# SDR 02783

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2007
- Submitted: September 20, 2007
- Operation: Air carrier
- Aircraft: [N633SR](https://openairdocs.org/aircraft/N633SR), registered now
- Make and model: Cirrus SR22
- Registry model: [Cirrus SR22](https://openairdocs.org/model/cirrus-design-sr22) (OpenAirDocs)
- Aircraft serial: 2014
- Aircraft time: 978 hours
- Engine: Cont IO550N
- Engine time: 978 hours
- Propeller: Hartzl PHCJ3YF1
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: RHB32S
- Condition: Broken
- Location: Nr 1 Cylinder
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/02783

## Discrepancy

DURING CRUISE FLIGHT FROM KPDK TO KGEV, THE ENGINE DEVELOPED A VIBRATION AND AIRCRAFT WAS LANDED AT KMRN.  TWO PASSENGERS ONBOARD AND LANDED WITHOUT INCIDENT.  IT WAS FOUND TO BE A NR 1 CYLINDER SPARK PLUG WITH A BROKEN INSULATOR CAUSING THE ROUGH RUNNING AND VIBRATION.

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