# NTSB investigations, MT: Maneuvering

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 7 · 304 cases

## Latest cases

- [NTSB WPR26LA360](https://openairdocs.org/ntsb/WPR26LA360.md): Cessna A185F · Livingston, MT · Accident · No injuries · Class 4 · Limited · Investigation open · Sep 26, 2026 · N185BZ · Substantial damage
- [NTSB WPR26LA280](https://openairdocs.org/ntsb/WPR26LA280.md): Harmon Rocket II · Glasgow, MT · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 24, 2026 · C-FCPG · Substantial damage
  > The 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 WPR25LA239](https://openairdocs.org/ntsb/WPR25LA239.md): Robinson Helicopter R44 II · Ponderosa Pines, MT · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 3, 2025 · N750GT · Substantial damage
  > The pilot’s improper pedal application during an approach to a hover.
- [NTSB WPR25FA182](https://openairdocs.org/ntsb/WPR25FA182.md): Cessna 172 · Billings, MT · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jun 19, 2025 · N79306 · Substantial damage
  > On June 19, 2025, at 1412 mountain daylight time, a Cessna 172K airplane, N79306, was destroyed when it was involved in an accident near Billings, Montana. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations…
- [NTSB WPR25LA165](https://openairdocs.org/ntsb/WPR25LA165.md): Weatherly 620B · Lewiston, MT · Accident · No injuries · Class 4 · Limited · Final report · May 30, 2025 · N90393 · Substantial damage
  > The pilot’s failure to maintain clearance from terrain while maneuvering at a low altitude.
- [NTSB WPR24FA270](https://openairdocs.org/ntsb/WPR24FA270.md): Cessna 182K · Augusta, MT · Accident · 3 fatal · Class 3 · Field · Final report · Aug 8, 2024 · N2764Q · Substantial damage
  > The 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 WPR24FA238](https://openairdocs.org/ntsb/WPR24FA238.md): Air Tractor AT-802A · Helena, MT · Accident · 1 fatal · Class 3 · Field · Final report · Jul 10, 2024 · N10122 · Substantial damage
  > The 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 WPR24FA150](https://openairdocs.org/ntsb/WPR24FA150.md): Piper PA-18-150 · Thurlow, MT · Accident · 2 fatal · Class 3 · Field · Final report · May 14, 2024 · UNREG · Substantial damage
  > The 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 WPR23LA001](https://openairdocs.org/ntsb/WPR23LA001.md): Scoda Aeronautica Ltda Super Petrel LS · Perma, MT · Accident · 1 fatal · Class 3 · Limited · Final report · Oct 2, 2022 · N892SP · Substantial damage
  > The pilot’s failure to maintain clearance from the powerline.
- [NTSB WPR22LA293](https://openairdocs.org/ntsb/WPR22LA293.md): Air Tractor AT-301 · Circle, MT · Accident · No injuries · Class 4 · Limited · Final report · Aug 7, 2022 · N36542 · Substantial damage
  > The loss of engine power due to carburetor ice. Contributing to the accident was the pilot’s failure to use carburetor heat.
- [NTSB WPR20LA245](https://openairdocs.org/ntsb/WPR20LA245.md): Cessna 337 · Ennis, MT · Accident · 1 fatal · Class 3 · Limited · Final report · Jul 30, 2020 · N337V · Substantial damage
  > The pilot-in-command’s failure to maintain sufficient airspeed while attempting an evasive maneuver from a boxed canyon, which resulted in an aerodynamic stall/spin and impact with mountainous terrain. Contributing to the accident was the pilot-in-command’s…
- [NTSB WPR20LA235](https://openairdocs.org/ntsb/WPR20LA235.md): Mcdonnell Douglas 600 · Thompson Falls, MT · Accident · No injuries · Class 3 · Limited · Final report · Jul 21, 2020 · N208MP · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB WPR19FA246](https://openairdocs.org/ntsb/WPR19FA246.md): Beech 33 · St. Ignatius, MT · Accident · 3 fatal · Class 3 · Field · Final report · Aug 29, 2019 · N9529Y · Substantial damage
  > The pilot’s decision to maneuver the airplane at a low altitude, which resulted in impact with power lines and terrain.
- [NTSB WPR19LA213](https://openairdocs.org/ntsb/WPR19LA213.md): Cessna 150 · Roundup, MT · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 30, 2019 · C-GEYP · Substantial damage
  > The pilot ‘s failure to maintain an adequate altitude above the trees while maneuvering to land.
