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NTSB investigations, 1976, MT

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

19632026

NTSB investigations, 1976, MT per year, 1963–2026: 2,224 cases
1963	2
1964	78
1965	73
1966	87
1967	82
1968	61
1969	56
1970	67
1971	55
1972	46
1973	49
1974	59
1975	61
1976	60
1977	61
1978	57
1979	50
1980	46
1981	52
1982	57
1983	37
1984	38
1985	42
1986	34
1987	27
1988	31
1989	26
1990	32
1991	28
1992	29
1993	25
1994	29
1995	26
1996	23
1997	29
1998	38
1999	24
2000	28
2001	18
2002	25
2003	23
2004	29
2005	21
2006	33
2007	28
2008	20
2009	16
2010	14
2011	21
2012	17
2013	29
2014	21
2015	20
2016	18
2017	12
2018	14
2019	15
2020	19
2021	18
2022	14
2023	16
2024	18
2025	24
2026	16

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") = 1976 AND c."eventStateOrRegion" = 'MT' 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\") = 1976
    AND c.\"eventStateOrRegion\" = 'MT' 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") = 1976
  AND c."eventStateOrRegion" = 'MT' 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 SEA77FTA05Accident · No injuriesClosedCessna 170A · Ashland, MTDec 18, 1976 · N9142A · Substantial damage NTSB SEA77DTI05Accident · No injuriesClosedPiper PA-22 · Seeley Lake, MTDec 15, 1976 · N6928D · Substantial damage NTSB SEA77FTA04Accident · No injuriesClosedPiper PA-18A · Malta, MTDec 12, 1976 · N3087Z · Substantial damage NTSB SEA77DTA03Accident · No injuriesClosedLuscombe 8E · Hinsdale, MTDec 10, 1976 · N1203B · Substantial damage NTSB SEA77DTI04Accident · No injuriesClosedCessna 170B · W.Sulphur Spgs, MTDec 8, 1976 · N2288D · Substantial damage NTSB SEA77FA006Accident · 1 fatalClosedBellanca 7GCBC · Geyser, MTNov 21, 1976 · N36177 · Destroyed NTSB SEA77FTA02Accident · No injuriesClosedCessna 172B · Circle, MTNov 14, 1976 · N7536X · Substantial damage NTSB SEA77FTI03Accident · No injuriesClosedCessna 180H · Dillon, MTNov 11, 1976 · N7912V · Substantial damage NTSB SEA77FTI02Accident · No injuriesClosedCessna 172 · Whitefish, MTNov 7, 1976 · N8746B · Substantial damage NTSB SEA77FTI01Accident · No injuriesClosedBell 47J-2 · Quake Lake, MTOct 31, 1976 · N2835B · Substantial damage NTSB SEA77FA004Accident · 1 fatalClosedBeech A36 · Chester, MTOct 24, 1976 · N6803S · Destroyed NTSB SEA77FA003Accident · 1 fatalClosedBellanca 8KCAB · Billings, MTOct 21, 1976 · N11705 · Destroyed NTSB SEA76AS078Accident · 1 fatalClosedPiper PA-18 · Zurich, MTSep 24, 1976 · N8966C · Destroyed NTSB SEA76AS077Accident · 2 fatalClosedCessna A185F · Geraldine, MTSep 15, 1976 · N53075 · Destroyed NTSB SEA76FTI38Accident · 1 fatalClosedPiper PA-18A · Helena, MTAug 31, 1976 · N1189C · Substantial damage NTSB SEA76FTA29Accident · Minor injuriesClosedCessna 185 · Ekalaka, MTAug 26, 1976 · N9942X · Destroyed NTSB SEA76DTI37Accident · Minor injuriesClosedPiper PA-28 · Turner, MTAug 16, 1976 · N9051J · Substantial damage NTSB SEA76DTI36Accident · Minor injuriesClosedPiper PA-18 · Condon, MTAug 11, 1976 · N4380Z · Substantial damage NTSB SEA76DTA28Accident · No injuriesClosedPiper PA-28 · Powderville, MTAug 5, 1976 · N5827W · Substantial damage NTSB SEA76AS067Accident · No injuriesClosedDehavilland DHC-6 · Havre, MTAug 3, 1976 · N980FL · No damage NTSB