# NTSB investigations: Piper J3C-65: Powerplant sys/comp malf/fail

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 WPR23LA215](https://openairdocs.org/ntsb/WPR23LA215.md): Piper J3C-65 · Belfair, WA · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 4, 2023 · N77583 · Substantial damage
  > The total loss of engine power due to the fatigue failure of the crankshaft accessory drive gear.
- [NTSB CEN23LA218](https://openairdocs.org/ntsb/CEN23LA218.md): Piper J3C · Romeoville, IL · Incident · No injuries · Class 3 · Limited · Final report · Apr 27, 2023 · N6384H · Minor damage
  > The inflight failure of the propeller blade due to fatigue cracking from corrosion pits, initiating at the midpoint of the cambered face.
- [NTSB CEN21LA359](https://openairdocs.org/ntsb/CEN21LA359.md): Piper J3C-65 · Gosport, IN · Accident · No injuries · Class 3 · Limited · Final report · Aug 6, 2021 · N6269H · Substantial damage
  > A total loss of engine power during cruise flight due to the failure of a cylinder exhaust valve stem, which led to a forced landing during which the airplane impacted terrain.
- [NTSB CEN19TA293](https://openairdocs.org/ntsb/CEN19TA293.md): Piper J3C · Russiaville, IN · Accident · No injuries · Class 3 · Final report · Aug 25, 2019 · N49614 · Substantial damage
  > The pilot's failure to reinstall the oil cap after adding oil, which resulted to oil starvation and a precaautionary landing.
- [NTSB ERA17LA275](https://openairdocs.org/ntsb/ERA17LA275.md): Piper J3C · Salisbury, CT · Accident · Minor injuries · Limited investigation · Final report · Aug 13, 2017 · N98550 · Substantial damage
  > An improper replacement of the crankshaft by maintenance personnel, which resulted in a failure of the crankshaft gear and total loss of engine power.
- [NTSB ERA11LA379](https://openairdocs.org/ntsb/ERA11LA379.md): Piper J3C-65 · Egremont, MA · Accident · Minor injuries · Limited investigation · Final report · Jul 5, 2011 · N98550 · Substantial damage
  > A partial loss of engine power due to the No. 4 intake and exhaust valves becoming lodged in the valve guides, which resulted from a lack of use, improper engine storage preparation, and improper return to service from indefinite storage.

## 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 ('7100510')
    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" = '340' 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/340/sequence?model=7100510

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