# NTSB investigations: Lycoming IO-320 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 WPR20LA308](https://openairdocs.org/ntsb/WPR20LA308.md): Piper PA 30 · Billings, MT · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 12, 2020 · N7602Y · Substantial damage
  > The pilot’s improper fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.
- [NTSB WPR14LA269](https://openairdocs.org/ntsb/WPR14LA269.md): Piper PA 30 · Kalispell, MT · Accident · Minor injuries · Limited investigation · Final report · Jun 25, 2014 · N7350Y · Substantial damage
  > The pilot’s inadequate preflight planning and checks, during which he failed to determine the quantity and distribution of the fuel, which resulted in the loss of right engine power during takeoff due to fuel starvation.
- [NTSB SEA08LA048](https://openairdocs.org/ntsb/SEA08LA048.md): Piper PA-30 · Bridger, MT · Accident · No injuries · Limited investigation · Final report · Dec 16, 2007 · N7252Y · Substantial damage
  > The landing gear collapsed during landing for undetermined reasons.
- [NTSB SEA01LA023](https://openairdocs.org/ntsb/SEA01LA023.md): Piper PA-30 · Stevensville, MT · Accident · No injuries · Limited investigation · Final report · Nov 17, 2000 · N7062Y · Substantial damage
  > Fatigue of the right propeller blade resulting in an in-flight separation of the blade tip. A contributing factor was the improper maintenance procedure.
- [NTSB SEA91FA073](https://openairdocs.org/ntsb/SEA91FA073.md): Piper PA-30 · Butte, MT · Accident · 1 fatal · Field investigation · Final report · Mar 29, 1991 · N7133Y · Substantial damage
  > Inadequate inflight decisions, fuel starvation, and failure to perform alternative IFR approach procedures. Factors include operation with known deficiencies in equipment, disorientation, and lack of familiarity with the geographic area.
- [NTSB DEN82FTI05](https://openairdocs.org/ntsb/DEN82FTI05.md): Piper PA-30 · Sheridan, MT · Accident · Minor injuries · Closed · Oct 31, 1981 · N7306Y · Substantial damage
- [NTSB DEN80FTI10](https://openairdocs.org/ntsb/DEN80FTI10.md): Piper PA-30 · Great Falls, MT · Accident · No injuries · Closed · Jun 22, 1980 · N8817Y · Substantial damage
- [NTSB SEA79FA040](https://openairdocs.org/ntsb/SEA79FA040.md): Bellanca 7KCAB · Laurel, MT · Accident · 1 fatal · Closed · Jun 22, 1979 · N1833G · Destroyed
- [NTSB SEA78FTI21](https://openairdocs.org/ntsb/SEA78FTI21.md): Bellanca 7KCAB · Pray, MT · Accident · 2 fatal · Closed · May 29, 1978 · N8527 · Destroyed
- [NTSB SEA72FTI18](https://openairdocs.org/ntsb/SEA72FTI18.md): Piper PA-30 · Thmpson Flls, MT · Accident · No injuries · Closed · May 12, 1972 · N7788Y · Substantial damage
- [NTSB SEA68D0194](https://openairdocs.org/ntsb/SEA68D0194.md): Piper PA-30 · Laurel, MT · Accident · No injuries · Closed · Oct 26, 1967 · N7840Y · Substantial damage
- [NTSB SEA67F0193](https://openairdocs.org/ntsb/SEA67F0193.md): Piper PA-30 · Billings, MT · Accident · No injuries · Closed · Nov 12, 1966 · N7730Y · Substantial damage
- [NTSB UNK65X0758](https://openairdocs.org/ntsb/UNK65X0758.md): Piper PA-30 · Miles City, MT · Accident · No injuries · Closed · Nov 20, 1964 · N7318Y · 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 ('41509'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41509&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.