# SDR CA140204003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2014
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Robsin R44RAVENII
- Aircraft time: 4,491 hours
- Engine: Lyc IO540AE1A5
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve
- Part number: 17A23937
- Condition: Damaged
- Location: Intake
- 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/CA140204003

## Discrepancy

(CAN) DURING 100 HR INSPECTION, VALVE COVERS WERE REMOVED FOR INSPECTION.  SCORING OF INTAKE VALVE STEM WAS NOTED ON CYLINDERS 1, 3 & 5.  ENGINE REMOVED FOR REPAIR.

---
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.