COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Propellers - Variable Pitch - Allison/Aeroproducts AD/PAP/6 Amdt 2 Installation Of Increase Pitch Metering Restrictor 11/67 Applicability: All model A6441 FN-606 and A6441 FN-606A fitted with assemblies specified in Allison Commercial Propeller Bulletin No. 63-310. Document: Allison SPB No. 63-310. Compliance: Before 1 November 1967.