# NTSB investigations: Continental I0-470 series, MT

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.

## Latest cases

- [NTSB WPR26LA335](https://openairdocs.org/ntsb/WPR26LA335.md): Cessna 210 · Polson, MT · Accident · No injuries · Class 3 · Limited · Preliminary report · Sep 10, 2026 · N9517T · Substantial damage
  > On September 10, 2026, about 1005 mountain daylight time, a Cessna 210, N9517T, was substantially damaged when it was involved in an accident near Polson Airport (8S1), Polson, Montana. The student pilot was not injured. The airplane was operated as a Title…
- [NTSB WPR24LA323](https://openairdocs.org/ntsb/WPR24LA323.md): Beech J35 · Belgrade, MT · Accident · Class 3 · Limited · Preliminary report · Aug 28, 2024 · N8350D · Substantial damage
  > On August 27, 2024, about 1845 mountain daylight time, a Beech J35, N8350D, was substantially damaged when it was involved in an accident near Belgrade, Montana. The pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations…
- [NTSB WPR21LA315](https://openairdocs.org/ntsb/WPR21LA315.md): Bellanca 14-19-3 · Whitefish, MT · Accident · No injuries · Class 4 · Limited · Final report · Aug 10, 2021 · N1257R · Substantial damage
  > A total loss of engine power due to fuel starvation. Contributing to the accident was the pilot’s failure to accomplish a preflight inspection.
- [NTSB WPR20CA149](https://openairdocs.org/ntsb/WPR20CA149.md): Cessna 185 · Winifred, MT · Accident · No injuries · Class 4 · Data collection · Final report · May 17, 2020 · N185 · Substantial damage
  > An inadequate flare that resulted in a bounced landing and the pilot's subsequent delayed decision to go-around that did not allow for sufficient clearance from trees when the airplane was affected by a gusting wind.
- [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 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 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 WPR12CA284](https://openairdocs.org/ntsb/WPR12CA284.md): Cessna 210-5 · West Glacier, MT · Accident · Minor injuries · Data collection · Final report · Jul 2, 2012 · N8450Z · Substantial damage
  > The pilot elected to abort the takeoff without sufficient runway available to land and stop the airplane. Contributing to the accident was the illusion created by the rising terrain, which influenced the pilot's decision to abort the takeoff.
- [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 WPR09CA092](https://openairdocs.org/ntsb/WPR09CA092.md): Ryan Navion · Three Forks, MT · Accident · No injuries · Data collection · Final report · Jan 19, 2009 · N4443K · Substantial damage
  > A total loss of engine power due to fuel starvation as a result of the pilot's inadequate fuel system management. Contributing to the accident were the pilot's diverted attention and failure to perform the prelanding checklist.
- [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 SEA04LA094](https://openairdocs.org/ntsb/SEA04LA094.md): Beech P-35 · Havre, MT · Accident · No injuries · Limited investigation · Final report · May 29, 2004 · N7DR · Substantial damage
  > A loss of engine power due to fuel starvation during the initial climb after takeoff as a result of an unsecured fuel sender unit which resulted in a false fuel quantity indication.
- [NTSB SEA93FA205](https://openairdocs.org/ntsb/SEA93FA205.md): Cessna 185A · De Borgia, MT · Accident · 2 fatal · Field investigation · Final report · Sep 22, 1993 · N4176Y · Destroyed
  > The pilot's poor in-flight planning/decision and his failure to maintain airspeed above a stall.
- [NTSB DEN80DTI15](https://openairdocs.org/ntsb/DEN80DTI15.md): Cessna 180 · Raynesford, MT · Accident · No injuries · Closed · Sep 8, 1980 · N52155 · Substantial damage
- [NTSB DEN80FTA19](https://openairdocs.org/ntsb/DEN80FTA19.md): Beech 95-B55 · Miles City, MT · Accident · No injuries · Closed · Aug 13, 1980 · N1552W · Substantial damage
- [NTSB SEA79FA015](https://openairdocs.org/ntsb/SEA79FA015.md): Cessna 310J · Wolf Point, MT · Accident · No injuries · Closed · Nov 12, 1978 · N3057L · Substantial damage
- [NTSB SEA78DTI02](https://openairdocs.org/ntsb/SEA78DTI02.md): Cessna 310G · Belgrade, MT · Accident · No injuries · Closed · Oct 20, 1977 · N8984Z · Substantial damage
- [NTSB SEA78FTA02](https://openairdocs.org/ntsb/SEA78FTA02.md): Cessna 210-5 · Lewistown, MT · Accident · Minor injuries · Closed · Oct 2, 1977 · N8162Z · Substantial damage
- [NTSB SEA76FTA23](https://openairdocs.org/ntsb/SEA76FTA23.md): Cessna 205 · Fishtail, MT · Accident · No injuries · Closed · Jun 9, 1976 · N8481Z · Substantial damage
- [NTSB SEA74FTA04](https://openairdocs.org/ntsb/SEA74FTA04.md): Cessna 185 · Billings, MT · Accident · No injuries · Closed · Jul 27, 1973 · N9920X · Substantial damage
- [NTSB SEA72FTI15](https://openairdocs.org/ntsb/SEA72FTI15.md): Cessna 310G · Great Falls, MT · Accident · No injuries · Closed · Mar 17, 1972 · N2905R · Substantial damage
- [NTSB SEA71FDA14](https://openairdocs.org/ntsb/SEA71FDA14.md): Cessna 310C · Miles City, MT · Accident · No injuries · Closed · Mar 10, 1971 · N1814H · Substantial damage
- [NTSB SEA71FDG23](https://openairdocs.org/ntsb/SEA71FDG23.md): Beech J35 · Drummond, MT · Accident · No injuries · Closed · Feb 25, 1971 · N8349D · Substantial damage
- [NTSB SEA71FDG06](https://openairdocs.org/ntsb/SEA71FDG06.md): Beech J35 · Helena, MT · Accident · No injuries · Closed · Jul 21, 1970 · N3036C · Substantial damage
- [NTSB SEA70F0126](https://openairdocs.org/ntsb/SEA70F0126.md): Beech J35 · Billings, MT · Accident · No injuries · Closed · Dec 16, 1969 · N8263D · Substantial damage
- [NTSB SEA68F0321](https://openairdocs.org/ntsb/SEA68F0321.md): Beech P35 · Great Falls, MT · Accident · No injuries · Closed · May 5, 1968 · N1400G · Substantial damage
- [NTSB SEA68F0089](https://openairdocs.org/ntsb/SEA68F0089.md): Cessna 185 · Billings, MT · Accident · No injuries · Closed · Jul 14, 1967 · N4001Y · Substantial damage
- [NTSB SEA68D0064](https://openairdocs.org/ntsb/SEA68D0064.md): Beech 35-B33 · Westby, MT · Accident · No injuries · Closed · Jun 3, 1967 · N8946M · Substantial damage
- [NTSB SEA68D0047](https://openairdocs.org/ntsb/SEA68D0047.md): Cessna 210 · Drummond, MT · Accident · No injuries · Closed · May 25, 1967 · N8496Z · Substantial damage
- [NTSB SEA67D0167](https://openairdocs.org/ntsb/SEA67D0167.md): Cessna 185 · Great Falls, MT · Accident · No injuries · Closed · Sep 15, 1966 · N4145Y · Substantial damage
- [NTSB SEA66D0189](https://openairdocs.org/ntsb/SEA66D0189.md): Beechcraft C33 · Chester, MT · Accident · No injuries · Closed · Dec 7, 1965 · N6128V · Substantial damage

## The whole list in SQL

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

```sql
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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17027'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17027&state=MT

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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.