# SDR CA030211003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2003
- Submitted: March 25, 2003
- Operation: General aviation
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft time: 4,143 hours
- Engine: Lyc O320E2D
- Propeller: Mcauly 1C160DTM
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve Guide
- Condition: Stuck
- Location: Cylinder
- Component: Cylinder, Supac
- Component part number: SL32006WA21P
- Stage of operation: DE
- How discovered: O
- Nature of condition: E, R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA030211003

## Discrepancy

(CAN) IN CRUISE FLIGHT ENGINE STARTED TO RUN ROUGH AND UNABLE TO MAINTAIN POWER ABOVE 1800 RPM. PILOT LANDED WITHOUT PROBLEMS. ON INVESTIGATION NOTICED NR 2 CYLINDER EXHAUST VALVE STUCK OPEN ALSO NOTICED VALVE TAPPET BODY CRACKED. ENGINE WAS REMOVED FOR REPAIR. TAPPET BODY P/N SL72877

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