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NTSB investigations, 1971, 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, 1971, 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") = 1971 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\") = 1971
    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") = 1971
  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 MKC72AK041Accident · 2 fatalClosedPiper PA-28R · Davenport, IADec 25, 1971 · N7477J · Destroyed NTSB MKC72FCD49Accident · Serious injuriesClosedMitsubishi MU-2B · Lemars, IADec 22, 1971 · N251M · No damage NTSB MKC72AK038Accident · 1 fatalClosedErco 415C · Lake Mills, IADec 19, 1971 · N93703 · Destroyed NTSB MKC72DCD48Accident · No injuriesClosedPiper PA-20 · Woodbine, IADec 10, 1971 · N7044K · Substantial damage NTSB MKC73DCD19Accident · No injuriesClosedAeronca 7AC · Decorah, IADec 4, 1971 · N85286 · Substantial damage NTSB MKC72DCD47Accident · No injuriesClosedPiper PA-32 · Dubuque, IANov 17, 1971 · N4139W · Substantial damage NTSB MKC72FCD44Accident · No injuriesClosedPiper PA-28 · Newton, IANov 14, 1971 · N6649J · Substantial damage NTSB MKC72DCD45Accident · No injuriesClosedPiper PA-32 · Ida Grove, IANov 14, 1971 · N4063R · Substantial damage NTSB MKC72DCD46Accident · No injuriesClosedCessna 140 · Chillicothe, IANov 7, 1971 · N1621V · Substantial damage NTSB MKC72DCD43Accident · Minor injuriesClosedCessna 140 · Mapleton, IANov 6, 1971 · N89093 · Substantial damage NTSB MKC72DCD42Accident · No injuriesClosedCessna 170A · Marion, IAOct 31, 1971 · N9145A · Substantial damage NTSB MKC72DCD40Accident · No injuriesClosedAero Comdr 500-B · Waterloo, IAOct 18, 1971 · N553HH · Substantial damage NTSB MKC72FCD39Accident · No injuriesClosedAeronca 0-58B · Des Moines, IAOct 17, 1971 · N48295 · Substantial damage NTSB MKC72DCD41Accident · No injuriesClosedPiper PA-12 · Harlan, IAOct 15, 1971 · N7982H · Substantial damage NTSB MKC72DCD38Accident · No injuriesClosedPiper PA-32 · Marshalltown, IAOct 13, 1971 · N4031R · Substantial damage NTSB MKC72FCD34Accident · Minor injuriesClosedCessna 150E · Spirit Lake, IAOct 10, 1971 · N3967U · Destroyed NTSB MKC72DCD36Accident · No injuriesClosedCessna 172 · Independence, IAOct 10, 1971 · N8283U · Substantial damage NTSB MKC72FCD35Accident · Serious injuriesClosedLuscombe 8E · Osage, IAOct 2, 1971 · N1971K · Destroyed NTSB MKC72DCD37Accident · No injuriesClosedBeech 35 · Algona, IAOct 2, 1971 · N3922N · Substantial damage NTSB MKC72FCD32Accident · Serious injuriesClosedBeech V35A · Ida Grove, IASep 30, 1971 · N7761R · Destroyed NTSB MKC72DCD31Accident · No injuriesClosedCessna 182G · Des Moines, IASep 13, 1971 · N3240S · Substantial damage NTSB MKC72FGD29Accident · No injuriesClosedAmer Avco AA-1 · Blakesburg, IASep 5, 1971 · N5973L · Substantial damage NTSB MKC72DCD33Accident · No injuriesClosedPiper PA-28 · Osage, IASep 5, 1971 · N4203J · Substantial damage NTSB MKC72FCD28Accident · No