NTSB investigations: Franklin 6V4 series, SC

7 cases on aircraft whose registry engine model is Franklin 6V4 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

19712026

NTSB investigations: Franklin 6V4 series, SC per year, 1971–2026: 7 cases
1971	1
1974	1
1975	1
1976	1
1978	1
1995	1
1997	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" = 'SC' 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 ('27033')) 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\" = 'SC' 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 ('27033'))
  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" = 'SC' 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 ('27033'))
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 MIA97FA248Accident · 2 fatalField investigationFinal reportBell 47G · Saluda, SCin-flight collision with a tree, for undetermined reason(s).Sep 19, 1997 · N70747 · Destroyed NTSB ATL96LA023Accident · No injuriesLimited investigationFinal reportHiller 12C · N. Myrtle Beach, SCThe pilot's improper operation of the flight controls during a practice autorotation, and the certified flight instructor's inadequate supervision of the operationDec 18, 1995 · N234SM · Substantial damage NTSB MIA78DLG36Accident · No injuriesClosedBell 47D1 · Summerville, SCAug 26, 1978 · N4116A · Substantial damage NTSB MIA76FLG51Accident · No injuriesClosedBell 47G · Ridge Spring, SCSep 8, 1976 · N1273 · Substantial damage NTSB MIA76FLG04Accident · No injuriesClosedBell 47G · Myrtle Beach, SCJul 26, 1975 · N1773 · Substantial damage NTSB MIA75FLG02Accident · No injuriesClosedBell 47G · Myrtle Beach, SCJul 5, 1974 · N1773 · Substantial damage NTSB MIA72FLG08Accident · No injuriesClosedBell 47D-1 · Cheraw, SCAug 14, 1971 · N908B · Substantial damage