COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-24 (Comanche) Series Aeroplanes AD/PA-24/3 Nose Wheel Steering Arm Mounting NK Bracket - Reinforcement Applicability: Model PA-24-250 with S/Nos. 24-105, -107, -109, -111, -113, -117, -119, -121, -123, -125, -128, -129, -131, -134, -139 to -141. Document: Piper SB No. 164 Para. VI. Compliance: Forthwith.