COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 180, 182 and Wren 460 Series Aeroplanes AD/CESSNA 180/41 Beryl Aviation Filtrator Assembly 4/75 Applicability: Models 182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 182K, 182L, 182M, 182N, 182P series which have been modified in accordance with FAA Supplemental Type Certificate No. SA 2653WE (installation of engine crankcase breather and vacuum pump air-oil separator). Requirement: Remove the Beryl Aviation filtrator assembly P/N B-1114-1 and install either P/N B- 1114-M or P/N B-1114-RM. Note: FAA AD No. 75-05-02 refers. Compliance: Within 100 hours time in service after 30 April 1975.