NTSB investigations, 1998, MT
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.
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 | 18 |
| 2025 | 24 |
| 2026 | 15 |
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 year(c.\"eventDate\") = 1998
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") = 1998 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 SEA99LA017Accident · No injuriesLimited investigationFinal reportChampion 7ECA · Jardine, MTThe pilot-in-command's failure to maintain adequate clearance with trees and terrain. Contributing factors were unfavorable winds, mountainous terrain and trees.NTSB SEA99LA008Accident · No injuriesLimited investigationFinal reportCessna 172K · Dillon, MTThe student pilot-in-command's failure to maintain directional control. Contributing factors were rough terrain and crosswind conditions.NTSB SEA99LA004Accident · No injuriesLimited investigationFinal reportPiper PA-18-150 · Billings, MTDirectional control was not maintained. Inadequate remedial action was a factor.NTSB SEA99LA003Accident · Minor injuriesLimited investigationFinal reportBeech 99 · Missoula, MTThe pilot-in-command's delayed remedial action in response to the co-pilot's improper landing flare, and the co-pilot's application of excessive (full nose-up) trim during the landing flare as taught in the operator's initial aircrew training program. Factors…NTSB SEA99LA001Accident · Minor injuriesLimited investigationFinal reportAerospatiale SA-315B · Big Sky, MTThe failure of the ground handlers (chokers) to follow procedures, and separation of the tail rotor system. Contributing factors were incorrect long line hook (size), jamming of the hook release, trees and gusty wind conditions.NTSB SEA98LA192Accident · Minor injuriesLimited investigationFinal reportMayala Dragonfly · Avon, MTFailure of the engine crankshaft aft oil seal resulting in the loss of engine oil, and rough terrain during the forced landing.NTSB SEA98LA189Accident · No injuriesLimited investigationFinal reportCessna 172D · Ronan, MTThe pilot's failure to attain adequate airspeed during liftoff from a soft field takeoff. Factors include high density alttiude.NTSB SEA98LA193Accident · No injuriesLimited investigationFinal reportCessna T-50 · Missoula, MTA quick drain was open due to the pilot's inadequate preflight.NTSB SEA98LA195Accident · No injuriesLimited investigationFinal reportEvarts Kitfox IV 1200 · Sula, MTAn excessive brake application by the pilot. Factors included a narrow landing area, the pilot's failure to maintain directional control during a 180-degree taxi turn, and a tailwind.NTSB SEA98LA167Accident · No injuriesLimited investigationFinal reportCessna 180 · Anaconda, MTA ground-loop resulting from the pilot's inadequate remedial action while attempting to correct for an inadvertent loss of directional control during the landing roll. Factors include the loss of directional control and attempting to land with a tailwind.NTSB SEA98LA166Accident · No injuriesLimited investigationFinal reportCessna 175 · Missoula, MTA complete loss of crankcase oil due to a missing oil filler tube followed by the failure of a connecting rod. Factors include encountering a small pine tree during the landing roll.NTSB SEA98FA161Accident · 1 fatalField investigationFinal reportCessna 177 · Red Lodge, MTThe pilot's failure to maintain adequate altitude over, or clearance with, mountainous terrain during night visual flight rules flight. Factors included night lighting conditions and mountainous terrain.NTSB SEA98LA150Accident · Minor injuriesLimited investigationFinal reportPiper PA-18 · Columbus, MTPartial loss of power for undetermined reasons. Factors include the pilot's selection of unsuitable terrain for a precautionary landing.NTSB SEA98LA146Accident · Serious injuriesLimited investigationFinal reportGarlick UH-1H · Libby, MTA failure of the external load cable, which became entangled in the tail rotor.NTSB SEA98LA143Accident · Minor injuriesLimited investigationFinal reportMcCarty Avid Magnum · Kalispell, MTThe pilot's inadequate compensation for the wind conditions. A factor was gusty wind conditions.NTSB SEA98LA142Accident · No injuriesLimited investigationFinal reportSocata Rallye 235E · Kalispell, MTThe pilot-in-command's improper fuel management, resulting in fuel starvation. Related factors were insufficient altitude available for effective remedial action, and lack of suitable terrain for a forced landing.NTSB SEA98LA139Accident · No injuriesLimited investigationFinal reportWsk Pzl Mielec M18B · Hingham, MTRestricted aileron travel for undetermined reasons.NTSB SEA98LA136Accident · No injuriesLimited investigationFinal reportPiper PA-32-300 · Great Falls, MTThe pilot-in-command's improper remedial action and overload of the nose landing gear. Contributing factors were gusty winds and a