# SDR CA960222201

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 29, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Cessna 340A
- Registry model: [Cessna 340A](https://openairdocs.org/model/cessna-340a) (OpenAirDocs)
- Engine: Cont TSIO520N
- Propeller: Mcauly 3AF32C93
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Main Bearing
- Condition: Fretted
- Location: #2 Bearing
- Stage of operation: CR
- Nature of condition: E, Y
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA960222201

## Discrepancy

(CAN) DURING CRUISE ENGINE STARTED TO VIBRATE AND THEN STOPPED. AIRCRAFT RETURNED TO ORIGIN AND LANDED SAFELY. IT WAS DISCOVERED THAT ENGINE HAD STOPPED DUE TO #2 MAIN BEARING FAILURE. TEARDOWN REVEALED THAT THE #2 BEARING HAD TURNED IN THE CRANKCASE STOPPING THE OIL FROM FLOWING TO THE NUMBER 2 CONNECTING ROD. THE CONNECTING ROD THEN FAILED AND DAMAGED THE CRANKCASE, CAMSHAFT AND CYLINDERS. THIS CAUSED THE ENGINE TO QUIT RUNNING.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.