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-2/18 Seat Safety Bracket - Installation 9/61 Applicability: Model B-2 prior to S/Nos. 104. Document: 1. Brantly SB No. 13; or 2. FAA AD 61-16-3. Compliance: Forthwith.