COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-24 (Comanche) Series Aeroplanes AD/PA-24/35 Beryl Aviation Filtrator Assembly - Replacement 4/75 Applicability: Models PA24, PA24-250, PA24-260 series which have been modified in accordance with FAA Supplemental Type Certificate No. SA2653WE (installation of engine crankcase breather and vacuum pump air-oil separator). Requirement: 1. Remove the Beryl Aviation filtrator assembly P/N B-1113-1 and install either P/N B-1113-M or P/N B-1113-RM; or 2. FAA AD No. 75-05-02. Compliance: Within 100 hours time in service after 30 April 1975.