COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Casa 212 Series Aeroplanes AD/CASA/7 Rudder Control System - Modification 1/84 Applicability: All model CASA-212 with S/Nos referenced in the requirement document. Document: Construcciones Aeronauticas SB 212-27-17R1. Compliance: Within 100 hours time in service after 31 January 1984 unless previously accomplished, or at the next scheduled inspection for maintenance release issue after 31 January 1984, whichever is the later. Background: Relocation of rudder control cables and replacement of pulley bracket at nose frame 7 will reduce cable wear and improve the Rudder Control System.