# NTSB investigations, MT: Enroute

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 1 of 8 · 389 cases

## Latest cases

- [NTSB WPR26LA344](https://openairdocs.org/ntsb/WPR26LA344.md): Taylorcraft BC12D · Nibbe, MT · Accident · Serious injuries · Class 4 · Limited · Investigation open · Sep 14, 2026 · N96888 · Substantial damage
- [NTSB WPR26LA020](https://openairdocs.org/ntsb/WPR26LA020.md): Piper PA-23-250 · Condon, MT · Accident · 3 fatal · Class 3 · Limited · Preliminary report · Oct 17, 2025 · N2345R · Substantial damage
  > On October 17, 2025, about 1615 mountain daylight time, a Piper PA-23-250, N2345R, was substantially damaged when it was involved in an accident near Condon, Montana. The pilot and two passengers were fatally injured. The airplane was operated as a Title 14…
- [NTSB WPR25LA176](https://openairdocs.org/ntsb/WPR25LA176.md): Cessna 182M · Willow Creek, MT · Accident · No injuries · Class 4 · Limited · Final report · Jun 15, 2025 · N71450 · Substantial damage
  > The pilot’s inadequate preflight inspection and fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.
- [NTSB WPR24LA271](https://openairdocs.org/ntsb/WPR24LA271.md): Piper PA-18-150 · Manhattan, MT · Accident · No injuries · Class 4 · Limited · Final report · Aug 11, 2024 · N8576Y · Substantial damage
  > A total loss of engine power due to carburetor icing.
- [NTSB WPR24LA109](https://openairdocs.org/ntsb/WPR24LA109.md): Raytheon B200 · Billings, MT · Accident · No injuries · Class 3 · Limited · Final report · Mar 12, 2024 · N299AV · Substantial damage
  > The 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 WPR24LA090](https://openairdocs.org/ntsb/WPR24LA090.md): Enstrom 280FX · Lewistown, MT · Accident · No injuries · Class 4 · Limited · Final report · Feb 15, 2024 · N899JS · Substantial damage
  > The 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 WPR24LA048](https://openairdocs.org/ntsb/WPR24LA048.md): Flight Design Ctls · Hungry Horse, MT · Accident · Minor injuries · Class 4 · Limited · Final report · Nov 18, 2023 · N924RD · Substantial damage
  > The 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 WPR23LA175](https://openairdocs.org/ntsb/WPR23LA175.md): Cessna P337H · Laurel, MT · Accident · Minor injuries · Class 3 · Limited · Final report · May 3, 2023 · N62PC · Substantial damage
  > A 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 WPR22LA231](https://openairdocs.org/ntsb/WPR22LA231.md): James C Geyman RV-9A · Missoula, MT · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 27, 2022 · N12VV · Substantial damage
  > The pilot’s improper fuel management, which resulted in fuel starvation and a loss of engine power. Contributing to the accident was the pilot’s failure to activate the auxiliary fuel boost pump, which inhibited a successful engine restart.
- [NTSB WPR22FA169](https://openairdocs.org/ntsb/WPR22FA169.md): Bearhawk LSA · Kalispell, MT · Accident · 2 fatal · Class 3 · Field · Final report · Apr 30, 2022 · N1908A · Substantial damage
  > An excessive pitch control input for undetermined reasons while the airplane was operating above maneuvering speed, which led to a structural failure of the right wing during cruise flight. Contributing to the accident was the poor construction quality of the…
- [NTSB WPR21FA258](https://openairdocs.org/ntsb/WPR21FA258.md): Cessna 172R · Missoula, MT · Accident · 2 fatal · Class 3 · Field · Final report · Jul 1, 2021 · N2388L · Substantial damage
  > The pilot’s failure to maintain airspeed and exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall at an altitude too low for recovery.
