# SDR ECPR2018040378460

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2018
- Submitted: April 3, 2018
- Operation: General aviation
- Aircraft: [N300DC](https://openairdocs.org/aircraft/N300DC), registered now
- Make and model: Piper PA-28-161
- Registry model: [Piper PA-28-161](https://openairdocs.org/model/piper-pa-28-161) (OpenAirDocs)
- Aircraft serial: 2842180
- Aircraft time: 8,010 hours
- Engine: Lyc O320D3G
- Engine time: 4,055 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Part number: LW12416
- Condition: Cracked
- Location: Nr 4 Cylinder
- Part time: 1,989 hours
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ECPR2018040378460

## Discrepancy

DURING A SCHEDULED INSPECTION, FOUND THAT THE NR 4 CYLINDER HAD LOW COMPRESSION.  INVESTIGATION FOUND THE CYLINDER HEAD WAS CRACKED AROUND THE INTAKE VALVE SEAT AND THROUGH THE CYLINDER HEAD WALL OUT BETWEEN THE CYLINDER COOLING FINS.

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