NTSB investigations: Jacobs L4 /R755-7, OH

7 cases on aircraft whose registry engine model is Jacobs L4 /R755-7. 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: Jacobs L4 /R755-7, OH per year, 1964–2026: 7 cases
1964	1
1970	1
1971	1
1972	1
1974	1
2016	1
2020	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" = 'OH' 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 ('35003')) 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\" = 'OH' 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 ('35003'))
  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" = 'OH' 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 ('35003'))
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 CEN20CA280Accident · No injuriesClass 4 · Data collectionFinal reportWaco YKC · New Carlisle, OHThe pilot's failure to maintain proper approach speed and descent path to the runway, which resulted in excessive speed at touchdown and insufficient runway remaining to safely bring the airplane to a stop before the end of the runway. Contributing to the…Jul 14, 2020 · N14139 · Substantial damage NTSB GAA16CA238Accident · No injuriesData collectionFinal reportWaco YKS 7 · Millersburg, OHThe pilot's loss of directional control during landing in gusting wind conditions resulting in excessive brake application, and airplane nose over.May 13, 2016 · N17734 · Substantial damage NTSB CHI74FEK27Accident · No injuriesClosedCessna 195 · Newark, OHJun 1, 1974 · N195P · Substantial damage NTSB CHI73FEG14Accident · Serious injuriesClosedCessna 195A · Tipp City, OHDec 26, 1972 · N3466V · Substantial damage NTSB CHI71DGD43Accident · No injuriesClosedCessna 195 · Holgate, OHJan 18, 1971 · N3083B · Substantial damage NTSB CHI71FGA01Accident · No injuriesClosedCessna 195A · Williamsburg, OHJul 8, 1970 · N1090D · Substantial damage NTSB UNK65X0225Accident · No injuriesClosedCessna 195 · North Benton, OHOct 10, 1964 · N3472V · Substantial damage