- [NTSB GAA19CA432](https://openairdocs.org/ntsb/GAA19CA432.md): Aviat A1 · Ennis, MT · Accident · Minor injuries · Data collection · Final report · Jul 17, 2019 · N137C · Destroyed
  > The pilot's exceedance of the airplane's critical angle of attack while turning at low altitude, which resulted in an aerodynamic stall. Contributing to the accident was the pilot's distraction due to looking at wildlife.
- [NTSB GAA19CA238](https://openairdocs.org/ntsb/GAA19CA238.md): Aerospatiale AS350 · Sula, MT · Accident · No injuries · Data collection · Final report · Apr 30, 2019 · N350DL · Substantial damage
  > The pilot's failure to maintain adequate clearance from ground equipment, which resulted in a tail rotor blade impact.
- [NTSB WPR19LA055](https://openairdocs.org/ntsb/WPR19LA055.md): Cessna 180 · Townsend, MT · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 2, 2019 · N4934A · Substantial damage
  > The pilot’s failure to maintain clearance from power lines while maneuvering at low level, which resulted in a wire strike and subsequent impact with terrain.
- [NTSB WPR18FA260](https://openairdocs.org/ntsb/WPR18FA260.md): Robert L Coons RotorWay RW 1 · Billings, MT · Accident · 1 fatal · Field investigation · Final report · Sep 12, 2018 · N166LC · Substantial damage
  > The pilot's failure to maintain clearance with a hangar while maneuvering to his hangar. Contributing to the accident was the pilot's limited experience in helicopters.
- [NTSB GAA18CA533](https://openairdocs.org/ntsb/GAA18CA533.md): Taylorcraft BC12 · Cut Bank, MT · Accident · Minor injuries · Data collection · Final report · Sep 5, 2018 · N95514 · Substantial damage
  > The pilot’s failure to see and avoid power wires while maneuvering at low altitude. Contributing to the accident was the pilot’s inability to determine the airplane’s altitude due to sun glare.
- [NTSB WPR18LA076](https://openairdocs.org/ntsb/WPR18LA076.md): Buckeye Industries Dream Machine 582 · Chester, MT · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 19, 2018 · N92048 · Substantial damage
  > The pilot's failure to maintain adequate clearance from powerlines.
- [NTSB WPR17LA168](https://openairdocs.org/ntsb/WPR17LA168.md): Robinson Helicopter R44 II · Lake Sutherlin, MT · Accident · No injuries · Limited investigation · Final report · Jul 25, 2017 · N233JD · Substantial damage
  > The pilot’s transition into an out-of-ground-effect hover in high-density altitude conditions that exceeded the helicopter’s performance capabilities, which resulted in loss of rotor rpm.
- [NTSB WPR17LA145](https://openairdocs.org/ntsb/WPR17LA145.md): Piper L 21B · Big Timber, MT · Accident · Serious injuries · Limited investigation · Final report · Jul 8, 2017 · N99031 · Substantial damage
  > The pilot's decision to fly at low altitude in the vicinity of power lines, which resulted in a wire strike.
- [NTSB WPR17LA143](https://openairdocs.org/ntsb/WPR17LA143.md): Robinson Helicopter R44 II · Ronan, MT · Accident · Serious injuries · Limited investigation · Final report · Jul 6, 2017 · N442DR · Substantial damage
  > The pilot's failure to maintain adequate airspeed, which resulted in a loss of tail rotor effectiveness during a low-altitude orbiting maneuver and a subsequent hard landing.
- [NTSB GAA17CA225](https://openairdocs.org/ntsb/GAA17CA225.md): Weatherly 620B · Lewistown, MT · Accident · No injuries · Data collection · Final report · Apr 10, 2017 · N9004M · Substantial damage
  > The pilot’s failure to maintain altitude during low-altitude maneuvers in flat light conditions.
- [NTSB GAA16CA080](https://openairdocs.org/ntsb/GAA16CA080.md): Aviat A1 · Broadus, MT · Accident · Minor injuries · Data collection · Final report · Dec 13, 2015 · N29712 · Substantial damage
  > The pilot's failure to maintain clearance from the wires while flying at a low altitude resulting in a wire strike, a loss of airplane control, and the consequent impact with terrain.
- [NTSB GAA15LA217](https://openairdocs.org/ntsb/GAA15LA217.md): MD Helicopter 369E · Whitefish, MT · Accident · Minor injuries · Limited investigation · Final report · Aug 5, 2015 · N43792 · Substantial damage
  > The pilot’s failure to maintain altitude and a level attitude while hovering over water at night during an external load operation, which resulted in the helicopter’s main rotor contacting the surface of the water.
