# SDR HYIA20180803002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2018
- Submitted: May 11, 2022
- Operation: Air carrier
- Aircraft: [N68391](https://openairdocs.org/aircraft/N68391), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: C4020629
- Aircraft time: 15,574 hours
- Engine: Cont TSIO520VB
- Engine time: 3,323 hours
- System (JASC): [7100 · Powerplant System](https://openairdocs.org/jasc/7100)
- Part: Engine
- Condition: Making Metal
- Location: Left
- Stage of operation: NR
- How discovered: O
- Nature of condition: R, K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HYIA20180803002

## Discrepancy

PILOT REPORTED LT ENGINE HAD PARTIAL POWER, THEN NOTICED OIL COMING FORM COWLING UNDER THE TURBO. MAINTENANCE INSPECTED AND FOUND METAL CONTAMINATION IN ENGINE OIL FILTER AND THE #5 CYLINDER SHOWING SIGNS OF
PRE-IGNITION. THE ENGINE IS TO BE REPLACED.

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