# NTSB investigations: Continental IO-360 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 WPR26LA055](https://openairdocs.org/ntsb/WPR26LA055.md): Maule M-5-210C · Eureka, MT · Accident · No injuries · Class 4 · Limited · Final report · Dec 9, 2025 · N339X · Substantial damage
  > The pilot’s failure to maintain directional control during landing in crosswind conditions. Contributing to the accident was the pilot's lack of recent flight experience.
- [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 SEA00FA074](https://openairdocs.org/ntsb/SEA00FA074.md): Maule M-5-210C · Babb, MT · Accident · 1 fatal · Field investigation · Final report · Apr 16, 2000 · N284X · Destroyed
  > Terrain clearance was not maintained. High mountains, mountain obscuration, and the pilot's inadequate preflight planning/preparation were factors.
- [NTSB SEA99LA008](https://openairdocs.org/ntsb/SEA99LA008.md): Cessna 172K · Dillon, MT · Accident · No injuries · Limited investigation · Final report · Oct 26, 1998 · N736VR · Substantial damage
  > The student pilot-in-command's failure to maintain directional control. Contributing factors were rough terrain and crosswind conditions.
- [NTSB SEA76DTI09](https://openairdocs.org/ntsb/SEA76DTI09.md): Maule M-5 · Thompson Falls, MT · Accident · No injuries · Closed · Aug 24, 1975 · N62048 · Substantial damage
- [NTSB SEA70D0124](https://openairdocs.org/ntsb/SEA70D0124.md): Maule M-4 · Great Falls, MT · Accident · No injuries · Closed · Dec 9, 1969 · N9830M · 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 ('17025', '17045'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17025&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.