- [NTSB GAA15CA089](https://openairdocs.org/ntsb/GAA15CA089.md): Cessna 188 · Polson, MT · Accident · No injuries · Data collection · Final report · May 26, 2015 · N53141 · Substantial damage
  > The pilot's failure to maintain airplane pitch, power, and turn coordination while maneuvering at low altitude, resulting in an aerodynamic stall and a collision with terrain.
- [NTSB WPR15CA128](https://openairdocs.org/ntsb/WPR15CA128.md): Enstrom F28 - C · Shelby, MT · Accident · No injuries · Data collection · Final report · Mar 14, 2015 · N5688N · Substantial damage
  > The pilot's failure to maintain main rotor RPM during a low altitude operation, which resulted in a loss of aircraft control and collision with terrain.
- [NTSB WPR15FA062](https://openairdocs.org/ntsb/WPR15FA062.md): Piper PA 18-150 · Ronan, MT · Accident · 1 fatal · Field investigation · Final report · Dec 16, 2014 · N5989Z · Substantial damage
  > The pilot’s failure to maintain clearance from terrain while performing an intentional, abrupt low-level maneuver.
- [NTSB WPR15FA049](https://openairdocs.org/ntsb/WPR15FA049.md): Cessna 170B · Alzada, MT · Accident · 1 fatal · Field investigation · Final report · Nov 28, 2014 · N3292A · Substantial damage
  > The pilot's failure to maintain airplane control while maneuvering, which resulted in a collision with mountainous terrain.
- [NTSB WPR14FA362](https://openairdocs.org/ntsb/WPR14FA362.md): Cessna 177B · Neihart, MT · Accident · 1 fatal · Field investigation · Final report · Sep 2, 2014 · N34880 · Destroyed
  > The pilot's failure to maintain clearance from terrain while maneuvering at low altitude in turbulent conditions over mountainous terrain. Contributing to the accident was the pilot's improper decision to traverse the mountainous area with the airplane over…
- [NTSB WPR14FA231](https://openairdocs.org/ntsb/WPR14FA231.md): Grumman G 21A · Sula, MT · Accident · 1 fatal · Field investigation · Final report · Jun 17, 2014 · N888GG · Destroyed
  > The pilot's decision to continue flight into deteriorating weather conditions in an airplane not maintained for instrument flight, which resulted in a loss of control due to spatial disorientation.
- [NTSB WPR14CA041](https://openairdocs.org/ntsb/WPR14CA041.md): Bell 206B · Superior, MT · Accident · No injuries · Data collection · Final report · Nov 2, 2013 · N888DR · Substantial damage
  > The pilot's failure to maintain aircraft control while maneuvering during a long-line operation.
- [NTSB WPR13FA343](https://openairdocs.org/ntsb/WPR13FA343.md): Robinson Helicopter R44 II · Thompson Falls, MT · Accident · 1 fatal · Field investigation · Final report · Jul 27, 2013 · N25WH · Substantial damage
  > The pilot's failure to maintain helicopter control while operating in conditions conducive to a loss of tail rotor effectiveness.
- [NTSB WPR13LA303](https://openairdocs.org/ntsb/WPR13LA303.md): Bell 206L-3 · Missoula, MT · Accident · Serious injuries · Limited investigation · Final report · Jun 28, 2013 · N868H · Substantial damage
  > The pilot's failure to prevent the helicopter from settling with power and to maintain proper position relative to an external load, which resulted in a loss of control and subsequent hard landing.
- [NTSB WPR13FA288](https://openairdocs.org/ntsb/WPR13FA288.md): Beech J35 · Helena, MT · Accident · 1 fatal · Field investigation · Final report · Jun 24, 2013 · N8255D · Substantial damage
  > The pilot’s failure to maintain adequate airspeed while maneuvering, which resulted in an aerodynamic stall/spin and subsequent impact with terrain.
- [NTSB WPR13FA208](https://openairdocs.org/ntsb/WPR13FA208.md): Bell 206B · Shepherd, MT · Accident · 1 fatal · Field investigation · Final report · Apr 27, 2013 · N150SP · Substantial damage
  > The pilot’s loss of control while maneuvering during low-altitude operations due to sudden neurological impairment or incapacitation and the helicopter’s subsequent collision with power lines.
- [NTSB WPR13TA205](https://openairdocs.org/ntsb/WPR13TA205.md): Bell BHT407 · Big Fork, MT · Accident · No injuries · Final report · Apr 25, 2013 · N937GR · Substantial damage
  > The pilot’s failure to maintain helicopter control while maneuvering over mountainous terrain in strong up/downdrafts and possible mountain wave activity, which resulted in a loss of tail rotor effectiveness.