- [NTSB WPR20FA063](https://openairdocs.org/ntsb/WPR20FA063.md): Cessna TR182 · Billings, MT · Accident · 4 fatal · Class 3 · Field · Final report · Jan 12, 2020 · N736YU · Destroyed
  > The pilot’s failure to maintain clearance due to poor decision making in selecting an unsafe altitude during cruise flight.
- [NTSB DCA18CA255](https://openairdocs.org/ntsb/DCA18CA255.md): Embraer ERJ175 · Cut Bank, MT · Accident · Serious injuries · Data collection · Final report · Jun 17, 2018 · N637CZ · No damage
  > an unexpected encounter with clear air turbulence.
- [NTSB WPR18LA145](https://openairdocs.org/ntsb/WPR18LA145.md): Sportavia Putzer RF5B Sperber · Lookout Pass, MT · Accident · Minor injuries · Limited investigation · Final report · May 22, 2018 · N66GL · Substantial damage
  > The pilot’s improper decision to continue flight toward rising terrain after the engine overheated, which necessitated a precautionary landing when the motorglider could not maintain altitude in downdrafts.
- [NTSB GAA17CA529](https://openairdocs.org/ntsb/GAA17CA529.md): Cessna 182 · Fairfield, MT · Accident · Minor injuries · Data collection · Final report · Sep 7, 2017 · N735KQ · Destroyed
  > The pilot's failure to secure the right fuel cap during the preflight inspection, which resulted in fuel exhaustion, a total loss of engine power, and an off-airport hard landing.
- [NTSB WPR17LA046](https://openairdocs.org/ntsb/WPR17LA046.md): Softex Invest V-24L · Paradise, MT · Accident · Serious injuries · Limited investigation · Final report · Jan 3, 2017 · N710XP · Substantial damage
  > A 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 WPR17LA031](https://openairdocs.org/ntsb/WPR17LA031.md): Piper PA 31T · Missoula, MT · Accident · No injuries · Limited investigation · Final report · Dec 5, 2016 · N909PW · Substantial damage
  > Failure of the left windshield due to moisture ingression into the windshield laminate, which deteriorated the strength of the windshield.
- [NTSB WPR16FA182](https://openairdocs.org/ntsb/WPR16FA182.md): Beech 95 B55 (T42A) · Broadus, MT · Accident · 3 fatal · Field investigation · Final report · Sep 17, 2016 · N413D · Substantial damage
  > The airplane's departure from cruise flight for reasons that could not be determined based on the available information.
- [NTSB DCA16CA030](https://openairdocs.org/ntsb/DCA16CA030.md): Airbus A319 115 · Great Falls, MT · Accident · Serious injuries · Data collection · Final report · Dec 10, 2015 · N3014R · No damage
  > an encounter with turbulence during initial descent.
- [NTSB WPR15FA247](https://openairdocs.org/ntsb/WPR15FA247.md): Cessna 172P · Townsend, MT · Accident · 2 fatal · Field investigation · Final report · Aug 20, 2015 · N62731 · Substantial damage
  > The non-instrument-rated pilot's decision to conduct a cross-country flight over a mountain range in dark night conditions with limited night flight experience, which resulted in a collision with mountainous terrain.
- [NTSB WPR15LA229](https://openairdocs.org/ntsb/WPR15LA229.md): Cessna TU206G · Saint Ignatius, MT · Accident · No injuries · Limited investigation · Final report · Aug 3, 2015 · N235HM · Substantial damage
  > Maintenance personnel’s failure to tighten a fuel line, which resulted in a loss of fuel pressure and a subsequent loss of engine power during cruise flight and an off-airport landing and collision with obstacles.
