# SDR 2015FA0000601

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2015
- Submitted: November 20, 2015
- Operation: General aviation
- Aircraft: [N185PR](https://openairdocs.org/aircraft/N185PR), registered now
- Make and model: Cessna A185F
- Registry model: [Cessna A185F](https://openairdocs.org/model/cessna-a185f) (OpenAirDocs)
- Aircraft serial: 18502889
- Engine: Cont IO520D
- System (JASC): [8500 · Engine (Reciprocating)](https://openairdocs.org/jasc/8500)
- Part: Lifter
- Condition: Spalled
- Location: Engine
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2015FA0000601

## Discrepancy

UNDER NORMAL OPERATIONS THE ENGINE DEVELOPED ALMOST ALL SPALLED VALVE LIFTERS AND CAM TO THE DEGREE NEEDING REPLACEMENT OF ALL LIFTERS AND THE CAM.  TIME SINCE REBUILD 1092 HRS.  THIS IS THE 3RD ENGINE TO SUFFER THIS TYPE OF OCCURRENCE IN 3 YRS.  CAUSE IS UNKNOWN.  FACTORY REP WAS CONSULTED.

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