# NTSB investigations: Mooney M20J: 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 WPR26LA197](https://openairdocs.org/ntsb/WPR26LA197.md): Mooney M20J · Lake Havasu City, AZ · Accident · Serious injuries · Class 3 · Limited · Preliminary report · May 14, 2026 · N4665H · Substantial damage
  > On May 14, 2026, at 1523, a Mooney M20J, N4665H, was substantially damaged when it was involved in an accident near Lake Havasu City, Arizona. The pilot and two passengers sustained serious injuries. The airplane was operated under Title 14 Code of Federal…
- [NTSB WPR21FA272](https://openairdocs.org/ntsb/WPR21FA272.md): Mooney M20J · Dinsmore, CA · Accident · 4 fatal · Class 3 · Field · Final report · Jul 15, 2021 · N4474H · Destroyed
  > The airplane’s degraded engine performance due to wear to the intake cam lobes, which diminished the airplane’s takeoff and climb performance, resulting in a subsequent collision with trees.
- [NTSB ERA13LA342](https://openairdocs.org/ntsb/ERA13LA342.md): Mooney M20J · Leonardtown, MD · Accident · Minor injuries · Limited investigation · Final report · Jul 29, 2013 · N4570H · Substantial damage
  > The improper installation and inspection of the throttle linkage by maintenance personnel, which resulted in the throttle linkage coming loose and a subsequent partial loss of engine power.
- [NTSB WPR11FA114](https://openairdocs.org/ntsb/WPR11FA114.md): Mooney M20J · Furnace Creek, CA · Accident · 1 fatal · Field investigation · Final report · Jan 29, 2011 · N50BJ · Substantial damage
  > The magneto clamps were not securely fastened to the mount, which led to a partial loss of engine power and a subsequent forced landing on unsuitable terrain.
- [NTSB WPR09LA254](https://openairdocs.org/ntsb/WPR09LA254.md): Mooney M20J · Healdsburg, CA · Accident · No injuries · Limited investigation · Final report · May 21, 2009 · N4718H · Substantial damage
  > A partial loss of engine power during the takeoff initial climb for undetermined reasons.
- [NTSB ERA09LA264](https://openairdocs.org/ntsb/ERA09LA264.md): Mooney M20J · Moncks Corner, SC · Accident · No injuries · Limited investigation · Final report · Apr 24, 2009 · N201JT · Substantial damage
  > The reported partial 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.aircraft_model_code IN ('5870219')
    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=5870219

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