COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Airbus Industrie A319, A320 and A321 Series Aeroplanes AD/A320/59 Amdt 1 Central Fuselage, Frame and Frame Feet at Frames FR37 Through FR41 3/99 Applicability: All Model A319, A320, and A321 aircraft without Airbus Industrie (Airbus) modifications 25896 or 25592 or 25593 installed in production, or Airbus Service Bulletin A320-53-1128. Requirement: Inspect in accordance with Airbus Service Bulletin A320-53-1141. Note: DGAC AD 98-509-123(B) refers. Compliance: In accordance with the thresholds and instructions, and repeat inspection requirements defined in the Requirement Document; until accomplishment of Airbus Service Bulletin A320-53-1128. This Amendment becomes effective on 25 March 1999. Background: Cracks were found around fastener holes between frames FR37 and FR41 during an inspection program of fastener holes of left hand and right hand side frame feet, in accordance with Airbus Service Bulletin A320-53-1025. The original issue of this Airworthiness Directive became effective on 17 August 1995.