EASA Regulations for Piper PA-31T

FAA SAIB NE-06-13 - Turboprop Aeroplanes using Propellers with four (4) or more Blades

FAA SAIB NE-06-13 - Turboprop Aeroplanes using Propellers with four (4) or more Blades is a Special Airworthiness Information Bulletin issued by the FAA on December 12, 2005, and endorsed by EASA in Safety Information Notice 2007-06. It addresses turboprop aircraft equipped with propellers having four or more blades, including models such as Pilatus PC-6, PC-7, PC-12, Piper PA-31T series, Beechcraft King Air series, and others. The bulletin alerts operators to check and adhere to propeller idle RPM settings and any RPM restrictions to avoid potential safety risks related to vibratory resonance and propeller fatigue damage.