pilot-induced oscillation (porpoise).NTSB SEA98LA132Accident · Minor injuriesLimited investigationFinal reportGrumman American AA-5B · Chico Hot Sprgs, MTThe pilot-in-command's selection of the wrong runway for takeoff. Factors contributing to the accident were high density altitude, rising terrain and a fence post.NTSB SEA98LA118Accident · No injuriesLimited investigationFinal reportDassault Mystere Falcon 900 · Hamilton, MTPartial failure of the anti-skid brake system due to contamination.NTSB SEA98LA114Accident · No injuriesLimited investigationFinal reportCessna 182P · Chico Hot Spgs., MTThe pilot's inadequate remedial action while attempting to compensate for a change in crosswind velocity. Factors include a crosswind, hills near the runway, and high vegetation (weeds) near the runway.NTSB SEA98LA112Accident · No injuriesLimited investigationFinal reportAviat Husky A-1 · Triple R Ranch, MTThe pilot's misjudgment of distance and his failure to initiate a go-around. A factor was the high density altitude.NTSB SEA98LA110Accident · No injuriesLimited investigationFinal reportAeronca 7-AC · Thompson Falls, MTThe instructor's inadequate remedial action with the application of excessive brake pressure.NTSB SEA98FA105Accident · 1 fatalField investigationFinal reportCessna 340 · Lincoln, MTThe pilot's improper or inadequate use of the aircraft's weather avoidance equipment, resulting in penetration of a Level 4 thunderstorm and subsequent loss of aircraft control from which the pilot did not recover. Factors included a thunderstorm and the…NTSB SEA98FA100Accident · 1 fatalField investigationFinal reportAero Commander 680FL · Helena, MTThe pilot's failure to maintain the correct altitude while turning inbound during a procedure turn to the ILS final approach course. Factors include hilly/mountainous terrain and clouds in the area where the course reversal was performed.NTSB SEA98LA091Accident · 1 fatalLimited investigationFinal reportStephens Vortex · Chinook, MTThe pilot's failure to maintain aircraft control for an undetermined reason.NTSB SEA98FA089Accident · 1 fatalField investigationFinal reportMooney M20A · Canyon Creek, MTThe design stress limits of the aircraft was exceeded. The pilot's inadequate preflight planning/preparation, lack of an instrument rating, poor weather evaluation and low ceilings and mountain obscuration were factors.NTSB SEA98FA078Accident · 2 fatalField investigationFinal reportPiper PA-31T1 · Great Falls, MTThe flight crew's failure to maintain aircraft control.NTSB SEA98LA073Accident · No injuriesLimited investigationFinal reportAero Commander 500-A · Billings, MTFailure of the main landing gear strut outer-body to inner-body needle bearing from the lack of lubrication and the development of corrosion. An inadequate manufacturer's inspection program was a factor.NTSB SEA98LA066Accident · Minor injuriesLimited investigationFinal reportErcoupe 415-D · Colstrip, MTThe pilot's operation of the aircraft above maximum gross weight, resulting in her inability to attain a sustained climb rate after becoming airborne. A factor was high density altitude conditions.NTSB SEA98FA101Accident · 2 fatalField investigationFinal reportPiper PA-46-350P · Bigfork, MTThe pilot's failure to maintain terrain clearance for undetermined reasons. Contributing factors were the mountainous terrain, trees, dark night conditions, clouds and pilot fatigue.NTSB SEA98FA062Accident · 1 fatalField investigationFinal reportMooney M20F · Lodgepole, MTThe pilot's failure to maintain clearance from the terrain after flying into an area of known adverse weather. Factors include low ceilings, fog, snow showers, drizzle, and trees along his intended route.NTSB SEA98LA057Accident · No injuriesLimited investigationFinal reportAeronca 7-EC · Glendive, MTThe pilot's delayed remedial action and his inadvertent entry into a ground loop.NTSB SEA98LA051Accident · No injuriesLimited investigationFinal reportPiper PA-22 · Kalispell, MTThe pilot's failure to maintain adequate crosswind correction during landing. A factor was a crosswind.NTSB SEA98LA049Accident · No injuriesLimited investigationFinal reportCessna 177A · Laurel, MTThe pilot's excessive descent rate on final, and improper recovery from a bounced landing.NTSB SEA98LA037Accident · Minor injuriesLimited investigationFinal reportPiper PA-11 · Bridger, MTThe student pilot's failure to maintain airspeed during a bounced landing recovery.NTSB SEA98LA036Accident · No injuriesLimited investigationFinal reportPiper PA-17 · Bozeman, MTThe pilot's failure to maintain directional control during takeoff.NTSB SEA98LA031Accident · 1 fatalLimited investigationFinal reportCessna 150F · Havre, MTThe student pilot's loss of control after his failure to maintain airspeed. Factors include his lack of total flight experience and incapacitation due to alcohol.