Final NTSB investigations, MT
180,604 investigations by the National Transportation Safety Board since 1962: 174,583 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.
Cases per year
| 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 | 17 |
| 2025 | 12 |
| 2026 | 4 |
Where
Open the mapLatest cases
Query with SQL
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 c.\"eventStateOrRegion\" = 'MT' AND c.\"eventCountry\" = 'USA'
AND c.\"completionStatus\" = 'Completed'
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 c."eventStateOrRegion" = 'MT' AND c."eventCountry" = 'USA' AND c."completionStatus" = 'Completed' 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 WPR26LA280Accident · Serious injuriesClass 4 · LimitedFinal reportHarmon Rocket II · Glasgow, MTThe pilot’s inadvertent selection of the fuel selector valve to the OFF position resulted in a total loss of engine power due to fuel starvation and subsequent forced landing to a field.NTSB WPR26LA146Accident · No injuriesClass 4 · LimitedFinal reportBell Helicopter Textron 206L-1 · Chimney Rock, MTThe pilot’s failure to maintain adequate clearance from the terrain while performing a low altitude circling takeoff maneuver, which resulted in a dynamic rollover.NTSB WPR26LA105Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-20 · Three Forks, MTThe pilot’s failure to maintain directional during the landing roll with a variable wind.NTSB WPR26LA099Accident · No injuriesClass 4 · LimitedFinal reportBell Helicopter Textron Canada BHT407 · Libby, MTThe pilot's failure to maintain clearance from a light post during landing.NTSB WPR26LA055Accident · No injuriesClass 4 · LimitedFinal reportMaule M-5-210C · Eureka, MTThe pilot’s failure to maintain directional control during landing in crosswind conditions. Contributing to the accident was the pilot's lack of recent flight experience.NTSB WPR25LA271Accident · Minor injuriesClass 4 · LimitedFinal reportNaval Aircraft Factory N3N-3 · Red Lodge, MTThe pilot’s failure to maintain clearance from obstacles during an aborted landing. Contributing to the accident was the high density altitude weather condition.NTSB WPR25LA251Accident · No injuriesClass 4 · LimitedFinal reportSocata TBM 700 · Kalispell, MTThe pilot’s unstable approach to the runway, which resulted in an aerodynamic stall at low altitude and impact with terrain.NTSB WPR25LA243Accident · No injuriesClass 4 · LimitedFinal reportCessna 172N · Ronan, MTThe student pilot's inadequate landing flare and recovery from a bounced landing.NTSB WPR25LA239Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Ponderosa Pines, MTThe pilot’s improper pedal application during an approach to a hover.NTSB WPR25LA221Accident · Minor injuriesClass 4 · LimitedFinal reportBeech B35 · Helena, MTThe pilot’s failure to properly configure the airplane during a go-around which resulted in the airplane exceeding its critical angle of attack and an aerodynamic stall at a low altitude.NTSB WPR25LA194Accident · No injuriesClass 4 · LimitedFinal reportBellanca 7GCBC · Helena, MTThe pilot’s failure to maintain directional control of the airplane during landing.NTSB WPR25LA176Accident · No injuriesClass 4 · LimitedFinal reportCessna 182M · Willow Creek, MTThe pilot’s inadequate preflight inspection and fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.NTSB WPR25LA165Accident · No injuriesClass 4 · LimitedFinal reportWeatherly 620B · Lewiston, MTThe pilot’s failure to maintain clearance from terrain while maneuvering at a low altitude.NTSB WPR25LA151Accident · No injuriesClass 4 · LimitedFinal reportStinson 108-3 · Port of Del Bonita, MTThe pilot’s loss of directional control while landing in gusting wind conditions.NTSB WPR25LA122Accident · No injuriesClass 3 · LimitedFinal reportBeech C90A · Helena, MTThe failure of the left main landing gear to fully extend and lock as a result of broken downlock switch wires and the failure of the pilots to complete the manual gear extension checklist.NTSB WPR25LA074Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-18-150 · Red Rock, MTThe pilot's failure to maintain directional control