# NTSB investigations: Mooney M20C: 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 ERA23LA120](https://openairdocs.org/ntsb/ERA23LA120.md): Mooney M20C · Calhoun, GA · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 28, 2023 · N5587Q · Destroyed
  > A partial loss of engine power during the initial climb due to an improperly installed spark plug.
- [NTSB ERA21LA199](https://openairdocs.org/ntsb/ERA21LA199.md): Mooney M20C · Warwick, NY · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 29, 2021 · N6448U · Substantial damage
  > A loose stand-off clamp which resulted in a throttle assembly malfunction, and the inability of the engine to produce full power during the attempted takeoff.
- [NTSB ERA17LA284](https://openairdocs.org/ntsb/ERA17LA284.md): Mooney M20C · Palm Coast, FL · Accident · No injuries · Limited investigation · Final report · Aug 21, 2017 · N6833N · Substantial damage
  > A crack in the No. 4 cylinder head, which resulted in engine roughness, a fuel leak, a loss of engine power, and the subsequent in-flight fire.
- [NTSB ERA15FA049](https://openairdocs.org/ntsb/ERA15FA049.md): Mooney M20C · Lewisburg, WV · Accident · Serious injuries · Field investigation · Final report · Nov 10, 2014 · N6581U · Substantial damage
  > The pilot's failure to maintain airspeed while maneuvering, which resulted in the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall. Contributing to the accident were abnormal engine operation due to improper…
- [NTSB WPR10LA465](https://openairdocs.org/ntsb/WPR10LA465.md): Mooney M20C · Visalia, CA · Accident · No injuries · Limited investigation · Final report · Sep 21, 2010 · N6090Q · Substantial damage
  > A partial loss of engine power during takeoff, which resulted from the failure of the spark plug retention mechanism.
- [NTSB MIA08LA188](https://openairdocs.org/ntsb/MIA08LA188.md): Mooney M20C · Wallace, NC · Accident · Minor injuries · Limited investigation · Final report · Sep 9, 2008 · N21MY · Substantial damage
  > The pilot's failure to abort the takeoff when the engine failed to develop full power. Contributing to the accident was the pilot's failure to remove the intake plugs prior to takeoff.

## 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.aircraft_model_code IN ('5870208')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '342' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/342/sequence?model=5870208

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