# SDR 97ZZZX4303

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Cessna 172
- Registry model: [Cessna 172](https://openairdocs.org/model/cessna-172) (OpenAirDocs)
- Engine: Cont O300A
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve
- Condition: Stuck
- Location: Engine Exhaust
- Part time: 3,780 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX4303

## Discrepancy

ENGINE FOUND WITH EXHAUST VALVE STICKING OPEN.  AIRCRAFT HAD BEEN RUN ON AUTO GAS.  SMOH:  925 HOURS.

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