# SDR 2024FA0000501

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2024
- Submitted: July 15, 2024
- Operation: General aviation
- Aircraft: [N345VJ](https://openairdocs.org/aircraft/N345VJ), registered now
- Make and model: Doug DC3C
- Registry model: [Doug DC3C](https://openairdocs.org/model/douglas-dc3c) (OpenAirDocs)
- Aircraft serial: 34378
- Aircraft time: 18,133 hours, 17,781 cycles
- Engine: Pwa R183094
- Engine time: 1,157 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Part number: 84088
- Part serial: VM898
- Condition: Cracked
- Location: Right Engine
- Stage of operation: CR
- How discovered: V
- Nature of condition: R
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2024FA0000501

## Discrepancy

DURING INSPECTION/TROUBLESHOOTING OF ENGINE FOR ROUGH OPERATION/BACKFIRING, FOUND EXHAUST ROCKER LOBE OF THE #9 CYLINDER CRACKED THRU EXHAUST PORT AND AROUND EXHAUST VALVE SEAT. TOTAL TIME OF CYLINDER IS UNKNOWN. ENGINE IS 1157 HOURS SINCE MAJOR OVERHAUL. CYLINDER HAD APPROXIMATELY 300 HOURS SINCE OVERHAUL.

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