# SDR 98ZZZX1544

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N21477](https://openairdocs.org/aircraft/N21477), registered now
- Make and model: Cessna 182P
- Registry model: [Cessna 182P](https://openairdocs.org/model/cessna-182p) (OpenAirDocs)
- Aircraft serial: 18261657
- Engine: Cont O470R
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Rocker Boss
- Condition: Failed
- Location: Nr 2 Cyl Exhaust
- Part time: 2,766 hours
- Stage of operation: CL
- Nature of condition: E, R, K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX1544

## Discrepancy

ABOUT 4 MINUTES AFTER TAKEOFF, ENGINE RAN ROUGH.  A NORMAL LANDING WAS MADE.  REMOVED COWL, NR 2 VALVE COVER HAD A 1 INCH HOLE IN IT.  REMOVED VALVE COVER AND FOUND BOTH ROCKER SHAFT FORGED BOSSES BROKEN FOR EXHAUST ROCKER SHAFT.  VALVE WAS NOT STUCK.  PUSH ROD WAS NOT BENT.  OLD AGE?

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