# SDR CA050505007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 5, 2005
- Submitted: June 2, 2005
- Operation: General aviation
- Make and model: Cessna U206G
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (OpenAirDocs)
- Aircraft time: 13,331 hours
- Engine: Cont IO520F
- Propeller: Hartzl PHCJ3YF1
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Part number: AEC631397ST712A
- Condition: Cracked
- Location: Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA050505007

## Discrepancy

(CAN) ENGINE EQUIPPED WITH NEW STEEL ENGINE COPONENTS IN (ECI)CYLINDER ASSY'S P/N AEC631397ST71.2A, 606.4 HR TOTAL TIME.  CYLINDER NR 4 WAS FOUND CRACKED IN THE CYLINDER HEAD JUST BELOW TOP SPARK PLUG HOLE. (SDR WAS ISSUED) AT 706.0 HRS CYLINDER 2 AND 6 WERE ALSO FOUND TO BE CRACKED IN THE SAME LOCATION. ALL CYLINDERS WERE CHECKED AGAINST S/N TO COMFIRM THAT THEY WERE NOT AFFECTED BY ECI SB 04-1 (AD 2004-08-10) AND ALL WERE FOUND TO BE NOT APPLICABLE BY THEIR SERIAL NUMBERS.  AS A RESULT OF THE DISCOVERY OF THESE CRACKED CYLINDERS AND THAT ALL CYLINDERS WERE INSTALLED NEW AT ENGINE OVERHAUL.  ALL 5 ORIGINAL INSTALLATION CYLINDERS WILL BE REPLACED WITH NEW CYLINDER ASSY.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.