COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Brantly B-2 Series Helicopters AD/B-2/16 Centrifugal Clutch - Inspection Cockpit Placard - Installation 7/61 Applicability: All model B-2. Document: 1. Brantly SB No. 6; or 2. FAA AD 61-4-1. Compliance: Forthwith.