# SDR 135N69SC

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 12, 2007
- Submitted: June 20, 2007
- Operation: Air carrier
- Aircraft: N69SC
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0041
- Aircraft time: 23,072 hours
- Engine: Cont TSIO520VB
- Engine time: 1,389 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Condition: Failed
- Location: Nr 6
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/135N69SC

## Discrepancy

LEFT ENGINE FAILURE WITH CASE PENETRATION BELIEVED TO BE CAUSED BY A VALVE FAILURE AT THE NR 6 CYLINDER.  A TCM ENGINEER WAS ON HAND AT THE TIME AND THE ENGINE HAS BEEN SENT TO TCM FOR TEARDOWN.  LEFT ENGINE WAS REMOVED AND REPLACED AS A CORRECTIVE ACTION ON 6/13/2007.

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