COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fokker F28 Series Aeroplanes AD/F28/62 Aileron Dual Input Quadrant Bracket 13/90 Applicability: F28 aircraft with S/Nos 11003 through 11241, 11991 and 11992. Requirement: Action in accordance with Fokker SB F28/27-177. Note: AD BLA 90-097 refers. Compliance: Prior to 30 April 1991, unless previously accomplished. Background: Country of origin AD. Severe pitting corrosion on the mounting brackets has been reported, together with incorrect installation of bushings.