# SDR 99ZZZX4139

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N761PS](https://openairdocs.org/aircraft/N761PS), registered now
- Make and model: Cessna 210M
- Registry model: [Cessna 210M](https://openairdocs.org/model/cessna-210m) (OpenAirDocs)
- Aircraft serial: 21062415
- Engine: Cont IO520L
- System (JASC): [7421 · Spark Plug/Igniter](https://openairdocs.org/jasc/7421)
- Part: Spark Plug
- Part number: RBH32E
- Condition: Mismanufactured
- Location: Engine
- Component: Champion
- Stage of operation: IN
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX4139

## Discrepancy

UPON INSPECTION OF PLUGS, FOUND PLUGS, 4 EACH, TO TEST WEAK AND NOT APPROPRIATE FOR INSTALLATION ON AIRCRAFT.  NOTE:  BY DOM AIR CARRIERS, ONE OF THE FOUR SPARK PLUGS HAD A RED DISCOLORATION AT BASE OF ELECTRODE AND CERAMIC.  LOT NR 4G99.

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