COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 19, 23 and 24 Series Aeroplanes AD/BEECH 23/24 Acrobatic Manoeuvres - Placard 8/74 Applicability: Model B-19 with S/Nos.MB-481 to MB-634and MB-649 and Model C-23 with S/Nos. M-1285 to M-1493 except M-1437 and M-1491 - not fitted with spin improvement Kit No. 23-4007-1S. Requirement: Remove all placards pertaining to intentional spins and acrobatic flight and replace with a placard, conspicuously located on the instrument panel, as follows : "THIS AEROPLANE MUST BE OPERATED AS A NORMAL OR UTILITY CATEGORY AEROPLANE ONLY. INTENTIONAL SPINS ARE PROHIBITED. NO ACROBATIC MANOEUVRES APPROVED EXCEPT CHANDELLES, LAZY EIGHTS, STEEP TURNS AND STALLS (EXCEPT WHIP STALLS)." Compliance: Before issue of a Certificate of Airworthiness.