COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Pilatus Britten-Norman BN-2 Series Aeroplanes AD/BN-2/68 Rudder Lower Hinge Doubler 6/99 Applicability: Model BN2, BN2A, BN2B, and BN2T Islander aircraft. Requirement: Action in accordance with Britten Norman Mandatory Service Bulletin BN2/SB.240. Compliance: Before 17 July 1999. This Airworthiness Directive becomes effective on 17 June 1999. Background: The manufacturer received reports of damage to the rudder lower hinge. This Directive requires installation of a doubler at the left and right side of the rudder lower hinge bracket.