AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B747/241 and issues the following 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/B747/241 Amdt 1 Flight Deck Dripshield Fire 11/2005 Blocking Installation Applicability: Model 747 aircraft, line numbers 1 through 299 and 951 through 1234; except line numbers 292, 296, 297, 1174 and 1216. Requirement: Action in accordance with the technical requirements of FAA AD 2005-17-09 Amdt 39-14230. Compliance: Before 22 March 2007. The compliance calendar time specified by FAA AD 2000-26-04 (original issue of this Directive) remains unchanged with the issue of superseding FAA AD 2005-17-09. This Amendment becomes effective on 27 October 2005. Background: Investigations by the FAA indicated widespread use in drip shields of adhesive/material combinations that are easily ignited and able to propagate a small fire. Amendment 1 is issued in response to a new FAA AD, which removes certain aircraft from applicability. David Villiers Delegate of the Civil Aviation Safety Authority 15 September 2005