injuriesClosedCessna 172 · Blakesburg, IASep 4, 1971 · N2517Y · 2 aircraft · Substantial damage NTSB MKC72DCD30Accident · No injuriesClosedCessna 150G · Knoxville, IAAug 25, 1971 · N3012S · Substantial damage NTSB MKC72DCD26Accident · No injuriesClosedBeech C35 · Sac City, IAAug 22, 1971 · N1890D · Substantial damage NTSB MKC72AK017Accident · No injuriesClosedBeech F-35 · Whittemore, IAAug 22, 1971 · N4280B · Substantial damage NTSB MKC72DCD27Accident · No injuriesClosedCessna 150G · Calamus, IAAug 21, 1971 · N4738X · Substantial damage NTSB MKC72DCD25Accident · No injuriesClosedAeronca 7AC · Monticello, IAAug 16, 1971 · N84230 · Substantial damage NTSB MKC72DCD24Accident · No injuriesClosedHughes 269A · Nevada, IAAug 13, 1971 · N8892F · Substantial damage NTSB MKC72DCD22Accident · No injuriesClosedPiper J3C-65 · Bennett, IAAug 13, 1971 · N42935 · Substantial damage NTSB MKC72DCD21Accident · No injuriesClosedGrumman G-164 · Albia, IAAug 13, 1971 · N549Y · Substantial damage NTSB MKC72DCD23Accident · No injuriesClosedPiper PA-25 · Manchester, IAAug 12, 1971 · N7230Z · Substantial damage NTSB MKC72DCD20Accident · No injuriesClosedLuscombe 8F · Vinton, IAAug 12, 1971 · N9922C · Substantial damage NTSB MKC72FCD18Accident · 1 fatalClosedPiper PA-18 · Webster City, IAAug 11, 1971 · N1731A · Destroyed NTSB MKC72FCD17Accident · Serious injuriesClosedTaylorcraft BL-65 · Ackley, IAAug 8, 1971 · N36214 · Destroyed NTSB MKC72AK009Accident · 1 fatalClosedCessna 172 · Bridgewater, IAAug 5, 1971 · N6389E · Destroyed NTSB MKC72DCD19Accident · No injuriesClosedPiper PA-25 · Olin, IAAug 4, 1971 · N7036Z · Substantial damage NTSB MKC72DCD16Accident · No injuriesClosedPiper PA-24 · Estherville, IAAug 2, 1971 · N6203P · Substantial damage NTSB MKC72DCD15Accident · No injuriesClosedCessna 150 · Knoxville, IAJul 31, 1971 · N561QL · Substantial damage NTSB MKC72FCD11Accident · Serious injuriesClosedPiper PA-30 · Storm Lake, IAJul 28, 1971 · N7409Y · Destroyed NTSB MKC72DCD14Accident · No injuriesClosedCessna 172K · Lowden, IAJul 23, 1971 · N78842 · Substantial damage NTSB MKC72FCD08Accident · No injuriesClosedBell 47-G5 · New Market, IAJul 20, 1971 · N4705R · Destroyed NTSB MKC72DCD12Accident · No injuriesClosedPiper PA-25 · Oelwein, IAJul 19, 1971 · N6215Z · Substantial damage NTSB MKC72FCD10Accident · No injuriesClosedBrantly B-2 · Whiting, IAJul 17, 1971 · N5988X · No damage NTSB MKC72DCD13Accident · No injuriesClosedPiper PA-30 · Davenport, IAJul 16, 1971 · N8137Y · Substantial damage NTSB MKC72DCD06Accident · Minor injuriesClosedPiper PA-18 · Thayer, IAJul 15, 1971 · N4430Z · Substantial damage NTSB MKC72DGD40Accident · No injuriesClosedFournier RF4D · Sibley, IAJul 12, 1971 · N7752 · Substantial damage NTSB MKC72FCD03Accident · No injuriesClosedCessna 177 · Independence, IAJul 11, 1971 · N29462 · Substantial damage NTSB MKC72FCD05Accident · No injuriesClosedBrantly B2B · Spencer, IAJul 9, 1971 · N2161U · Substantial damage