# SDR FQAR20150526056

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2015
- Submitted: May 27, 2015
- Operation: General aviation
- Aircraft: [N425PA](https://openairdocs.org/aircraft/N425PA), registered now
- Make and model: Piper PA-28-181
- Registry model: [Piper PA-28-181](https://openairdocs.org/model/piper-pa-28-181) (OpenAirDocs)
- Aircraft serial: 2843474
- Aircraft time: 15,430 hours
- Engine: Lyc O360A4M
- Propeller: Snsnch 76EM8S5
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Part number: SL36006WA20P
- Part serial: 366WB1315461
- Condition: Cracked
- Location: Nr 1
- Part time: 1,744 hours
- Stage of operation: IN
- How discovered: B
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FQAR20150526056

## Discrepancy

BORESCOPE EXAMINATION REVEALED THE NR 1 CYLINDER HEAD WAS CRACKED.  AFTER THE CYLINDER WAS REMOVED, CRACKING WAS SEEN AT THE LOWER SPARK PLUG HOLE. THE CYLINDER HEAD CASTING NR C-01420.

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