COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 18 Series Aeroplanes AD/BEECH 18/18 Amdt 1 Applicability: All models. Control Columns and Elevator Control Arm Assembly - Inspection 12/87 Requirement: Inspect the Control Columns and Elevator Control Arm Assembly as detailed in Beechcraft SI 0889-155. In addition inspect for cracks on the Control Column Assembly P/N 187510, tubing, outer surface for a distance of 11 cm up the tube above the lower welded tube splice. The same area on the co-pilot's Control Column is also to be inspected. The inspection is to be performed using visual and either magnetic particle, or penetrant procedures; or FAA AD 77-19-07. Compliance: Within 100 hours after 31 December 1977 and thereafter at 300 hour intervals. Federal Register of Legislative Instruments F2006B03616