NTSB investigations: Lycoming 0-540 series, 1972, IL

7 cases on aircraft whose registry engine model is Lycoming 0-540 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

19642026

NTSB investigations: Lycoming 0-540 series, 1972, IL per year, 1964–2026: 119 cases
1964	8
1965	7
1966	6
1967	6
1968	7
1969	4
1970	7
1971	8
1972	7
1973	4
1974	1
1975	1
1976	2
1977	1
1979	4
1980	2
1981	2
1982	1
1983	3
1984	1
1985	2
1986	1
1988	2
1989	1
1995	1
1996	1
1997	1
1999	2
2001	2
2002	2
2003	1
2005	2
2006	3
2008	1
2009	1
2010	2
2014	1
2016	1
2017	1
2019	2
2020	2
2022	2
2023	1
2025	2

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 year(c."eventDate") = 1972 AND c."eventStateOrRegion" = 'IL' 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 ('41532')) 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 year(c.\"eventDate\") = 1972
    AND c.\"eventStateOrRegion\" = 'IL' 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 ('41532'))
  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 year(c."eventDate") = 1972
  AND c."eventStateOrRegion" = 'IL' 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 ('41532'))
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 CHI73FEE34Accident · No injuriesClosedPiper PA-23 · Joliet, ILDec 7, 1972 · N6500D · Substantial damage NTSB CHI73FEV16Accident · No injuriesClosedPiper PA-24 · Burnt Prairie, ILNov 26, 1972 · N5186P · Substantial damage NTSB CHI73FCA01Accident · Serious injuriesClosedPiper PA-25 · Dorsey, ILSep 30, 1972 · N7247Z · Substantial damage NTSB CHI73FEV08Accident · No injuriesClosedPiper PA-25 · Browns, ILAug 23, 1972 · N8807L · Substantial damage NTSB CHI73FEV07Accident · Serious injuriesClosedPiper PA-25 · Brookport, ILAug 13, 1972 · N4552Y · Destroyed NTSB CHI73FEE14Incident · No injuriesClosedPiper PA-24 · Rockford, ILAug 7, 1972 · N6460P · Minor damage NTSB CHI72FEE84Accident · Serious injuriesClosedPiper PA-24 · Chicago, ILJun 10, 1972 · N7883P · Minor damage