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NTSB investigations, 1975, IA

180,611 investigations by the National Transportation Safety Board since 1962: 174,590 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, 1975, 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") = 1975 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\") = 1975
    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") = 1975
  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 MKC76DCD24Accident · No injuriesClosedCessna 177 · Durant, IADec 21, 1975 · N515BC · Substantial damage NTSB MKC76DCD23Accident · No injuriesClosedChampion 7ECA · Mediapolis, IADec 21, 1975 · N3057G · Substantial damage NTSB MKC76AK031Accident · 3 fatalClosedBellanca 17-31A · Garrison, IADec 20, 1975 · N8200R · Destroyed NTSB MKC76FCD22Accident · No injuriesClosedCessna 140 · Des Moines, IADec 6, 1975 · N2465V · Substantial damage NTSB MKC76DCD21Accident · No injuriesClosedPiper PA-28 · Emmetsburg, IANov 17, 1975 · N7186R · Substantial damage NTSB MKC76FCD20Accident · Minor injuriesClosedLuscombe 8A · Missouri Vally, IANov 8, 1975 · N1317K · Substantial damage NTSB MKC76DCD19Accident · No injuriesClosedPiper PA-22 · Marble Rock, IANov 2, 1975 · N9651D · Substantial damage NTSB MKC76FCD18Accident · Minor injuriesClosedCessna 182F · Waukon, IANov 1, 1975 · N3360U · Substantial damage NTSB MKC76FCD17Accident · Serious injuriesClosedCessna 210A · Council Bluffs, IAOct 28, 1975 · N9424X · Substantial damage NTSB MKC76FCD16Accident · Minor injuriesClosedPiper PA-22 · Kalona, IAOct 15, 1975 · N5520Z · Substantial damage NTSB MKC76FCD15Accident · Serious injuriesClosedBeech J35 · Spencer, IAOct 12, 1975 · N4531D · Destroyed NTSB MKC76AK025Accident · 2 fatalClosedRyan ST-3KR · Frederika, IAOct 4, 1975 · N47080 · Destroyed NTSB MKC76FCD14Accident · 1 fatalClosedPiper PA-28 · Montezuma, IASep 28, 1975 · N44657 · Substantial damage NTSB MKC76FCD13Accident · Minor injuriesClosedHiller Acft H-23D · Lakewood, IASep 11, 1975 · N79SW · Destroyed NTSB MKC76FCD12Accident · No injuriesClosedGrum Amer AA-1B · Boone, IASep 10, 1975 · N9650L · Substantial damage NTSB MKC76DCD11Accident · No injuriesClosedCessna 150 · Desmoines, IASep 5, 1975 · N121SS · Substantial damage NTSB MKC76FCD12Accident · No injuriesClosedPiper PA-25 · Lenox, IASep 2, 1975 · N8765L · Substantial damage NTSB MKC76FCD08Accident · No injuriesClosedCessna A188 · Onawa, IASep 1, 1975 · N3560Q · Substantial damage NTSB MKC76DCD09Accident · No injuriesClosedPiper PA-28 · Riceville, IASep 1, 1975 · N555NA · Substantial damage NTSB MKC76FCD07Accident · Minor injuriesClosedBell H-13E · Collins, IAAug 30, 1975 · N29WL · Substantial damage NTSB MKC76FCD06Accident · No injuriesClosedAero Comdr A-9 · Sac City, IAAug 28, 1975 · N7749V · Substantial damage NTSB MKC76FCD05Accident · No injuriesClosedCessna 170A · Centerville, IAAug 23, 1975 · N9223A · Substantial damage NTSB MKC76FCD04Accident · Minor injuriesClosedCessna 182 · Humeston, IAAug 10, 1975 · N6490A · Substantial damage NTSB MKC76FCD03Accident · No injuriesClosedCessna 150 · Lowden, IAJul 26, 1975 · N60932 · Substantial damage NTSB MKC76IK010Incident · No injuriesClosedCessna 150 · Runnells, IAJul 21, 1975 · N18541 · 2 aircraft · No damage NTSB MKC76FCD02Accident · No injuriesClosedPiper PA-28R · Council Bluffs, IAJul 17, 1975 · N4970S · Substantial damage NTSB MKC76IK006Incident · No injuriesClosedConvair 580 · Sioux City, IAJul 9, 1975 · N4801C · Minor damage NTSB MKC76FCD01Accident · Minor injuriesClosedPitts S-1C · Stockton, IAJul 4, 1975 · N7EB · Substantial damage NTSB MKC75FCD48Accident · Minor injuriesClosedCessna 177B · Milton, IAJun 27, 1975 · N34413 · Substantial damage NTSB MKC75FCD47Accident · Serious injuriesClosedAeronca 15AC · Johnston, IAJun 24, 1975 · N1039H · Substantial damage NTSB MKC75FCD46Accident · No injuriesClosedHiller Acft H-23D · Nevada, IAJun 16, 1975 · N79SW · Substantial damage NTSB MKC75FCD44Accident · No injuriesClosedPiper J3C-65 · Clarinda, IAMay 11, 1975 · N42670 · Substantial damage NTSB MKC75FCD45Accident · No injuriesClosedEnstrom F-28A · Nevada, IAMay 8, 1975 · N249Q · Destroyed NTSB MKC75FCD43Accident · No injuriesClosedCessna 177RG · Ames, IAApr 21, 1975 · N117RA · Substantial damage NTSB MKC75FCD42Accident · No injuriesClosedCessna 172 · Calumus, IAApr 13, 1975 · N6383F · Substantial damage NTSB MKC75FCD41Accident · No injuriesClosedPiper PA-30 · Iowa City, IAApr 12, 1975 · N7923Y · Substantial damage NTSB MKC75FCD40Accident · No injuriesClosedCessna 170A · Montezuma, IAApr 5, 1975 · N1493D · Substantial damage NTSB MKC75FCD39Accident · No injuriesClosedBeech B23 · Sully, IAMar 22, 1975 · N9121T · Substantial damage NTSB MKC75AK047Accident · 3 fatalClosedCessna 182 · Davenport, IAMar 5, 1975 · N9950T · Destroyed NTSB MKC75FCD37Accident · Minor injuriesClosedBrantly 305 · Swisher, IAMar 2, 1975 · N16616 · Substantial damage NTSB MKC75DCD38Accident · No injuriesClosedPiper PA-28R · Perry, IAMar 2, 1975 · N41552 · Substantial damage NTSB MKC75DCD36Accident · No injuriesClosedCessna 172 · Wellman, IAFeb 26, 1975 · N3807L · Substantial damage NTSB MKC75AK045Accident · 1 fatalClosedPiper PA-28 · Clinton, IAFeb 26, 1975 · N5389L · Destroyed NTSB MKC75FCD35Accident · Minor injuriesClosedCessna 120 · Dallas Center, IAFeb 22, 1975 · N2279N · Substantial damage NTSB MKC75FCD34Accident · No injuriesClosedCessna 150 · Lawton, IAFeb 19, 1975 · N5953G · Substantial damage NTSB MKC75FCD33Accident · No injuriesClosedMooney M20F · Davenport, IAFeb 9, 1975 · N3498N · Substantial damage NTSB MKC75FCD32Accident · Minor injuriesClosedPiper PA-28 · Estherville, IAJan 16, 1975 · N6671J · Substantial damage NTSB MKC75AK035Accident · 1 fatalClosedBeech 95-58 · Des Moines, IAJan 8, 1975 · N4430A · Destroyed NTSB MKC75PCD31Accident · No injuriesClosedPiper PA-28R · Burlington, IAJan 3, 1975 · N2989R · Substantial damage