SAIB: CE-18-32 - Engine Oil System (Airframe Furnished); Flapper Check Valve Failure

This Special Airworthiness Information Bulletin is to alert owners, operators, and maintenance technicians of Textron Aviation Inc. (Textron) Model 208B airplanes of failure of the oil system “Valve – Flap Check” on serial numbers 208B2197 and 208B5000 and on. These airplanes are commonly referred to as “208B EX” or “EX” and incorporate the Textron PT6A-140 engine installation.