# SDR 2011FA0000500

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2011
- Submitted: August 5, 2011
- Operation: General aviation
- Aircraft: [N4148V](https://openairdocs.org/aircraft/N4148V), registered now
- Make and model: Piper PA-28-181
- Registry model: [Piper PA-28-181](https://openairdocs.org/model/piper-pa-28-181) (OpenAirDocs)
- Aircraft serial: 2843178
- Engine: Lyc O360A4M
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Tappet
- Part number: 15B26064
- Condition: Making Metal
- Location: Engine Case
- Part time: 222 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011FA0000500

## Discrepancy

THE PILOT REPORTED THAT THE ENGINE BEGAN RUNNING ROUGH IN FLIGHT.  THE AIRPLANE WAS TAKEN TO THE SHOP FOR INSP AND THE TECH FOUND THE NR 4 EXHAUST VALVE TAPPET FACE AND THE NR 2 INTAKE TAPPET FACE WERE MAKING METAL.  THE ENGINE WAS REMOVED FROM THE ACFT FOR REPAIRS.

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