# SDR 2009FA0000932

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2009
- Submitted: October 27, 2009
- Operation: General aviation
- Aircraft: [N340CR](https://openairdocs.org/aircraft/N340CR), registered now
- Make and model: Cessna 340A
- Registry model: [Cessna 340A](https://openairdocs.org/model/cessna-340a) (OpenAirDocs)
- Aircraft serial: 340A0466
- Engine: Cont TSIO520*
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Condition: Failed
- Location: Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2009FA0000932

## Discrepancy

PROBLEM ORIGINATED FROM A ROUGH RUNING ENGINE CAUSED BY BROKEN CYLINDER VALVE SPRINGS.  CYLINDER WAS REMOVED FOR REPAIR AT THIS TIME SPALLED CAMSHAFT AND LIFTERS WERE OBSERVED NECESSITATING A COMPLETE ENGINE TEARDOWN WHICH EXPOSED THE ADDITIONAL PARTS WITH CORROSION ON THEM.

---
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.