COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 150, F150, 152 & F152 Series Aeroplanes AD/CESSNA 150/26 Wing Flap Actuator Ball Nut Assemblies 3/77 Applicability: Models 150 and A150 with S/Nos. as detailed in Cessna SL SE76-25. Requirement: 1. Inspect P/N C301002-0101 wing flap actuator for date stamp code as detailed in Cessna SL SE 76-25. 2. If the date stamp code on the actuator is OH, HH, WH or ZH, install a placard near the flap control which reads: "FLAP EXTENSION PROHIBITED". Note: This placard may be removed when the paragraph 3 requirement is satisfied. 3. Replace affected wing flap actuator ball nut assemblies in accordance with Cessna SL SE 76-25. Compliance: For Paragraphs 1 and 2 - Before further flight after 28 January 1977. For Paragraph 3 - Within 100 hours time in service after 28 January 1977.