# NTSB investigations: Lycoming HIO-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 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 WPR13CA253](https://openairdocs.org/ntsb/WPR13CA253.md): Schweizer 300C · Hamilton, MT · Accident · No injuries · Data collection · Final report · May 1, 2013 · N322MH · Substantial damage
  > The student pilot’s failure to maintain helicopter control during a practice autorotation and the flight instructor's delayed remedial action.
- [NTSB WPR12LA111](https://openairdocs.org/ntsb/WPR12LA111.md): Enstrom F28 · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Feb 20, 2012 · N51727 · Substantial damage
  > A total loss of engine power for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.
- [NTSB SEA07CA220](https://openairdocs.org/ntsb/SEA07CA220.md): Hughes 269C · Three Forks, MT · Accident · No injuries · Data collection · Final report · Jul 30, 2007 · N428MS · Substantial damage
  > The student pilot's failure to maintain control of the aircraft during autorotation. The flight instructor's inadequate supervision was a factor.
- [NTSB SEA05CA149](https://openairdocs.org/ntsb/SEA05CA149.md): Hughes 269A · Laurel, MT · Accident · Minor injuries · Data collection · Final report · Jul 21, 2005 · N801CP · Substantial damage
  > the pilot's failure to maintain rotor rpm while executing a pinnacle approach, which resulted in a loss of control and collision with terrain.
- [NTSB SEA05CA083](https://openairdocs.org/ntsb/SEA05CA083.md): Hughes 269A · Whitefish, MT · Accident · No injuries · Data collection · Final report · Apr 17, 2005 · N7054C · Substantial damage
  > The student pilot's failure to maintain control of the helicopter while hovering resulting in an in-flight collision with terrain. Gusting winds and the student pilot's inadequate compensation for the wind conditions were contributing factors.
- [NTSB SEA02LA075](https://openairdocs.org/ntsb/SEA02LA075.md): Enstrom F-28C · Hot Springs, MT · Accident · No injuries · Limited investigation · Final report · Apr 20, 2002 · N51769 · Substantial damage
  > The pilot's failure to adequately compensate for unfavorable wind conditions. Factors include unfavorable/shifting winds, and a tailwind gust.
- [NTSB SEA78FTI16](https://openairdocs.org/ntsb/SEA78FTI16.md): Enstrom F-28C · Haugan, MT · Accident · No injuries · Closed · May 20, 1978 · N643H · 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 ('41524'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41524&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.