# SDR 2012FA0000578

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2012
- Submitted: August 19, 2012
- Operation: General aviation
- Aircraft: [N322MS](https://openairdocs.org/aircraft/N322MS), registered now
- Make and model: Cirrus SR22
- Registry model: [Cirrus SR22](https://openairdocs.org/model/cirrus-design-sr22) (OpenAirDocs)
- Aircraft serial: 3583
- Engine: Cont IO550N
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: RHB32S
- Condition: Cracked
- Location: Engine
- Part time: 300 hours
- Stage of operation: TO
- How discovered: O
- Nature of condition: R
- Precautionary procedure: E, C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2012FA0000578

## Discrepancy

ENGINE START NORMAL.  MAGNETO CHECK ON RUNUP REVEALED ROUGH RUNNING AND MAG CHECK FAILED ON SEVERAL CYLINDERS.  REMOVED THE PLUGS - CRACKS FOUND ALL AROUND THE INSULATOR.   RHB32S IS CURRENTLY IN THE ENGINE.  HAVE BEEN FINDING SEVERAL OF THESE ON MULTIPLE AIRCRAFT - BOTH NA AND TURBO. THE ISSUE IS ISOLATED TO THE BRAND.

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