COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES FLS Aerospace OA7 Optica Series Aeroplanes AD/OPTICA/2 Engine Pod Mounting Feet 7/94 Applicability: Model OA7 Optica aircraft. Requirement: Action in accordance with FLS Aerospace Service Bulletin OA7/SB/0040. Note: UK CAA AD 010-03-94 refers. Compliance: At the next 50 hour inspection after 23 June 1994, and thereafter at every subsequent 50 hour inspection. Background: The UK CAA requires a periodic inspection of the engine pod mounting feet, and replacement of any mounting foot found to contain a crack.