COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-36 (Pawnee Brave) Series Aeroplanes AD/PA-36/21 Rudder Cable and Seat Belt Attachment Shackles - Inspection 12/81 Applicability: All models PA-36-285/300 and PA-36-375 with S/Nos. referenced in Piper SB No. 729 or with S/Nos. referenced in subsequent issues or revisions of that service bulletin. Document: Piper SB No. 729. Compliance: Within 25 hours time in service after 10 November 1981. Background: Some shackles P/N 486-566 (MS 20115-5) installed for rudder cable/horn attachment and the upper seat belt/cable attachment may have cracks.