COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes AD/SWSA226/42 Amdt 1 Prohibition of Flight into Known Icing Conditions - Placard 12/82 Applicability: Models SA227-AC, SA227-AT, SA227-TT, not modified in accordance with SA227 Service Bulletin A61-002 or Service Bulletin 30-001. Requirement: Install a placard, minimum 1/4" lettering on the instrument panel in plain view of the pilot stating "Flight into known icing conditions prohibited". Compliance: Forthwith. Background: Overseas operational experience indicates that propeller de-icing is not adequate. FAA Directive 82-05-05 withdraws approval for operation in icing conditions.