COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES SAAB SF340 Series Aeroplanes AD/SF340/27 Lavatory Circuit Breaker Replacement 7/91 Applicability: As specified in the Requirement Document. Requirement: Action in accordance with the technical requirements Swedish AD 1-045. Note: SAAB-SCANIA SB 340-25-181 also refers. Compliance: Prior to 8 December 1991. Background: Action in accordance with this AD is necessary in order to prevent possible wire overload if a failure occurs in the forward or aft lavatory electrical system. Note: The compliance date specified in the Requirement document has been extended from 8 September 1991 to 8 December 1991.