# NTSB investigations, MT: Loss of engine power(partial) - mech failure/malf

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 SEA05LA032](https://openairdocs.org/ntsb/SEA05LA032.md): Aerostar 601 · Hamilton, MT · Accident · No injuries · Limited investigation · Final report · Dec 30, 2004 · N601DF · Destroyed
  > A partial loss of engine power due to the lack of lubrication and subsequent failure of the left engine's right turbocharger for undetermined reasons, and subsequent forced landing after takeoff. A factor was the unsuitable terrain for the forced landing.
- [NTSB SEA97LA116](https://openairdocs.org/ntsb/SEA97LA116.md): Piper PA-28-140 · Hysham, MT · Accident · Minor injuries · Limited investigation · Final report · May 20, 1997 · N32142 · Substantial damage
  > A failure of an engine exhaust valve and the pilot's misjudgement of altitude/distance during an emergency landing at an airstrip.
- [NTSB SEA91LA190](https://openairdocs.org/ntsb/SEA91LA190.md): Fleet FL-80 · Havre, MT · Accident · Minor injuries · Limited investigation · Final report · Jul 20, 1991 · CFDPZ · Substantial damage
  > The engine driven fuel injection pump metering valve shaft was loose. A factor to the accident was: inadequate annual inspection.
- [NTSB DEN88FA097](https://openairdocs.org/ntsb/DEN88FA097.md): Cessna 150 · Deer Lodge, MT · Accident · 2 fatal · Field investigation · Final report · Apr 15, 1988 · N13788 · Destroyed
- [NTSB DEN87LA179](https://openairdocs.org/ntsb/DEN87LA179.md): Cessna 175 · Kalispell, MT · Accident · Minor injuries · Limited investigation · Final report · Jul 11, 1987 · N9201B · Substantial damage
  > The pvt plt was on a x-country flight. The engine began running rough, made a 'bang' sound and lost partial power. Smoke entered the cockpit, oil pressure was lost and the plt initiated an emergency landing. The acft ldg gr struck powerlines on approach to a…
- [NTSB DEN86LA236](https://openairdocs.org/ntsb/DEN86LA236.md): Mayala Dragonfly · Helena, MT · Accident · Serious injuries · Limited investigation · Final report · Aug 25, 1986 · N4478V · Substantial damage
  > The acft was on final apch after completing a x-country from billings, MT, when the accident occurred. The plt stated the acft was low after intercepting the VASI so power was added; however, the eng did not respond. The acft struck a small hill 300 ft short…
- [NTSB DEN85LA218](https://openairdocs.org/ntsb/DEN85LA218.md): Downer Aircraft Industries REP. Seabee RC-3 · Haugan, MT · Accident · No injuries · Limited investigation · Final report · Aug 13, 1985 · N6305K · Substantial damage
  > The plt had reconditioned N6305K and was flying the acft to his home in Texas. He continued to state that while climbing through 6500 ft, he heard an unusual noise followed by a substantial loss in pwr. The plt executed an emergency landing on a forest…
- [NTSB DEN84LA240](https://openairdocs.org/ntsb/DEN84LA240.md): Cessna 310Q · Havre, MT · Accident · No injuries · Limited investigation · Final report · Jul 27, 1984 · CGONG · Substantial damage
  > During cruise flight with five adults and two infants on board, the pilot noted left engine oil pressure decreasing and a visible oil leak. Engine shutdown and propeller feather were accomplished but altitude could not be maintained. A forced landing was…
- [NTSB DEN82DA060](https://openairdocs.org/ntsb/DEN82DA060.md): Cessna 170B · Worden, MT · Accident · No injuries · Final report · Apr 15, 1982 · N3415D · Substantial damage
  > The pilot reported that the carburetor heat control became inoperative while on a cross-country flight. The weather conditions were conducive to the formation of carburetor ice. A decision was made to land in an alfalfa field while the engine was still…

## 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 o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 352)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=352&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.