# SDR ECPR2018020578024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2018
- Submitted: March 29, 2018
- Operation: General aviation
- Aircraft: [N551PU](https://openairdocs.org/aircraft/N551PU), 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: 2842088
- Aircraft time: 11,828 hours
- Engine: Lyc O320D3G
- Engine time: 4,380 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Part number: LW12416
- Condition: Cracked
- Location: Nr 1 Cylinder
- 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/ECPR2018020578024

## Discrepancy

DURING A SCHEDULED INSPECTION IT WAS FOUND THAT THE NR 1 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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