# SDR DSFA20151026001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2015
- Submitted: October 26, 2015
- Operation: Air carrier
- Aircraft: [N405S](https://openairdocs.org/aircraft/N405S), 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: 2890015
- Aircraft time: 9,333 hours
- Engine: Lyc AEIO360*
- Engine time: 2,230 hours
- Propeller: Snsnch 76EM8S5
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Condition: Cracked
- Location: Engine
- Part time: 786 hours
- Stage of operation: TO
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DSFA20151026001

## Discrepancy

OUR ACFT DEPARTED WITH ONLY THE PILOT ON BOARD.  THE ENG LOST PARTIAL POWER SO HE RETURNED.  UPON INVESTIGATION CYLINDER 2 HAD NO COMPRESSION & WAS CRACKED HALF WAY AROUND THE CYLINDER HEAD.  CYLINDER 4 WAS FOUND TO HAVE SOMEWHAT NORMAL COMPRESSION BUT DID INDICATE A LEAK & SMALL CYLINDER HEAD CRACK ALSO.  IAW MFG TECH SERVICES, REPLACED ALL FOUR CYLINDERS WITH NEW MFG KITS.

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