# SDR 95ZZZX6013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N3809S](https://openairdocs.org/aircraft/N3809S), registered now
- Make and model: Cessna 172E
- Registry model: [Cessna 172E](https://openairdocs.org/model/cessna-172e) (OpenAirDocs)
- Aircraft serial: 1725109
- Engine: Cont O300D
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Guide
- Part number: 24047
- Condition: Defective
- Location: Nr 2 Cyl Exh
- Part time: 284 hours
- Stage of operation: NR
- Nature of condition: E, R
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX6013

## Discrepancy

PILOT REPORTED ENGINE RUNNING ROUGH.  COMPRESSION CHECK CYLINDERS, ALL 70/80 OR BETTER.  SPARK PLUG INSPECTION SHOWED NR 2 CYLINDER NOT FIRING PROPERLY.  FOUND NR 2 EXHAUST VALVE STICKING.  REAMED GUIDE AND RETURNED TO SERVICE.

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