What was found
(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.
- 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
- Part
- Valve
- Part number
- 17A23937
- Condition
- Damaged
- Location
- Intake
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.