# SDR 2017FA0000348

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2017
- Submitted: August 4, 2017
- Operation: General aviation
- Aircraft: [N669JM](https://openairdocs.org/aircraft/N669JM), registered now
- Make and model: Cessna 340A
- Registry model: [Cessna 340A](https://openairdocs.org/model/cessna-340a) (OpenAirDocs)
- Aircraft serial: 340A0971
- Engine: Cont TSIO520NB
- Propeller: Hartzl PHCC3YF2
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Part number: AEC631397SN712
- Part serial: 9970612
- Condition: Cracked
- Location: Engine
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2017FA0000348

## Discrepancy

CRACKS IN THE HEADS ABOVE THE INTAKE PORT IN BOTH CYLINDERS.  FUEL STAINING ON THE EXTERIOR OF THE HEAD.  THIS IS THE THIRD AND FOURTH CYLINDERS THAT HAVE BEEN REPLACED ON THIS ACFT.  THE EARLIER ONES WERE DONE ON 10/19/15 WITH 379 HOURS ON THE PARTS.

---
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.