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-2/19 Transmission Mount Lugs - Reinforcement 9/61 Applicability: Model B-2 prior to S/No. 103 fitted with 0.250" thick transmission mounting lugs. Document: 1. Brantly SB No. 14; or 2. FAA AD 61-16-4. Compliance: Forthwith.