AD/A320/64 - Avionics Hatch 231 AF.
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/A320/64 Avionics Hatch 231 AF. 4/96 Applicability: All models without modifications 22119 or 21999 embodied, or SB A320-53-1070 incorporated. Requirement: Action in accordance with Airbus Industrie SB A320-53- 1070. Note: DGAC AD 96-011-075(B) refers. Compliance: Prior to 30 September 1997. Background: This Directive is issued to prevent spilled liquids entering the avionics compartment via the hatch seal.
Official source: https://www.legislation.gov.au/Details/F2006B01952