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. Rotax Piston Engines AD/ROTAX/23 Engine Driven Fuel Pump 5/2007 TX Applicability: BRP-Rotax GmbH & Co. KG, Bombardier-Rotax GmbH & Co. KG and Bombardier-Rotax GmbH Rotax 912 A, 912 F and 912 S engines fitted with fuel pump part no. 892230, 892232, 892540 (standard version) or part no. 892235, 892236, 892545 (version including flexible fuel line). Requirement: 1. Replace fuel pumps with Part Number (P/N) 892230, 892232 and 892540 by P/N 892542 or replace fuel pumps with P/N 892235, 892236 and 892545 by P/N 892546. 2. Do not install fuel pumps with P/N 892230, 892232, 892540, 892235, 892236 or 892545 onto any aircraft. Note: EASA Emergency AD 2007-0060-E dated 7 March 2007 refers. Compliance: 1. At the next maintenance event, or within the next 25 hours of engine operation, but not later than 1 July 2007, whichever occurs first after the effective date of this AD. 2. From the effective date of this AD. This Airworthiness Directive becomes effective on 16 March 2007. Background: It has been established that under certain circumstances (e.g. due to an electrical fuel pump problem) higher fuel pressures than expected can develop in the mechanical pump. This can result in engine malfunction and/or massive fuel leakage. The requirements of this AD are intended to remove certain fuel pumps from service. Charles Lenarcic Delegate of the Civil Aviation Safety Authority 13 March 2007