COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Short SD3-60 Series Aeroplanes AD/SD3-60/10 Elevator and Rudder Control Guards - Modification Applicability: All model SD 3-60 with S/Nos SH 3601 to SH 3665. Requirement: Shorts S.B. SD 360-27-04. Compliance: Prior to 31 August 1985. 6/85 DM Background: An instance was reported to the manufacturer in which an ashtray was dropped behind a furnishing panel in the passenger compartment adjacent to the spring pot in the elevator control circuit. Fitting of extended/additional guards will protect the controls from possible interference.