoMay 12, 2007 · N25802 · Substantial damage NTSB LAX93FA272Accident · 1 fatalField investigationFinal reportBell 47G2-M · S. Sn Francisco, CAThe pilot's inadequate preflight planning/preparation which resulted in flight into high winds, turbulence and windshear.Jul 2, 1993 · N2473B · Destroyed NTSB CHI87FA139Accident · 2 fatalField investigationFinal reportBell 47G · Dayton, MNAircraft collided with terrain after tailboom structure failed because of internal corrosion. The aircraft was not registered at the time of the accident and the pilot/operator failed to assure that proper or timely preventive maintenance was performed on the…Jun 3, 1987 · N128B · Destroyed NTSB ANC82FA037Accident · 1 fatalField investigationFinal reportMaule M-4-220C · Homer, AKThe pilot departed Homer airport on a special VFR clearance after being advised numerous times that VFR flight was not recommended. Shortly after takeoff (8 minutes) the aircraft dove out of the clouds and crashed near the airport. The pilot was not…Apr 16, 1982 · N40343 · Destroyed NTSB FTW78FA032Accident · 1 fatalClosedBell 47G · Eola, TXMar 15, 1978 · N967B · Destroyed NTSB OAK73FVD14Accident · 1 fatalClosedHiller Acft UH-12C · Brentwood, CASep 12, 1972 · N9734C · Minor damage NTSB ANC72AA043Accident · 2 fatalClosedMaule M4220C · Cordova, AKApr 25, 1972 · N2043U · Destroyed NTSB OAK71AP010Accident · 1 fatalClosedMaule M4-220 · San Ardo, CAAug 22, 1970 · N2002U · Destroyed NTSB MIA69F0149Accident · 1 fatalClosedBell 47G · Merigold, MSSep 2, 1968 · N10175 · Destroyed