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NTSB investigations, 1977, 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, 1977, 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") = 1977 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\") = 1977
    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") = 1977
  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 MKC78DCD10Accident · Minor injuriesClosedCessna 150 · Tipton, IADec 22, 1977 · N66055 · Substantial damage NTSB MKC78FA014Accident · 1 fatalClosedPiper PA-28R · Waukon, IADec 16, 1977 · N44988 · Destroyed NTSB MKC78FA013Accident · 2 fatalClosedPiper PA-34 · Davenport, IADec 14, 1977 · N1634H · Destroyed NTSB MKC78FA008Accident · 2 fatalClosedBellanca 8KCAB · Inwood, IANov 28, 1977 · N12PG · Destroyed NTSB MKC78FCD09Accident · Minor injuriesClosedPiper PA-31T · Des Moines, IAOct 26, 1977 · N35RT · Substantial damage NTSB MKC78FCD08Accident · Serious injuriesClosedCessna 172M · Lamoni, IAOct 21, 1977 · N21210 · Substantial damage NTSB MKC78FCD06Accident · No injuriesClosedCessna 140 · Ankeny, IAOct 19, 1977 · N2419V · Substantial damage NTSB MKC78DCD07Accident · Minor injuriesClosedCessna 150 · Des Moines, IAOct 14, 1977 · N714EF · Substantial damage NTSB MKC78FCD03Accident · Serious injuriesClosedRyan Navion · Moulton, IAOct 13, 1977 · N4801K · Destroyed NTSB MKC78DCD04Accident · Minor injuriesClosedErco 415C · Alton, IAOct 13, 1977 · N87272 · Substantial damage NTSB MKC78DCD01Accident · No injuriesClosedBeech B33 · Des Moines, IAOct 5, 1977 · N3EM · Substantial damage NTSB MKC77DCD49Accident · No injuriesClosedPiper PA-12 · Denison, IASep 13, 1977 · N2758M · Substantial damage NTSB MKC77DCD48Accident · Minor injuriesClosedPiper PA-28 · Lamoni, IASep 11, 1977 · N2945Q · Substantial damage NTSB MKC77DCD47Accident · No injuriesClosedBeech B19 · Akron, IASep 11, 1977 · N9174S · Substantial damage NTSB MKC77DCD46Accident · No injuriesClosedPiper PA-28 · Indianola, IASep 9, 1977 · N453 · Substantial damage NTSB MKC77DCD45Accident · No injuriesClosedCessna 177 · Rock Rapids, IASep 7, 1977 · N30407 · Substantial damage NTSB MKC77FCD43Accident · No injuriesClosedPiper PA-24 · Blakesburg, IASep 4, 1977 · N5071P · Substantial damage NTSB MKC77FCD44Accident · No injuriesClosedCessna 210M · Knoxville, IASep 1, 1977 · N732WX · Substantial damage NTSB MKC77DCD42Accident · No injuriesClosedPiper PA-28 · Burlington, IAAug 27, 1977 · N15203 · Substantial damage NTSB MKC77FCD41Accident · Serious injuriesClosedBell 47G5 · Denison, IAAug 23, 1977 · N4095G · Destroyed NTSB MKC77DCD40Accident · No injuriesClosedPiper PA-22 · Pocahontas, IAAug 12, 1977 · N2371A · Substantial damage NTSB MKC77DCD39Accident · No injuriesClosedPiper PA-24 · Council Bluffs, IAAug 10, 1977 · N5368P · Substantial damage NTSB MKC77FCD38Accident · No injuriesClosedBellanca 7GCBC · Fort Madison, IAAug 2, 1977 · N88050 · Substantial damage NTSB MKC77FCD36Accident · No