# SDR 2006FA0000077

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2006
- Submitted: January 25, 2006
- Operation: General aviation
- Aircraft: [N7209B](https://openairdocs.org/aircraft/N7209B), registered now
- Make and model: Beech 58
- Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (OpenAirDocs)
- Aircraft serial: TH1428
- Engine: Cont IO520C
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Part number: SA52000
- Part serial: 22521
- Condition: Separated
- Location: Engine
- Part time: 992 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2006FA0000077

## Discrepancy

APPEAR THAT THERE WAS A CRACK IN THE CYLINDER HEAD AT THE EXHAUST VALVE SEAT, WHICH PROPOGATED DURING OPERATION UNTIL THE CYLINDER HEAD FAILED AND SEPARATED FROM THE CYLINDER.  (K)

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