COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fokker F28 Series Aeroplanes AD/F28/66 Amdt 4 Corrosion Prevention and Control Program 12/95 Applicability: Model F28; except MK 0100 series. Requirement: Action in accordance with the technical requirements of RLD AD 91-051/4(A). Notwithstanding CAR 51B, corrosion classified as level 1 need not be reported. Level 2 corrosion may be consolidated with a sixty day report of corrective action, and submitted to the Authority District (Airport) Office under cover of a single MDR. Level 3 corrosion shall be reported by individual MDR. Note 1: Fokker Document No. SE-253 Rev.4 refers. Compliance: As specified in the requirement document. The compliance of the previous issue of this Directive is as stated in this issue. This Amendment is effective from 9 November 1995. Background: The Country of Origin Airworthiness Authority requires implementation of a corrosion prevention and control program to prevent the degradation of the structural capabilities of the affected aircraft. Amendment 1 was raised in response to a revision of the Fokker corrosion control program document. Amendment 2 was raised to introduce a note which specifies the reporting requirements when corrosion is found as a result of the CPCP. Amendment 3 was issued in response to revision 3 of the Fokker corrosion control programme document. Amendment 4 is issued to reflect latest RLD AD and Fokker corrosion control programme document and to make minor textural amendments.