- [NTSB WPR15FA135](https://openairdocs.org/ntsb/WPR15FA135.md): Piper PA32R - 301 · Townsend, MT · Accident · 1 fatal · Field investigation · Final report · Mar 26, 2015 · C-GAUS · Substantial damage
  > The pilot's decision to depart on and to continue a visual flight rules flight over mountainous terrain into instrument meteorological conditions, which resulted in controlled flight into terrain. Contributing to the accident was the pilot's lack of recent…
- [NTSB WPR14LA023](https://openairdocs.org/ntsb/WPR14LA023.md): Cessna 172 - M · Hardin, MT · Accident · Minor injuries · Limited investigation · Final report · Oct 21, 2013 · N80257 · Substantial damage
  > A rough-running engine and partial loss of power, which resulted from the pilot’s failure to use carburetor heat appropriately while operating in an area conducive to carburetor icing.
- [NTSB WPR13LA302](https://openairdocs.org/ntsb/WPR13LA302.md): S.N.I.A.S. AS-350B Ecureuil · Hamilton, MT · Accident · No injuries · Limited investigation · Final report · Jul 1, 2013 · N989WC · Substantial damage
  > The loss of engine power during cruise flight due to the fatigue failure of a pneumatic fuel controller pipe. Also causal was maintenance personnel’s failure to adequately maintain the pipe and replace it with a thicker type.
- [NTSB WPR13FA183](https://openairdocs.org/ntsb/WPR13FA183.md): Cessna 182C · Circle, MT · Accident · 1 fatal · Field investigation · Final report · Apr 6, 2013 · N8721T · Destroyed
  > The pilot’s failure to maintain airplane control as a result of spatial disorientation. Contributing to the accident was the pilot’s decision to continue flight into low visibility conditions.
- [NTSB WPR12CA209](https://openairdocs.org/ntsb/WPR12CA209.md): Piper PA-28-140 · Sula, MT · Accident · Minor injuries · Data collection · Final report · Jun 8, 2012 · N2839T · Substantial damage
  > The pilot's inability to maintain clearance from terrain while operating in a downdraft over mountainous terrain.
- [NTSB WPR11FA348](https://openairdocs.org/ntsb/WPR11FA348.md): Cessna 210-5(205) · Darby, MT · Accident · Minor injuries · Field investigation · Final report · Jul 22, 2011 · N8427Z · Substantial damage
  > The fatigue failure of the aluminum air intake duct, which resulted in material being ingested into the engine cylinders and a subsequent loss of engine power during cruise flight.
- [NTSB WPR11LA288](https://openairdocs.org/ntsb/WPR11LA288.md): Air Tractor AT-502 · Lewistown, MT · Accident · No injuries · Limited investigation · Final report · Jun 25, 2011 · N1022N · Substantial damage
  > The fatigue fracture and separation of the fuel bypass line, which resulted in a total loss of engine power.
- [NTSB CEN10LA496](https://openairdocs.org/ntsb/CEN10LA496.md): Cessna 182T · Mosby, MT · Accident · No injuries · Limited investigation · Final report · Aug 18, 2010 · N1142U · Substantial damage
  > A partial loss of engine power for undetermined reasons during an en route climb.
- [NTSB WPR10LA343](https://openairdocs.org/ntsb/WPR10LA343.md): Ercoupe 415 · Whitehall, MT · Accident · No injuries · Limited investigation · Final report · Jul 9, 2010 · N87349 · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB WPR10FA273](https://openairdocs.org/ntsb/WPR10FA273.md): Piper PA-34-220T · Lincoln, MT · Accident · 2 fatal · Field investigation · Final report · May 30, 2010 · N44MC · Substantial damage
  > The pilot’s decision to continue flight into an area of low ceilings and low visibility and his failure to maintain sufficient clearance from mountainous terrain.
- [NTSB WPR10FA018](https://openairdocs.org/ntsb/WPR10FA018.md): Cessna 182 · Pryor, MT · Accident · 2 fatal · Field investigation · Final report · Oct 13, 2009 · N6202A · Substantial damage
  > The pilot’s decision to continue flight into an area of low ceilings and low visibility and his failure to maintain clearance from terrain.