during takeoff, which resulted in an impact with deep snow and vegetation.NTSB WPR25LA047Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Lewistown, MTThe pilot’s inadvertent impact with a rock during a landing on a grass strip.NTSB WPR25LA043Accident · No injuriesClass 4 · LimitedFinal reportCharlie Guinn CCK-1865 · Lewiston, MTThe pilot’s failure to maintain directional control in a gusting tailwind, which resulted in an impact with a tree.NTSB WPR24LA307Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Basin, MTThe pilot’s decision to continue performing a high-performance takeoff in a full throttle and low-rotor-rpm condition, which resulted in a loss of control and subsequent impact with terrain.NTSB WPR24LA271Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-18-150 · Manhattan, MTA total loss of engine power due to carburetor icing.NTSB WPR24FA270Accident · 3 fatalClass 3 · FieldFinal reportCessna 182K · Augusta, MTThe non-instrument-rated pilot’s decision to continue a visual flight rules flight into a rugged mountain area in deteriorating weather conditions, which resulted in impact with terrain.NTSB WPR24FA238Accident · 1 fatalClass 3 · FieldFinal reportAir Tractor AT-802A · Helena, MTThe pilot’s loss of situational awareness during the water scoop due to task overload while operating in a multi-airplane tactical firefighting environment, which resulted in the pilot’s failure to maintain directional control and the airplane’s collision…NTSB WPR24LA204Accident · Minor injuriesClass 4 · LimitedFinal reportMaule MXT-7-180 · Winifred, MTThe pilot’s inadvertent excessive application of brakes, which resulted in a nose over.NTSB WPR24LA180Accident · No injuriesClass 4 · LimitedFinal reportRepublic RC-3 · Butte, MTThe pilot’s failure to maintain control of the airplane during the takeoff with a gusty left quartering crosswind.NTSB WPR24LA192Accident · No injuriesClass 4 · LimitedFinal reportSIAI Marchetti SM. 1019 · Twin Bridges, MTThe binding of the parking brake cable, which resulted in un-commanded brake application during the landing roll and subsequent nose over.NTSB WPR24FA150Accident · 2 fatalClass 3 · FieldFinal reportPiper PA-18-150 · Thurlow, MTThe pilot’s exceedance of the airplane’s critical angle of attack while maneuvering at low altitude, resulting in an aerodynamic stall and subsequent impact with terrain. Contributing to the accident was the pilot’s distraction by his cell phone use while…NTSB WPR24LA152Accident · No injuriesClass 4 · LimitedFinal reportCessna 182H · Three Forks, MTThe pilot’s inadequate preflight inspection, which resulted in an attempted departure with the flight control lock device installed, and subsequent nose landing gear collapse.NTSB WPR24LA140Accident · No injuriesClass 4 · LimitedFinal reportMichael Milburn Vans RV8 · Cascade, MTThe pilot’s failure to maintain aircraft control during landing roll.NTSB WPR24FA132Accident · 1 fatalClass 3 · FieldFinal reportBell 206-L4 · Anaconda, MTA total loss of engine power due to a loss of cooling oil to the turbine-to-compressor coupling shaft and subsequent fracture of the shaft at an altitude too low for the pilot to complete a successful autorotation. Contributing to the accident was carbon…NTSB WPR24LA109Accident · No injuriesClass 3 · LimitedFinal reportRaytheon B200 · Billings, MTThe pilot's improper engine start, resulting in the engine starters remaining engaged and the generators not being activated, which led to the discharge of the airplane’s battery and subsequent total electrical failure after takeoff. Contributing to the…NTSB ENG24LA012IncidentClass 3 · LimitedFinal reportBritish Aerospace BAE 146 Series 200A · Missoula, MTThe use of a new long term fire retardant with a chemical composition incompatible with the retardant previously in use for the integration-operational field evaluation without adequate testing and qualification.NTSB WPR24LA090Accident · No injuriesClass 4 · LimitedFinal reportEnstrom 280FX · Lewistown, MTThe pilot’s failure to maintain clearance from terrain. Contributing to the accident was the pilot’s encounter with low light conditions and