COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 35 (Bonanza) Series Aeroplanes AD/BEECH 35/61 Pilot and Copilot Seat Frame Assemblies 13/88 Applicability: Model V35B with S/Nos D-9830 through D-10403. Requirement: Action in accordance with Beechcraft Mandatory SB 2010 Rev 1 Part II. Note: FAA AD 88-21-02 refers. 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.