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NTSB investigations, 1974, IA

180,630 investigations by the National Transportation Safety Board since 1962: 174,609 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, 1974, 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") = 1974 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\") = 1974
    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") = 1974
  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 MKC75FCD30Accident · No injuriesClosedCessna 150 · Ottuma, IADec 31, 1974 · N7757F · Substantial damage NTSB MKC75FCD29Accident · No injuriesClosedHughes 269A · Bettendorf, IADec 30, 1974 · N8823F · Destroyed NTSB MKC75FCD28Accident · No injuriesClosedLuscombe 8A · Rockwell Cty, IADec 28, 1974 · N45927 · Substantial damage NTSB MKC75FCD27Accident · Serious injuriesClosedAeronca 7AC · Graf, IADec 22, 1974 · N85697 · Substantial damage NTSB MKC74AK030Accident · 1 fatalClosedCessna 182 · Beacon, IADec 12, 1974 · N5323B · Destroyed NTSB MKC75FCD26Accident · No injuriesClosedMooney M20A · Guttenberg, IADec 11, 1974 · N6085X · Substantial damage NTSB MKC75FCD25Accident · No injuriesClosedPiper PA-32 · Clarinda, IADec 8, 1974 · N4075W · Substantial damage NTSB MKC75AK029Accident · 1 fatalClosedCessna 150 · Johnston, IADec 5, 1974 · N5797G · Destroyed NTSB MKC75DCD24Accident · No injuriesClosedLockheed 12A · Osage, IANov 21, 1974 · N18137 · Substantial damage NTSB MKC75DCD23Accident · No injuriesClosedBeech B55 · Marion, IANov 9, 1974 · N6288V · Substantial damage NTSB MKC75AK027Accident · 1 fatalClosedCessna 150K · Hedrick, IANov 6, 1974 · N6463G · Destroyed NTSB MKC75FCD22Accident · No injuriesClosedHughes 269B · Waterloo, IAOct 30, 1974 · N9487F · Substantial damage NTSB MKC75FCD21Accident · No injuriesClosedPiper PA-24 · Elkader, IAOct 20, 1974 · N7782P · Substantial damage NTSB MKC75FCD19Accident · Minor injuriesClosedCessna 150 · Runnells, IAOct 15, 1974 · N1126Y · Substantial damage NTSB MKC75FCD18Accident · No injuriesClosedPiper PA-28 · Fort Dodge, IAOct 1, 1974 · N5322L · Substantial damage NTSB MKC75DCD20Accident · No injuriesClosedPiper PA-28 · Milford, IASep 14, 1974 · N7721N · Substantial damage NTSB MKC75FCD17Accident · Serious injuriesClosedRyan Navion · Monticello, IASep 8, 1974 · N91728 · Substantial damage NTSB MKC75FCD16Case · No injuriesClosedGrumman G-164 · Alexander, IASep 7, 1974 · N12LW · Substantial damage NTSB MKC75DCD15Accident · No injuriesClosedCessna 150H · Emmetsville, IAAug 30, 1974 · N6725S · Substantial damage NTSB MKC75FCD13Accident · No injuriesClosedCallair A-9 · Gilmore City, IAAug 26, 1974 · N3564G · Substantial damage NTSB MKC75FCD14Accident · Minor injuriesClosedCessna 150 · Runnells, IAAug 24, 1974 · N5753G · Substantial damage NTSB MKC75FCD11Accident · 1 fatalClosedPiper PA-11 · Rockwell Cty, IAAug 24, 1974 · N4858M · Substantial damage NTSB MKC75FCD10Accident · 1 fatalClosedPiper PA-18 · Paton, IAAug 21, 1974 · N3390B · Destroyed