snow-covered terrain.NTSB WPR24LA071Accident · Minor injuriesClass 4 · LimitedFinal reportLearjet 55 · Livingston, MTThe flight crew’s decision to land on a snow-covered runway with a tailwind, resulting in a runway excursion and subsequent impact with terrain. Contributing to the accident, was the failure of the airport authority to plow the runway.NTSB WPR24LA069Accident · No injuriesClass 4 · LimitedFinal reportTaylorcraft BC12-D · Whitefish, MTThe failure of the airport authorities to renew the airport closure NOTAM for the airport. Contributing to the accident, was the pilot’s inability to see the runway closure sign.NTSB WPR24LA048Accident · Minor injuriesClass 4 · LimitedFinal reportFlight Design Ctls · Hungry Horse, MTThe pilot's inadequate fuel planning and improper in-flight decision-making, which resulted in a total loss of engine power due to fuel exhaustion.NTSB WPR23LA331Accident · No injuriesClass 4 · LimitedFinal reportBeech N35 · Ennis, MTThe pilot's failure to extend the landing gear before landing.NTSB WPR23LA311Accident · Serious injuriesClass 4 · LimitedFinal reportPiper J3C-65 · Miles City, MTThe pilot's failure to maintain control of the airplane while landing on unimproved terrain.NTSB WPR23LA307Accident · No injuriesClass 3 · LimitedFinal reportBoeing A75N1(PT17) · Red Lodge, MTA partial loss of engine power during the initial climb out due to improper maintenance of the magneto.NTSB WPR23FA286Accident · 1 fatalClass 3 · FieldFinal reportRisen 915 iS · Glendive, MTThe pilot’s failure to maintain airspeed, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall/spin.NTSB WPR23LA284Accident · No injuriesClass 4 · LimitedFinal reportBoeing A75N1 · Red Lodge, MTThe pilot’s loss of directional control during landing with wind gusts, which resulted in a ground loop and collision with a fence.NTSB WPR23LA280Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-12S · Kalispell, MTThe pilot's failure to maintain directional control of the airplane during landing with a crosswind.NTSB WPR23LA281Accident · Serious injuriesClass 4 · LimitedFinal reportSix Chuter SR7 · Hamilton, MTThe pilot’s failure to maintain directional control during takeoff and subsequent impact with a tree.NTSB WPR23LA266Accident · Minor injuriesClass 4 · LimitedFinal reportPiper PA-12 · Judith Gap, MTThe pilot's decision to take off on a soft field that exceeded the performance capabilities of the airplane, which resulted in an impact with a pole and terrain.NTSB WPR23LA254Accident · Minor injuriesClass 4 · LimitedFinal reportMaule MX7-180C · Belgrade, MTThe pilot’s failure to maintain directional control during landing with a quartering tailwind, which resulted in a runway excursion and nose over.NTSB WPR23FA244Accident · 1 fatalClass 3 · FieldFinal reportCurtiss Wright P-40E · Hamilton, MTA loss of engine power for undetermined reasons.NTSB WPR23LA269Accident · Minor injuriesClass 3 · LimitedFinal reportCSP Leasing MTO Sport · Gardiner, MTFailure of the rudder/nosewheel steering system for reasons that could not be determined, which resulted in loss of yaw control and a subsequent rollover.NTSB WPR23LA175Accident · Minor injuriesClass 3 · LimitedFinal reportCessna P337H · Laurel, MTA partial loss of engine power to the rear engine resulting from cylinder detonation for undetermined reasons, which resulted in a forced landing and impact with terrain.NTSB WPR23LA354Accident · No injuriesClass 4 · LimitedFinal reportKerr John Hatz Classic · Ennis, MTThe pilot’s failure to maintain directional control during the landing roll which resulted in a ground-loop.NTSB WPR23LA087Accident · No injuriesClass 4 · LimitedFinal reportRaytheon BE-200 · Poplar, MTThe pilot’s failure to maintain adequate airspeed and descent rate during the landing approach, which resulted in an impact with terrain short of the runway threshold.NTSB WPR23LA065Accident · No injuriesClass 4 · LimitedFinal reportPiper PA42 · Lewistown, MTThe pilot’s improper landing flare, which resulted in a hard landing. Contributing to the accident was the out of service visual glideslope indicator and snow obscuring the runway markings.