- [NTSB WPR13FA073](https://openairdocs.org/ntsb/WPR13FA073.md): Beech B100 · Libby, MT · Accident · 2 fatal · Field investigation · Final report · Dec 19, 2012 · N499SW · Destroyed
  > The noncertificated pilot’s failure to maintain clearance from terrain while maneuvering to land in dark night conditions likely due to his geographic disorientation (lost). Contributing to the accident was the pilot’s improper decision to fly at night with a…
- [NTSB WPR13LA069](https://openairdocs.org/ntsb/WPR13LA069.md): Powerchute Airwolf 912ULS · Dell, MT · Accident · Serious injuries · Limited investigation · Final report · Dec 14, 2012 · N480QP · Substantial damage
  > The pilot's failure to maintain aircraft control and clearance from mountainous terrain while maneuvering at a low altitude in downdraft conditions.
- [NTSB WPR12TA364](https://openairdocs.org/ntsb/WPR12TA364.md): American Eurocopter AS350B3 · Sunburst, MT · Accident · No injuries · Final report · Aug 18, 2012 · N3939A · Substantial damage
  > The improper installation of the engine-to-main gearbox flex coupling, which resulted in the failure of the flex coupling and a loss of power to the rotor system during takeoff.
- [NTSB WPR12FA123](https://openairdocs.org/ntsb/WPR12FA123.md): Bellanca 7GCBC · Brockton, MT · Accident · 1 fatal · Field investigation · Final report · Mar 5, 2012 · N5542K · Substantial damage
  > The pilot’s failure to maintain adequate airspeed and airplane control while maneuvering at a low altitude, which resulted in a stall and subsequent impact with terrain.
- [NTSB WPR12CA025](https://openairdocs.org/ntsb/WPR12CA025.md): Cessna 172K · Florence, MT · Accident · No injuries · Data collection · Final report · Oct 30, 2011 · N7276G · Substantial damage
  > The pilot's failure to maintain clearance from a power line during a low-level flight along a river. Contributing to the accident was the pilot's decision to fly at a low altitude.
- [NTSB WPR11FA390](https://openairdocs.org/ntsb/WPR11FA390.md): Piper PA-18-150 · Forsyth, MT · Accident · 2 fatal · Field investigation · Final report · Aug 18, 2011 · N7666D · Substantial damage
  > The pilot’s failure to maintain adequate airspeed while maneuvering, which resulted in a stall/mush, loss of control, and impact with terrain.
- [NTSB WPR11FA383](https://openairdocs.org/ntsb/WPR11FA383.md): Piper PA-38-112 · Silver Bow, MT · Accident · 2 fatal · Field investigation · Final report · Aug 15, 2011 · N2584N · Substantial damage
  > The pilot's failure to maintain airplane control while maneuvering.
- [NTSB WPR11LA272](https://openairdocs.org/ntsb/WPR11LA272.md): Air Tractor AT-301 · Hogeland, MT · Accident · 1 fatal · Limited investigation · Final report · Jun 21, 2011 · N3661B · Substantial damage
  > Collision 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.
- [NTSB WPR11CA296](https://openairdocs.org/ntsb/WPR11CA296.md): Cessna 188 · Glasgow, MT · Accident · Minor injuries · Data collection · Final report · Jun 14, 2011 · N9802V · Substantial damage
  > The pilot's improper fuel management, which resulted in a total loss of engine power due to fuel exhaustion.
- [NTSB WPR11FA221](https://openairdocs.org/ntsb/WPR11FA221.md): Air Tractor AT-802A · Miles City, MT · Accident · 1 fatal · Field investigation · Final report · May 9, 2011 · N8523H · Substantial damage
  > The pilot's continued visual flight rules flight into deteriorating weather conditions in an airplane not equipped for instrument flight, which resulted in a collision with terrain.
- [NTSB WPR10FA438](https://openairdocs.org/ntsb/WPR10FA438.md): Cessna 182C · Belgrade, MT · Accident · 1 fatal · Field investigation · Final report · Aug 30, 2010 · N8957T · Substantial damage
  > The non-instrument rated pilot's decision to continue visual flight into instrument meteorological conditions, which resulted in a loss of airplane control.
- [NTSB WPR10FA330](https://openairdocs.org/ntsb/WPR10FA330.md): Piper PA-28R-180 · Dixon, MT · Accident · 4 fatal · Field investigation · Final report · Jun 27, 2010 · N7581J · Substantial damage
  > The pilot’s failure to maintain adequate airspeed and aircraft control while maneuvering, resulting in an aerodynamic stall and collision with mountainous terrain.

Next page: https://openairdocs.org/ntsb-phases/450/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 = 450)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/450/cases?state=MT

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