COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fokker F28 Series Aeroplanes AD/F28/8 Aileron Control Unit - Inspection and Modification NK Applicability: All models S/Nos. 11003 to 11029 and 11991 to 11994. Document: Fokker SB F28/27-32. Compliance: For Part 1 - Within 50 hours time in Service after 30 Nov. 1970. For Part 2 - Before 1 February 1971.