COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Short SD3-30 Series Aeroplanes AD/SD3-30/34 Autofeather System Wiring 1/99 Applicability: All SD3-30 aircraft that have incorporated Shorts Service Bulletin (SB) SD330-30-30 Original Issue dated June 1988. Requirement: 1. Rewire the aeroplane in accordance with Shorts SB SD330-30-30 Revision 1 dated September 1997. Note: CAA(UK) AD 003-06-98 and Shorts Mandatory Service Bulletin SD330-30-33 dated June 1998 refers. Compliance: 1. Before 31 March 1999. This Airworthiness Directive becomes effective on 28 January 1999. Background: Incorporation of Shorts SB SD330-30-30 Original Issue resulted in wiring changes that inhibited the operation of the autofeather system. Rewiring in accordance with Revision 1 of the service bulletin restores autofeather system operation.