- [NTSB WPR10LA003](https://openairdocs.org/ntsb/WPR10LA003.md): Mateskon Fisher DAK · Bozeman, MT · Accident · Minor injuries · Limited investigation · Final report · Oct 3, 2009 · N359JM · Substantial damage
  > A loss of engine power due to shearing of the crankshaft gear cluster bolts. Contributing to the accident was the lack of regular overhaul periods as recommended by the engine manufacturer.
- [NTSB WPR09FA176](https://openairdocs.org/ntsb/WPR09FA176.md): Maule M-4-220C · Hungry Horse, MT · Accident · 1 fatal · Field investigation · Final report · Apr 1, 2009 · N2007U · Destroyed
  > The pilot's improper decision to continue flight into an area of reduced visibility and snow showers during cruise flight, which resulted in the pilot's spatial disorientation and subsequent loss of aircraft control.
- [NTSB DCA09IA014](https://openairdocs.org/ntsb/DCA09IA014.md): Boeing 777 · Bozeman, MT · Incident · No injuries · Incident investigation · Final report · Nov 26, 2008 · N862DA · No damage
  > An accumulation of ice in the fuel system, which formed from the water normally present in jet fuel during commonly encountered flight conditions, which accreted and released, restricting the fuel flow at the right engine fuel-oil heat exchanger inlet face.…
- [NTSB LAX08LA154](https://openairdocs.org/ntsb/LAX08LA154.md): Maule MX-7-235 · Boulder, MT · Accident · 1 fatal · Limited investigation · Final report · May 23, 2008 · N5657Y · Substantial damage
  > The pilot's decision to continue flight at low altitude in instrument weather conditions and his failure to maintain clearance from a power line. Contributing to the accident were low cloud and visibility conditions.
- [NTSB SEA08LA095](https://openairdocs.org/ntsb/SEA08LA095.md): Piper PA-28-181 · Bridger, MT · Accident · Minor injuries · Limited investigation · Final report · Mar 26, 2008 · N432RM · Substantial damage
  > The pilot failed to maintain situational awareness during the flight. Contributing to the accident were the dark night, the pilot's failure to follow approved navigational procedures for the flight, and the pilot's over reliance on the avionics in the…
- [NTSB SEA08FA006](https://openairdocs.org/ntsb/SEA08FA006.md): Cessna 310N · Ekalaka, MT · Accident · 2 fatal · Field investigation · Final report · Oct 7, 2007 · N85WT · Substantial damage
  > The pilot's improper in-flight planning/decision, his continued flight into adverse weather (icing conditions), and failure to maintain an adequate airspeed during the emergency descent for landing. Contributing to the accident were the forecast icing…
- [NTSB LAX07LA238](https://openairdocs.org/ntsb/LAX07LA238.md): de Havilland Beaver DHC-2 MK.1 · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Jul 24, 2007 · N6784L · Substantial damage
  > A loss of engine power due to the failure of the supercharger impeller bushing, which allowed raw oil to enter the induction system.
- [NTSB SEA07LA133](https://openairdocs.org/ntsb/SEA07LA133.md): Beech B-99 · Billings, MT · Accident · No injuries · Limited investigation · Final report · May 19, 2007 · N950AA · Substantial damage
  > The total failure of the nose landing gear actuator and the subsequent nose gear collapse during landing.
- [NTSB SEA07FA051](https://openairdocs.org/ntsb/SEA07FA051.md): Beech 200 · Belgrade, MT · Accident · 3 fatal · Field investigation · Final report · Feb 7, 2007 · N45MF · Substantial damage
  > The pilot's failure to maintain an adequate altitude and descent rate during a night visual approach. Dark night conditions and mountainous terrain are factors in the accident.
