# SDR 2013FA0000153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 2013
- Submitted: March 8, 2013
- Operation: General aviation
- Aircraft: [N558TH](https://openairdocs.org/aircraft/N558TH), registered now
- Make and model: Beech 58
- Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (OpenAirDocs)
- Aircraft serial: TH2000
- Engine: Cont IO550C
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Gear
- Part number: 656031
- Condition: Worn
- Location: Camshaft
- Part time: 2,158 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/2013FA0000153

## Discrepancy

UPON REMOVAL FROM ENGINES, IT WAS DISCOVERED THAT BOTH CAM GEARS SHOWED EXCESSIVE WEAR ON 2-3 TEETH.  THE CAUSE FOR THIS WEAR CANNOT
BE DETERMINED.  A SUGGESTION FOR PREVENTION WOULD NOT BE POSSIBLE.

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