NTSB MKC75FCD09Accident · No injuriesClosedPiper PA-25 · Storm Lake, IAAug 18, 1974 · N8658L · Substantial damage NTSB MKC75FCD08Accident · No injuriesClosedCallair A-9B · Harcourt, IAAug 15, 1974 · N7765V · Destroyed NTSB MKC75DCD06Accident · No injuriesClosedPiper PA-30 · Meridan, IAAug 9, 1974 · N7731Y · Substantial damage NTSB MKC75AK010Accident · 2 fatalClosedCessna 310 · Pisgah, IAAug 9, 1974 · N6862T · Destroyed NTSB MKC75FCD04Accident · Minor injuriesClosedMaule M-4 · West Liberty, IAJul 27, 1974 · N40638 · Substantial damage NTSB MKC75DCD12Accident · No injuriesClosedCessna 177RG · Keokuk, IAJul 27, 1974 · N2009Q · Substantial damage NTSB MKC75DCD05Accident · No injuriesClosedSchweizer 2-22 · Greenfield, IAJul 27, 1974 · N91858 · Substantial damage NTSB MKC75AK004Accident · 1 fatalClosedPiper PA-28 · Dubuque, IAJul 22, 1974 · N8020N · Destroyed NTSB MKC75FCD03Accident · 1 fatalClosedCessna 172H · Fort Madison, IAJul 12, 1974 · N2604L · Destroyed NTSB MKC75FCD02Accident · No injuriesClosedPiper PA-24 · Hillsboro, IAJul 7, 1974 · N5180P · Substantial damage NTSB MKC75FCD01Accident · No injuriesClosedPiper PA-25 · Southerland, IAJul 4, 1974 · N6374Z · Substantial damage NTSB MKC74FCD45Accident · Minor injuriesClosedCessna 120 · Keosauqa, IAJun 30, 1974 · N89678 · Destroyed NTSB MKC74DCD44Accident · No injuriesClosedPiper PA-28 · Mason City, IAJun 23, 1974 · N5613U · Substantial damage NTSB MKC74FCD43Accident · No injuriesClosedMooney M20G · Paullina, IAJun 22, 1974 · N6765N · Substantial damage NTSB MKC74FCD42Accident · Serious injuriesClosedCessna 182 · Cedar Rapids, IAJun 20, 1974 · N5715B · Substantial damage NTSB MKC74FCD41Accident · No injuriesClosedPiper PA-28 · Des Moines, IAJun 18, 1974 · N5249W · Substantial damage NTSB MKC74FCD40Accident · Minor injuriesClosedPiper PA-25 · Unionville, IAJun 18, 1974 · N7473Z · Substantial damage NTSB MKC74FCD39Accident · No injuriesClosedCessna 120 · Hampton, IAJun 14, 1974 · N1883N · Substantial damage NTSB MKC74DCD38Accident · No injuriesClosedPiper PA-24 · Urbandale, IAJun 2, 1974 · N8041P · Substantial damage NTSB MKC74DCD37Accident · No injuriesClosedSchweizer 2-33A · Greenfield, IAJun 2, 1974 · N5781S · Substantial damage NTSB MKC74FCD36Accident · Minor injuriesClosedCessna 140 · Logan, IAMay 28, 1974 · N89184 · Destroyed NTSB MKC74FCD35Accident · Serious injuriesClosedPiper PA-28 · Sac City, IAMay 26, 1974 · N55128 · Substantial damage NTSB MKC74DCD34Accident · No injuriesClosedGrumman G-164 · Donnellson, IAMay 25, 1974 · N12LW · Substantial damage NTSB MKC74FCD33Accident · Minor injuriesClosedPiper PA-20 · Red Oak, IAMay 22, 1974 · N1806A · Substantial damage NTSB MKC74FCD32Accident · Minor injuriesClosedPiper PA-25 · Anita, IAMay 22, 1974 · N6023Z · Destroyed NTSB MKC74IK067Incident · No injuriesClosedBeech 99 · Fort Dodge, IAMay 18, 1974 · N7994R · Minor damage NTSB MKC74FCD31Accident · No injuriesClosedBellanca 17-30A · Red Oak, IAMay 5, 1974 · N8262R · 2 aircraft · Substantial damage