# NTSB investigations, MT: Roll over

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 WPR23LA269](https://openairdocs.org/ntsb/WPR23LA269.md): CSP Leasing MTO Sport · Gardiner, MT · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 1, 2023 · N207AG · Substantial damage
  > Failure of the rudder/nosewheel steering system for reasons that could not be determined, which resulted in loss of yaw control and a subsequent rollover.
- [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 GAA16CA369](https://openairdocs.org/ntsb/GAA16CA369.md): Stinson 108 · Red Lodge, MT · Accident · No injuries · Data collection · Final report · Jul 8, 2016 · N955C · Substantial damage
  > A deer running across the runway and impacting the left side of the airplane, resulting in a loss of directional control, a runway excursion, and a ground loop.
- [NTSB WPR14LA159](https://openairdocs.org/ntsb/WPR14LA159.md): Bell 206B III · Missoula, MT · Accident · Minor injuries · Limited investigation · Final report · Apr 4, 2014 · N43MA · Substantial damage
  > A dynamic rollover during attempted liftoff.
- [NTSB WPR14CA082](https://openairdocs.org/ntsb/WPR14CA082.md): Cubcrafters CC11-160 · Roberts, MT · Accident · No injuries · Data collection · Final report · Dec 29, 2013 · N924JS · Substantial damage
  > The pilot's selection of unsuitable terrain during taxi, which resulted in a loss of directional control.
- [NTSB WPR13CA412](https://openairdocs.org/ntsb/WPR13CA412.md): Piper PA 11 · Bozeman, MT · Accident · Minor injuries · Data collection · Final report · Sep 16, 2013 · N4988M · Substantial damage
  > The pilot's failure to maintain aircraft control and inadequate compensation for the high gusty wind conditions during taxi.
- [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 LAX08CA182](https://openairdocs.org/ntsb/LAX08CA182.md): Robinson R44 II · Missoula, MT · Accident · Minor injuries · Data collection · Final report · Jun 14, 2008 · N272SW · Destroyed
  > The student's inadvertent control interference, which the flight instructor was unable to overcome. A contributing factor was the instructor's poor crew coordination in his failure to verbally command the student to relinquish the controls and his inadequate…

## 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '097' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/097/sequence?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.