# SDR 2014FA0000613

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2014
- Submitted: October 21, 2014
- Operation: General aviation
- Aircraft: [N563ND](https://openairdocs.org/aircraft/N563ND), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S10788
- Aircraft time: 4,886 hours
- Engine: Lyc IO360L2A
- Engine time: 2,331 hours
- Propeller: Mcauly 1A170E
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Roller
- Part number: LRT23381
- Condition: Broken
- Location: Nr 1 Intake Tap
- Part time: 2,331 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, E, K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2014FA0000613

## Discrepancy

PILOT NOTED ENGINE VIBRATION AND PARTIAL POWER LOSS.  UPON LANDING, FOUND EXCESSIVE OIL LEAKING FROM ENGINE. DURING TROUBLESHOOTING INSPECTION,  FOUND NR 1 CYLINDER INTAKE VALVE PUSH ROD AND HOUSING BENT. AFTER REMOVING CYLINDER,  THE NR 1 INTAKE ROLLER TAPPET WAS FOUND TO BE BROKEN ON ONE ROLLER SUPPORT ARM AND ROLLER DISLODGED.  ENGINE WAS REMOVED FROM AIRCRAFT.

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