NTSB investigations, MT
6 cases where the defining event was Unknown or undetermined.
Cases per year
| 2011 | 1 |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2025 | 1 |
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.\"mKey\" IN (SELECT e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.\"isDefiningEvent\" AND e.\"tier2Number\" = '000')
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."mKey" IN (SELECT e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e."isDefiningEvent" AND e."tier2Number" = '000') 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 WPR25FA289Accident · 1 fatalClass 3 · FieldPreliminary reportMurphy SR3500 · Bigfork, MTOn September 19, 2025, about 1205 mountain daylight time, an experimental amateur built Murphy SR3500, N62ZT, was destroyed when it was involved in an accident near Bigfork, Montana. The pilot was fatally injured. The airplane was operated as a Title 14 Code…NTSB WPR22LA313Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-30 · St Ignatius, MTA partial loss of power during takeoff for undetermined reasons.NTSB WPR21LA032Accident · 1 fatalClass 3 · LimitedFinal reportCessna 172 · Billings, MTThe pilot’s failure to maintain the proper descent glide path while on final approach for reasons that could not be determined from available evidence.NTSB WPR17LA046Accident · Serious injuriesLimited investigationFinal reportSoftex Invest V-24L · Paradise, MTA partial loss of power during cruise flight for reasons that could not be determined because postaccident examination of the engines did not reveal evidence of any preimpact mechanical malfunctions or failures that would have precluded normal operation.NTSB WPR16FA182Accident · 3 fatalField investigationFinal reportBeech 95 B55 (T42A) · Broadus, MTThe airplane's departure from cruise flight for reasons that could not be determined based on the available information.NTSB WPR11LA272Accident · 1 fatalLimited investigationFinal reportAir Tractor AT-301 · Hogeland, MTCollision with the ground while maneuvering at low altitude for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.