# NTSB investigations, 2011, 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 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 WPR11CA439](https://openairdocs.org/ntsb/WPR11CA439.md): Cessna 182D · Roundup, MT · Accident · No injuries · Data collection · Final report · Sep 5, 2011 · N8772X · Substantial damage
  > The pilot's failure to maintain clearance from an obstacle during the landing flare.
- [NTSB WPR11CA406](https://openairdocs.org/ntsb/WPR11CA406.md): Cessna A185F · Polson, MT · Accident · No injuries · Data collection · Final report · Aug 21, 2011 · N61609 · Substantial damage
  > The pilot's failure to maintain directional control during landing.
- [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 WPR11LA386](https://openairdocs.org/ntsb/WPR11LA386.md): Air Tractor AT-401 · Hardin, MT · Accident · No injuries · Limited investigation · Final report · Aug 16, 2011 · N1012T · Substantial damage
  > The loss of engine power during takeoff due to the fatigue failure of the turbine wheel blades, which resulted from inadequate maintenance and inspections.
- [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 WPR11LA370](https://openairdocs.org/ntsb/WPR11LA370.md): Piper J5A · Biddle, MT · Accident · No injuries · Limited investigation · Final report · Jul 24, 2011 · N38AW · Substantial damage
  > Failure of the left main landing gear strut during the landing roll due to a preexisting crack.
- [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 WPR11LA317](https://openairdocs.org/ntsb/WPR11LA317.md): Schweizer SGS 2-32 · Bigfork, MT · Accident · 1 fatal · Limited investigation · Final report · Jul 8, 2011 · N591CC · Substantial damage
  > The pilot’s failure to maintain adequate airspeed and his excessive control inputs during a simulated rope break while taking off, which resulted in an accelerated aerodynamic stall.
- [NTSB WPR11CA310](https://openairdocs.org/ntsb/WPR11CA310.md): Cubcrafters CC11-160 · Whitefish, MT · Accident · No injuries · Data collection · Final report · Jul 5, 2011 · N40WP · Substantial damage
  > The pilot's failure to maintain directional control during landing. Contributing to the accident was the pilot's lack of recent experience in a tailwheel equipped airplane.
- [NTSB WPR11LA289](https://openairdocs.org/ntsb/WPR11LA289.md): Lemond FLY Fisher · West Glacier, MT · Accident · Serious injuries · Limited investigation · Final report · Jun 26, 2011 · N397JL · Substantial damage
  > A total loss of engine power during takeoff due to water contamination in the fuel system. Contributing to the accident was the pilot’s inadequate preflight inspection of the airplane.
- [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 WPR11CA286](https://openairdocs.org/ntsb/WPR11CA286.md): Air Tractor AT301 · Circle, MT · Accident · No injuries · Data collection · Final report · Jun 24, 2011 · N2362D · Substantial damage
  > The pilot's failure to attain and maintain an adequate airspeed during initial climb.
- [NTSB WPR11CA281](https://openairdocs.org/ntsb/WPR11CA281.md): Piper PA-36-285 · Havre, MT · Accident · No injuries · Data collection · Final report · Jun 23, 2011 · N57736 · Substantial damage
  > The pilot's failure to maintain directional control during takeoff.
- [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 WPR11CA249](https://openairdocs.org/ntsb/WPR11CA249.md): Rusk Smith Super Cub · Heron, MT · Accident · Minor injuries · Data collection · Final report · Jun 3, 2011 · N316BR · Substantial damage
  > The floatplane's collision with a submerged object during a water landing.
- [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 WPR11FA170](https://openairdocs.org/ntsb/WPR11FA170.md): Cessna T310R · Butte, MT · Accident · 1 fatal · Field investigation · Final report · Mar 19, 2011 · N4914A · Substantial damage
  > The pilot's loss of airplane control during the missed approach for undetermined reasons. Contributing to the accident was the rapid and unforecast deterioration of the weather conditions to below the landing minimum and the pilot's decision to attempt the…
- [NTSB WPR11CA109](https://openairdocs.org/ntsb/WPR11CA109.md): Cessna 180H · Helena, MT · Accident · No injuries · Data collection · Final report · Jan 26, 2011 · N9067M · Substantial damage
  > The certified flight instructor's loss of airplane control during the landing roll in a gusting crosswind.
- [NTSB WPR11CA101](https://openairdocs.org/ntsb/WPR11CA101.md): Bell 206B3 · Three Forks, MT · Accident · No injuries · Data collection · Final report · Jan 15, 2011 · N78BR · Substantial damage
  > The pilot’s inadequate use of throttle during the practice autorotation that resulted in a hard landing.

## 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 year(c."eventDate") = 2011
  AND c."eventStateOrRegion" = 'MT' AND c."eventCountry" = 'USA'
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?state=MT&year=2011

---
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.