EASA SIB NE-19-08
Lycoming Engines - Parallel Valve Cylinders and Head Assemblies
The FAA Special Airworthiness Information Bulletin NE-19-08 addresses cracking issues in certain Lycoming Engines equipped with Parallel Valve Cylinders and Head Assemblies shipped between September 1, 2013, and April 30, 2015. This bulletin applies to Lycoming engines excluding the 0-235 series and informs operators and maintenance personnel about the potential for cylinder cracking without mandating regulatory action. It highlights symptoms, inspection recommendations, and cautions against repairing affected cylinders.