COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 36 (Bonanza) Series Aeroplanes AD/BEECH 36/33 Amdt 1 Pilot and Co-pilot Seat Tracks and Seat Frames 11/89 Applicability: 1. Model A36 with S/Nos E-632 through E-789. 2. Model A36 with S/Nos E-790 through E-1945 E-1947 through E-2103 E-2105 through E-2110. 3. Model A36TC, B36TC with S/Nos EA-2 through EA-319. EA-321 through EA-388. Requirement: For Para 1. Action in accordance with Beechcraft Mandatory SB 2010 Rev 1 Part I. For Para 2 & 3. Action in accordance with Beechcraft Mandatory SB 2010 Rev 1 Part I and Part II. Note 1: FAA AD 88-21-02 refers. Note 2: Compliance with Beechcraft SB 2233 is an acceptable alternative to modification per SB 2010 Part I. Compliance: At the next scheduled inspection for Maintenance Release issue after 29 December 1988. Background: To prevent failure of the pilot and copilot seat attachment during an emergency landing. Amendment 1 clarifies Applicability and Requirement.