# SDR 2005FA0000169

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2004
- Submitted: March 2, 2005
- Operation: General aviation
- Aircraft: [N6484A](https://openairdocs.org/aircraft/N6484A), registered now
- Make and model: Cessna 210N
- Registry model: [Cessna 210N](https://openairdocs.org/model/cessna-210n) (OpenAirDocs)
- Aircraft serial: 21063535
- Engine: Cont IO520L
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Lifter
- Part number: 653877
- Condition: Spalled
- Location: Engine
- Part time: 884 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/2005FA0000169

## Discrepancy

DURING SCHEDULED OIL CHANGE, METAL WAS FOUND IN THE FILTER.  FURTHER INVESTIGATION DISCOVERED THE TAPPETS STARTING TO FAIL.  THIS CONDITION CAN BE A RESULT OF IMPROPER HEAT-TREATING.  WITHOUT BEING FAMILIAR WITH MFG PROCESS, CAN NOT RECOMMEND A PLAN FOR PREVENTIVE ACTION. (K)

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