# SDR 2002FA0000830

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2002
- Submitted: July 17, 2002
- Operation: General aviation
- Aircraft: [N146AC](https://openairdocs.org/aircraft/N146AC), registered now
- Make and model: Cessna R172E
- Registry model: [Cessna R172E](https://openairdocs.org/model/cessna-r172e) (OpenAirDocs)
- Aircraft serial: R1720147
- Aircraft time: 9,864 hours
- Engine: Cont IO360DB
- Engine time: 1,051 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Piston Pin
- Condition: Failed
- Location: Nr 6 Cylinder
- Part time: 1,051 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2002FA0000830

## Discrepancy

ENGINE OIL FILTER INSPECTED DURING 100 HOUR INSPECTION, FOUND EXCESSIVE AMOUNT OF ALUMINUM FLAKES IN FILTER.  CAUSE OF METAL IN OIL FILTER TRACED TO NR 6 CYLINDER PISTON PIN PLUG.  WHEN CYLINDER WAS REMOVED THE FWD PLUG HAD EXCESSIVE WEAR.  THIS WAS A FACTORY REMANUFACTURED ENGINE AND THIS CYLINDER WAS NOT REMOVED SINCE REMANUFACTURE.   THE PISTON PIN PLUGS WERE REPLACED AND THE CYLINDER OVERHAULED & REINSTALLED.  NO MORE METAL HAS BEEN DETECTED IN THE OIL FILTER.

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