# SDR 2009FA0000841

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2008
- Submitted: October 13, 2009
- Operation: General aviation
- Aircraft: [N54DR](https://openairdocs.org/aircraft/N54DR), registered now
- Make and model: Cessna 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (OpenAirDocs)
- Aircraft serial: 421B0406
- Aircraft time: 7,010 hours
- Engine: Cont GTSIO520C
- Engine time: 826 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Condition: Cracked
- Location: Engine
- 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/2009FA0000841

## Discrepancy

12/25/08 6 CRACKED TCM CYLINDERS WERE REPLACED.

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