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/ARRIEL/23 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. Turbomeca Turbine Engines - Arriel Series AD/ARRIEL/23 Amdt 1 Start Electro Valve - Fuel Leaks 7/2006 DM Applicability: TURBOMECA Arriel 1 Series Turbo shaft engines. Requirement: Inspect for looseness on the tee coupling on the start electro valve and ensure correct and proper assembly in accordance with Turbomeca alert service bulletin (ASB) number A292 73 0251 revision 2 dated 05 February 2001 or later approved revisions. Note: EASA Airworthiness Directive (AD) No 2006-0068 dated 24 March 2006 refers. Compliance: With in one month, after the effective date of this AD, unless accomplished earlier. This Amendment becomes effective on 8 June 2006. Background: During engine operations, fuel leaks at the level of start electro valve fuel coupling were observed. These fuel leaks may result in fire or a lack of power or an uncommanded in-flight shutdown. The current amendment corrects typographical error noted in the original issue of this Airworthiness Directive. The technical contents remain unchanged. The original issue of this AD became effective on 8 June 2006. James Coyne Delegate of the Civil Aviation Safety Authority 4 May 2006