# SDR 2011FA0000794

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2011
- Submitted: December 16, 2011
- Operation: General aviation
- Aircraft: [N225KW](https://openairdocs.org/aircraft/N225KW), registered now
- Make and model: Columb LC40550FG300
- Aircraft serial: 41671
- Aircraft time: 473 hours
- Engine: Cont TSIO550C
- Engine time: 473 hours
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: RHB32S
- Condition: Defective
- Location: Cylinder
- Part time: 473 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/2011FA0000794

## Discrepancy

PILOT REPORTED HIGH MAGNETO DROP DURING PRE-RUN CHECK. NR 3 CYLINDER BOTTOM SPARK PLUG WAS FOUND TO HAVE ENTIRE CERAMIC MISSING.  BORESCOPE OF CYLINDER REVEALED NO INTERNAL DAMAGE.

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