# SDR WS9R2010FA0000466

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2010
- Submitted: May 14, 2010
- Operation: General aviation
- Filed by: [Western Skyways Inc, repair station WS9R575J](https://openairdocs.org/faa-repair-station/WS9R575J/western-skyways-inc.md) (OpenAirDocs)
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Camshaft
- Part number: SL16511
- Condition: Damaged
- Location: Engine
- Stage of operation: IN
- How discovered: 9
- Nature of condition: C
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WS9R2010FA0000466

## Discrepancy

((WS9R)) FOUND ABRASIVE MEDIA TRAPPED BETWEEN THE NR 4 EXHAUST LOBE AND THE FWD THRUST SURFACE OF THE CAMSHAFT.  ALSO, BY USING A 10X MAGNIFYING GLASS, FOUND THAT THE CAM LOBES AND MACHINED BEARING SURFACES WERE ROUGH AS IF DAMAGED BY ABRASIVE MEDIA BLASTING.

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