COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Short SD3-30 Series Aeroplanes AD/SD3-30/35 Emergency Brake Accumulator Mounting Structure 2/99 Applicability: All SD3-30 aircraft. Requirement: Action in accordance with Shorts Mandatory Service Bulletin SD330-29-19. Note: UK CAA AD 008-10-98 refers. Compliance: Unless already accomplished, before 25 May 1999. This Airworthiness Directive becomes effective on 25 February 1999. Background: The manufacturer received reports of cracking of the emergency brake accumulator mounting structure. This Directive requires an inspection for cracks, and if required, the replacement of the mounting angle.