# SDR HYIA20171226001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 2017
- Submitted: December 26, 2017
- Operation: Air carrier
- Aircraft: N4652N
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0011
- Aircraft time: 27,211 hours
- Engine: Cont TSIO520VB
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 658552A1
- Part serial: AC14KA117
- Condition: Failed
- Location: Nr 3
- Part time: 2,253 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HYIA20171226001

## Discrepancy

PILOT REPORTED RIGHT ENGINE RUNNING ROUGH. UPON INSPECTION FOUND THE RIGHT ENGINE NR 3 CYLINDER TO HAVE LOW COMPRESSION AND THE CYLINDER EXHAUST VALVE TO HAVE EVIDENCE OF A BURNING. THE CYLINDER WAS REPLACED.

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