AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section. Boeing 747 Series Aeroplanes AD/B747/373 Evacuation System Shear-Pin Restraints 4/2008 Applicability: Boeing 747 series aircraft with Goodrich evacuation systems as listed in FAA AD 2008-03-05. Requirement: Action in accordance with the technical requirements of FAA AD 2008-03-05. Note: FAA AD 2008-03-05 refers. Compliance: Within 36 months after the effective date of this Airworthiness Directive. This Airworthiness Directive becomes effective on 10 April 2008. Background: This AD results from several reports of corroded shear-pin restraints that prevented Goodrich evacuation systems from deploying properly. David Villiers Delegate of the Civil Aviation Safety Authority 25 February 2008