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NTSB investigations, 1973, IA

180,610 investigations by the National Transportation Safety Board since 1962: 174,589 accidents, the rest incidents and other occurrences. Each has NTSB’s narrative and, once the investigation is done, its probable cause; since 2008, its findings and sequence of events.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19622026

NTSB investigations, 1973, IA per year, 1962–2026: 2,216 cases
1962	2
1963	2
1964	72
1965	74
1966	108
1967	129
1968	87
1969	98
1970	101
1971	105
1972	76
1973	53
1974	60
1975	49
1976	55
1977	57
1978	65
1979	51
1980	41
1981	60
1982	52
1983	53
1984	39
1985	35
1986	26
1987	30
1988	27
1989	24
1990	24
1991	23
1992	23
1993	22
1994	16
1995	12
1996	15
1997	22
1998	20
1999	18
2000	11
2001	7
2002	14
2003	20
2004	13
2005	13
2006	8
2007	17
2008	18
2009	17
2010	27
2011	23
2012	21
2013	15
2014	9
2015	13
2016	13
2017	16
2018	12
2019	9
2020	12
2021	16
2022	14
2023	17
2024	7
2025	13
2026	15

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 year(c."eventDate") = 1973 AND c."eventStateOrRegion" = 'IA' AND c."eventCountry" = 'USA' 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\") = 1973
    AND c.\"eventStateOrRegion\" = 'IA' AND c.\"eventCountry\" = 'USA'
  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") = 1973
  AND c."eventStateOrRegion" = 'IA' AND c."eventCountry" = 'USA'
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 MKC74AK028Accident · 1 fatalClosedBeech E18S · Muscatine, IANov 27, 1973 · N262AA · Destroyed NTSB MKC74AK027Accident · Serious injuriesClosedBeech 35 · Charles City, IANov 26, 1973 · N6094E · Destroyed NTSB MKC74AK022Accident · 2 fatalClosedMaule M4-220 · Independence, IANov 14, 1973 · N40320 · Destroyed NTSB MKC74AK021Accident · 2 fatalClosedCessna 150 · Conesville, IANov 11, 1973 · N7751E · Destroyed NTSB MKC74DCD20Accident · No injuriesClosedCessna 150 · Waterloo, IANov 4, 1973 · N6328G · Substantial damage NTSB MKC73DCD19Accident · No injuriesClosedPiper PA-28 · Oelwein, IANov 3, 1973 · N1330T · Substantial damage NTSB MKC74DCD18Accident · No injuriesClosedCessna 172 · Davenport, IAOct 14, 1973 · N19749 · Substantial damage NTSB MKC74DCD17Accident · Serious injuriesClosedPiper PA-22 · West Branch, IAOct 8, 1973 · N3336Z · Substantial damage NTSB MKC74AK013Accident · 1 fatalClosedPiper PA-24 · Council Bluf, IASep 28, 1973 · N5547P · Destroyed NTSB MKC74DCD16Accident · No injuriesClosedPitts S-1C · Washburn, IASep 22, 1973 · N17MP · Substantial damage NTSB MKC74DC015Accident · No injuriesClosedPiper PA-30 · Laurens, IASep 20, 1973 · N71AD · Substantial damage NTSB MKC74FCD14Accident · 1 fatalClosedPiper J3C-65 · Redfield, IASep 11, 1973 · N42163 · Destroyed NTSB MKC74DCD12Accident · No injuriesClosedGlobe GC-1B · Blakesburg, IASep 2, 1973 · N3754K · Substantial damage NTSB MKC74DCD13Accident · No injuriesClosedAero Comdr A-9 · Jefferson, IAAug 29, 1973 · N7706V · Destroyed NTSB MKC74DCD10Accident · No injuriesClosedPiper PA-30 · Lemars, IAAug 26, 1973 · N7516Y · Substantial damage NTSB MKC74FCD11Accident · Serious injuriesClosedBell 206A · Des Moines, IAAug 22, 1973 · N7068J · Substantial damage NTSB MKC74DCD21Accident · No injuriesClosedMooney M20C · Marion, IAAug 20, 1973 · N6757N · Substantial damage NTSB MKC74AK006Accident · 3 fatalClosedBeech E35 · Alta, IAAug 16, 1973 · N389W · Destroyed NTSB MKC74FCD07Accident · 1 fatalClosedPiper PA-18A · Dougherty, IAAug 14, 1973 · N8990D · Destroyed NTSB MKC74DCD06Accident · No injuriesClosedBeech 95-B55 · Decorah, IAAug 13, 1973 · N9033V · Substantial damage NTSB MKC74DCD08Accident · No injuriesClosedPiper PA-22 · Independence, IAAug 12, 1973 · N9824D · Substantial damage NTSB MKC74DCD09Accident · No injuriesClosedBeech A23 · Des Moines, IAAug 10, 1973 · N2309Z · Substantial damage NTSB MKC74AK004Accident · 2 fatalClosedCessna 150H · Hampton, IAJul 31, 1973 · N7217S · Destroyed NTSB MKC74FCD05Accident · 1 fatalClosedMooney M20A · Des Moines, IAJul 27, 1973 · N6042X · Destroyed NTSB MKC74IK001Incident · No injuriesClosedBeech D18S · Des Moines, IAJul 19, 1973 · N6126 · Minor damage NTSB MKC74DCD03Accident · Minor injuriesClosedCessna 172 · Bedford, IAJul 18, 1973 · N5741R · Substantial damage NTSB MKC74DCD04Accident · No injuriesClosedPiper PA-18 · Storm Lake, IAJul 16, 1973 · N4484Z · Substantial damage NTSB MKC74DCD02Accident · No injuriesClosedCessna 182 · Waterloo, IAJul 15, 1973 · N2612F · Substantial damage NTSB MKC74DCD01Accident · No injuriesClosedCessna 336 · Bellevue, IAJul 4, 1973 · N1766Z · Substantial damage NTSB MKC73DCD69Accident · No injuriesClosedPiper PA-25 · Mediapolis, IAJun 25, 1973 · N4719Y · Substantial damage NTSB MKC73DCD67Accident · No injuriesClosedCessna 120 · Fort Dodge, IAJun 12, 1973 · N76726 · Substantial damage NTSB MKC73FCD68Accident · No injuriesClosedBell 47G-3B · Clarinda, IAJun 4, 1973 · N65036 · Destroyed NTSB MKC73FCD63Accident · No injuriesClosedPiper PA-25 · Salix, IAMay 29, 1973 · N4802Y · Minor damage NTSB MKC73FCD62Accident · No injuriesClosedCessna 172 · Mason City, IAMay 15, 1973 · N20648 · Substantial damage NTSB MKC73DCD66Accident · No injuriesClosedPiper PA-12 · Davenport, IAMay 13, 1973 · N4014M · Substantial damage NTSB MKC73DCD59Accident · No injuriesClosedCessna 172 · Algona, IAMay 11, 1973 · N20028 · Substantial damage NTSB MKC73DCD60Accident · No injuriesClosedCessna 120 · Councl Bluff, IAMay 5, 1973 · N3089N · Substantial damage NTSB MKC73FCD61Accident · No injuriesClosedEnstrom F-28A · Altoona, IAMay 4, 1973 · N2517M · Substantial damage NTSB MKC73DCD58Accident · Minor injuriesClosedErco 415-C · Greenfield, IAApr 22, 1973 · N2687H · Substantial damage NTSB MKC73DCD57Accident · No injuriesClosedCessna 172 · Winterset, IAApr 22, 1973 · N1478F · Substantial damage NTSB MKC73AK064Accident · 6 fatalClosedBeech E18S · Davenport, IAApr 19, 1973 · N310WA · Destroyed NTSB MKC73DCD55Accident · No injuriesClosedPiper PA-28 · Wapello, IAApr 14, 1973 · N8502W · Substantial damage NTSB MKC73DCD56Accident · No injuriesClosedCessna 150 · Jefferson, IAApr 11, 1973 · N7148S · Substantial damage NTSB MKC73DCD53Accident · No injuriesClosedPiper PA-25 · Hornick, IAMar 20, 1973 · N8800L · Substantial damage NTSB MKC73DCD52Accident · No injuriesClosedBell 47G-2 · Hanlontown, IAMar 20, 1973 · N12412 · Substantial damage NTSB MKC73DCD54Accident · No injuriesClosedErco 415-C · Amana, IAMar 12, 1973 · N2395H · Substantial damage NTSB MKC73DCD50Accident · No injuriesClosedCessna 150K · Mitchellvile, IAMar 7, 1973 · N5913G · Substantial damage NTSB MKC73FCD49Accident · Serious injuriesClosedPiper PA-30 · Sioux City, IAFeb 28, 1973 · N7150Y · Destroyed NTSB MKC73AK051Accident · 2 fatalClosedCessna 180H · Mt.Vernon, IAFeb 19, 1973 · N9058M · Destroyed NTSB MKC73DCD51Accident · No injuriesClosedCessna 150 · Waterloo, IAFeb 17, 1973 · N1264Q · Substantial damage