- [NTSB SEA07FA014](https://openairdocs.org/ntsb/SEA07FA014.md): Bell 407 · Kalispell, MT · Accident · No injuries · Field investigation · Final report · Nov 3, 2006 · N407KH · Substantial damage
  > On-speed failure of the second stage turbine wheel as the result of engine oil starvation. The lack of maintenance oversight was a contributing factor.
- [NTSB SEA06LA167](https://openairdocs.org/ntsb/SEA06LA167.md): Kinnson Lancair IV-P Turbine · Helena, MT · Accident · Minor injuries · Limited investigation · Final report · Aug 22, 2006 · N514PT · Substantial damage
  > The total loss of engine power as a result of turbine over temperature due to the pilot's failure to follow proper procedures for engine operation. A contributing factor was the lack of suitable terrain for the ensuing forced landing.
- [NTSB SEA06TA153](https://openairdocs.org/ntsb/SEA06TA153.md): Bell 206L-1 · Busby, MT · Accident · No injuries · Final report · Aug 3, 2006 · N5746N · Substantial damage
  > The improper overhaul of the turbine assembly by maintenance personnel, which resulted in failure of the turbine and a total loss of engine power. A contributing factor was the pilot's misjudgment of the landing flare at the termination of the autorotation.
- [NTSB SEA06CA080](https://openairdocs.org/ntsb/SEA06CA080.md): Pitrolo GL-25 · Worden, MT · Accident · No injuries · Data collection · Final report · Apr 21, 2006 · N27EP · Substantial damage
  > The loss of engine power due to failure of both electronic ignition systems. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA06LA052](https://openairdocs.org/ntsb/SEA06LA052.md): Robinson R44 · Helena, MT · Accident · 1 fatal · Limited investigation · Final report · Feb 6, 2006 · N7085U · Destroyed
  > The pilot's intentional suicide. The unauthorized use of a helicopter and impairment by alcohol were factors.
- [NTSB SEA05LA121](https://openairdocs.org/ntsb/SEA05LA121.md): Cessna 188A · Fairview, MT · Accident · Minor injuries · Limited investigation · Final report · Jun 20, 2005 · N2133U · Substantial damage
  > While in cruise flight a separation of a propeller blade as a result of a propeller hub crack. Factors contributing to the accident included the installation of an unapproved propeller, and the failure to properly service the propeller with red dyed oil for…
- [NTSB SEA05FA092](https://openairdocs.org/ntsb/SEA05FA092.md): Cessna T210N · Kalispell, MT · Accident · 2 fatal · Field investigation · Final report · May 3, 2005 · N106PM · Destroyed
  > Loss of aircraft control during climb while in instrument meteorological conditions. Icing conditions was a factor.
- [NTSB SEA05LA048](https://openairdocs.org/ntsb/SEA05LA048.md): Piper PA-28-140 · Superior, MT · Accident · No injuries · Limited investigation · Final report · Feb 9, 2005 · N6399W · Substantial damage
  > A loss of engine power due to the pilot's inadequate planning/decision and improper fuel management, which resulted in fuel starvation. A contributing factor was the berm.
- [NTSB SEA04GA192](https://openairdocs.org/ntsb/SEA04GA192.md): Cessna U206G · Essex, MT · Accident · 3 fatal · Final report · Sep 20, 2004 · N206SM · Destroyed
  > The pilot's misidentification of the airplane's location, which resulted in his improper decision to fly into the wrong drainage, and his failure to maintain terrain clearance while executing a turn to reverse course after he realized his navigational error.…

Next page: https://openairdocs.org/ntsb-phases/400/cases.md?state=MT&page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
  crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
  current_codes AS (
    SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code,
      row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n
    FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
    WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*'
      AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982"))
  ),
  phases AS (
    SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
    FROM current_codes WHERE n = 1
    UNION ALL
    SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main
    FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode"
    WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
  ),
  case_phases AS (
    SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code
    FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey
    LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
    WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
  )
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 case_mkey FROM case_phases WHERE main = 400)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/400/cases?state=MT

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.