SEA76AS065Accident · 3 fatalClosedBeech S35 · Billings, MTAug 1, 1976 · N8681Q · Destroyed NTSB SEA76FTA27Accident · Serious injuriesClosedCessna 170 · Fishtail, MTJul 31, 1976 · N2541V · Destroyed NTSB SEA76FTA26Accident · Serious injuriesClosedCessna 150L · Miles City, MTJul 30, 1976 · N11547 · Destroyed NTSB SEA76DTI34Accident · Serious injuriesClosedBellanca 7ECA · Alder, MTJul 29, 1976 · N8662 · Substantial damage NTSB SEA76FTI33Accident · No injuriesClosedCessna 182 · Seeley Lake, MTJul 25, 1976 · N7251E · Substantial damage NTSB SEA76AS064Accident · 1 fatalClosedPiper PA-28 · Butte, MTJul 25, 1976 · N6825W · Destroyed NTSB SEA76FTI35Accident · No injuriesClosedBeech 95-55 · Ennis, MTJul 24, 1976 · N9339Y · Substantial damage NTSB SEA76FTI32Accident · No injuriesClosedCessna 150D · Lincoln, MTJul 14, 1976 · N19422 · Substantial damage NTSB SEA76AS062Accident · 4 fatalClosedCessna 182H · Kalispell, MTJul 14, 1976 · N2087X · Destroyed NTSB SEA76FTI31Accident · 2 fatalClosedPiper PA-18 · Helena, MTJul 13, 1976 · N7490L · Destroyed NTSB SEA76FTI30Accident · Minor injuriesClosedBellanca 7GCBC · Inverness, MTJul 6, 1976 · N88310 · Substantial damage NTSB SEA76DTI29Accident · No injuriesClosedCallair A-9 · Pendroy, MTJul 6, 1976 · N9667Z · Substantial damage NTSB SEA77FTA01Accident · No injuriesClosedCessna 185 · Glasgow, MTJun 10, 1976 · N1688R · Substantial damage NTSB SEA76DTA24Accident · No injuriesClosedAero Comdr 600S2R · Scobey, MTJun 10, 1976 · N4901X · Substantial damage NTSB SEA76FTA25Accident · No injuriesClosedPiper PA-25 · Forsyth, MTJun 9, 1976 · N7611Z · Substantial damage NTSB SEA76FTA23Accident · No injuriesClosedCessna 205 · Fishtail, MTJun 9, 1976 · N8481Z · Substantial damage NTSB SEA76FTA22Accident · No injuriesClosedCessna 177 · Hardin, MTJun 5, 1976 · N34525 · Substantial damage NTSB SEA76AS055Accident · 1 fatalClosedPiper PA-23 · Hamilton, MTJun 3, 1976 · N6507Y · Destroyed NTSB SEA76DTA21Accident · No injuriesClosedCessna 172 · Harlowtown, MTMay 31, 1976 · N4244L · Substantial damage NTSB SEA76AS052Accident · 2 fatalClosedPiper J3C-65 · Rock Springs, MTMay 30, 1976 · N6519H · Destroyed NTSB SEA76FTI27Accident · No injuriesClosedCessna 188B · Three Forks, MTMay 17, 1976 · N4810Q · Substantial damage NTSB SEA76IS046Incident · 1 fatalClosedDouglas DC-10 · Billings, MTMay 13, 1976 · N1810U · No damage NTSB SEA76FTI26Accident · Minor injuriesClosedCessna U206F · Deer Lodge, MTMay 8, 1976 · N2515P · Destroyed NTSB SEA76DTI25Accident · No injuriesClosedCessna 150 · Three Forks, MTMay 5, 1976 · N18119 · Substantial damage NTSB SEA76DTI24Accident · No injuriesClosedCessna 210 · Stevensville, MTApr 17, 1976 · N59130 · Substantial damage NTSB SEA76FTA20Accident · No injuriesClosedCessna 185 · Glendive, MTApr 15, 1976 · N70283 · Substantial damage NTSB SEA76DTI28Accident · No injuriesClosedCessna A188B · Shelby, MTApr 15, 1976 · C-GWWU · Substantial damage NTSB SEA76DTI23Accident · No injuriesClosedGrumman G-164A · Chester, MTApr 9, 1976 · N5338 · Substantial damage NTSB SEA76FTA19Accident · Serious injuriesClosedCessna 150 · Shawmut, MTApr 2, 1976 · N7836E · Destroyed NTSB SEA76FTI22Accident · Minor injuriesClosedPiper PA-24 · Thompson Falls, MTMar 26, 1976 · N5482P · Substantial damage