# NTSB investigations: Lycoming R680: Loss of engine power (partial)

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 WPR23LA307](https://openairdocs.org/ntsb/WPR23LA307.md): Boeing A75N1(PT17) · Red Lodge, MT · Accident · No injuries · Class 3 · Limited · Final report · Aug 8, 2023 · N56907 · Substantial damage
  > A partial loss of engine power during the initial climb out due to improper maintenance of the magneto.
- [NTSB ERA21LA304](https://openairdocs.org/ntsb/ERA21LA304.md): Boeing B75N1 · Lexington, KY · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 28, 2021 · N1720B · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB ERA20LA326](https://openairdocs.org/ntsb/ERA20LA326.md): Stearman E75 · Honea Path, SC · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 21, 2020 · N1524M · Destroyed
  > The partial loss of engine power due to the fatigue failure of an engine cylinder and the pilot’s subsequent decision to overfly several suitable forced-landing sites while attempting to return to the departure airstrip.
- [NTSB CEN13LA068](https://openairdocs.org/ntsb/CEN13LA068.md): Boeing A75L3 · San Antonio, TX · Accident · Minor injuries · Limited investigation · Final report · Nov 20, 2012 · N56226 · Substantial damage
  > A partial loss of engine power during takeoff, likely due to the accumulation of carburetor ice.
- [NTSB CEN10LA340](https://openairdocs.org/ntsb/CEN10LA340.md): Boeing A75L300 · Salina, KS · Accident · No injuries · Limited investigation · Final report · Jun 4, 2010 · N75263 · Substantial damage
  > A partial loss of engine power after takeoff due to thermal damage to three cylinders for undetermined reasons. Contributing to the accident was a lack of suitable terrain for a forced landing.
- [NTSB ERA09LA433](https://openairdocs.org/ntsb/ERA09LA433.md): Boeing A75N1 · Livermore Falls, ME · Accident · No injuries · Limited investigation · Final report · Aug 1, 2009 · N49778 · Substantial damage
  > A loss of engine power for undetermined reasons.

## 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 ('41540')
    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" = '342'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/342/cases?engine=41540

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