injuriesClosedBeech 23 · Runnells, IAJul 29, 1977 · N9213S · Substantial damage NTSB MKC77FCD35Accident · No injuriesClosedCessna 170B · Dubuque, IAJul 21, 1977 · N2788D · Substantial damage NTSB MKC77FCD34Accident · No injuriesClosedPiper PA-28 · New Liberty, IAJul 20, 1977 · N5508U · Substantial damage NTSB MKC77DCD32Accident · No injuriesClosedPiper PA-25 · Minden, IAJul 16, 1977 · N4826Y · Substantial damage NTSB MKC77FCD35Accident · Serious injuriesClosedGrumman G-164 · Boone, IAJul 15, 1977 · N12LW · Destroyed NTSB MKC77FCD30Accident · No injuriesClosedBeech 35 · Clinton, IAJul 13, 1977 · N3191V · Substantial damage NTSB MKC77FCD29Accident · No injuriesClosedHiller Acft 12E · Reasoner, IAJul 11, 1977 · N3351F · Substantial damage NTSB MKC77FCD27Accident · 1 fatalClosedPiper PA-25 · Woodbine, IAJul 6, 1977 · N8800L · Destroyed NTSB MKC77FCD33Accident · No injuriesClosedAmer Avco AA-5A · Osage, IAJul 4, 1977 · N9580U · Substantial damage NTSB MKC77FCD25Accident · Minor injuriesClosedErco 415C · Runnells, IAJul 4, 1977 · N99259 · Destroyed NTSB MKC77FCD28Accident · No injuriesClosedAmer Avco AA-5A · Boone, IAJul 3, 1977 · N9873U · Substantial damage NTSB MKC77FCD26Accident · No injuriesClosedCessna 421 · Cedar Rapids, IAJul 1, 1977 · N4048L · Substantial damage NTSB MKC77DCD37Accident · No injuriesClosedHughes 269B · Hawkeye, IAJun 29, 1977 · N9357F · Substantial damage NTSB MKC77DCD24Accident · No injuriesClosedBellanca 7GCAA · Moulton, IAJun 27, 1977 · N8739 · Substantial damage NTSB MKC77FCD22Accident · No injuriesClosedGrum Amer AA5B · Lake Mills, IAJun 20, 1977 · N74864 · Substantial damage NTSB MKC77FA027Accident · 2 fatalClosedCessna 172 · Cedar Rapids, IAJun 18, 1977 · N5172F · Substantial damage NTSB MKC77FCD23Accident · 1 fatalClosedMorris Cass 111M · Winterset, IAJun 17, 1977 · N90RM · Destroyed NTSB MKC77FCD21Accident · No injuriesClosedCessna 206 · Ames, IAMay 25, 1977 · N188AS · Substantial damage NTSB MKC77FCD20Accident · No injuriesClosedPiper PA-28 · Oskaloosa, IAMay 22, 1977 · N4646J · Substantial damage NTSB MKC77FCD19Accident · Serious injuriesClosedCessna 150M · Council Bluffs, IAMay 14, 1977 · N66248 · Destroyed NTSB MKC77FCD18Accident · Serious injuriesClosedPiper PA-28 · Iowa City, IAMay 12, 1977 · N5177S · Substantial damage NTSB MKC77FCD17Accident · No injuriesClosedBeech E55 · Davenport, IAMay 5, 1977 · N1587W · Substantial damage NTSB MKC77FCD16Accident · No injuriesClosedCessna 150 · West Union, IAMay 1, 1977 · N19379 · Substantial damage NTSB MKC77FCD15Accident · No injuriesClosedPiper PA-18 · Ankeny, IAApr 1, 1977 · N4367Z · Substantial damage NTSB MKC77FCD14Accident · Serious injuriesClosedPiper PA-24 · Spirit Lake, IAMar 20, 1977 · N8623P · Substantial damage NTSB MKC77FA017Accident · 3 fatalClosedCessna T210L · Atkins, IAMar 19, 1977 · N2231S · Destroyed NTSB MKC77FCD13Accident · Minor injuriesClosedCessna 150H · Belmond, IAMar 6, 1977 · N22595 · Substantial damage