# NTSB investigations: Franklin 6A4165 series: Loss of engine power (total)

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 WPR26LA183](https://openairdocs.org/ntsb/WPR26LA183.md): Stinson 108-3 · Quilcene, WA · Accident · No injuries · Class 3 · Limited · Preliminary report · May 12, 2026 · N588C · Substantial damage
  > On May 12, 2026, at about 1049 Pacific daylight time, a Stinson 108-3 airplane, N588C, was substantially damaged when it was involved in an accident near Quilcene, Washington. The pilot was uninjured. The airplane was operated as a Title 14 Code of Federal…
- [NTSB ERA22LA333](https://openairdocs.org/ntsb/ERA22LA333.md): Stinson 108 · Batesburg, SC · Accident · No injuries · Class 3 · Limited · Final report · Jul 23, 2022 · N6020M · Substantial damage
  > The fatigue failure of the crankshaft gear, resulting in a total loss of engine power.
- [NTSB ERA20LA320](https://openairdocs.org/ntsb/ERA20LA320.md): Stinson 108 · Newport, PA · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 17, 2020 · N336C · Substantial damage
  > A total loss of engine power during cruise flight due to a disconnected carburetor mixture control cable which allowed the carburetor mixture lever to migrate to the cut-off position during flight.
- [NTSB WPR19LA179](https://openairdocs.org/ntsb/WPR19LA179.md): Stinson 108 · Caldwell, ID · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 27, 2019 · N6116M · Substantial damage
  > A total loss of engine power during approach due to a failed piston. The reason for the piston failure could not be determined based on the available information.
- [NTSB ERA17LA182](https://openairdocs.org/ntsb/ERA17LA182.md): Stinson 108 · West Creek, NJ · Accident · Minor injuries · Limited investigation · Final report · May 17, 2017 · N9366K · Substantial damage
  > A total loss of engine power due to the No. 4 cylinder’s exhaust valve getting stuck and the subsequent fracturing of the valve face stem.
- [NTSB CEN13LA091](https://openairdocs.org/ntsb/CEN13LA091.md): Stinson 108-2 · Halfway, MO · Accident · Minor injuries · Limited investigation · Final report · Dec 5, 2012 · N8775K · Substantial damage
  > The pilot's failure to properly maintain the airplane and engine, which resulted in a total loss of engine power due to improperly installed magnetos and a broken camshaft.
- [NTSB CEN10CA214](https://openairdocs.org/ntsb/CEN10CA214.md): Stinson 108-2 · Dexter, MO · Accident · No injuries · Data collection · Final report · Apr 17, 2010 · N988D · Substantial damage
  > A loss of engine power for an undetermined reason.
- [NTSB WPR09LA382](https://openairdocs.org/ntsb/WPR09LA382.md): Stinson 108-2 · Salt Lake City, UT · Accident · Minor injuries · Limited investigation · Final report · Aug 3, 2009 · N373C · Substantial damage
  > A total loss of engine power during cruise flight due to the failure of the crankshaft gear.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27025')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '341'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/341/cases?engine=27025

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