The Federal Aviation Administration (FAA) is amending the airworthiness standards for airplane propellers. This action would require a safety analysis to identify a propeller critical part. Manufacturers would identify propeller critical parts, and establish engineering, manufacturing, and maintenance processes for propeller critical parts. These new requirements provide an added margin of safety for the continued airworthiness of propeller critical parts by requiring a system of processes to identify and manage these parts throughout their service life. This rule would eliminate regulatory differences between part 35 and European Aviation Safety Agency (EASA) propeller critical parts requirements, thereby simplifying airworthiness approvals for exports.