COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Eurocopter AS 350 (Ecureuil) Series Helicopters AD/ECUREUIL/52 Amdt 1 In Door Sliding Windows 3/94 Applicability: Models B, BA, B1, B2, and D, equipped with the sliding windows listed in the requirement document. Requirement: Action in accordance with Eurocopter AS 350 SB 05.25R1. Note: DGAC AD 93-090-067(B) R1 refers. Compliance: 1. Inspect within 25 hours time in service after 3 March 1994, and thereafter at intervals not exceeding 25 hours time in service until modified. 2. Modify within 100 hours time in service after 3 March 1994, and thereafter inspect at intervals not exceeding 100 hours time in service until replaced by the post mod. windows listed in paragraph 1.C.3 of the requirement document. Note: Both the requirement document and the DGAC AD call the modification of the undamaged windows a Repair. The effective date of the initial issue of this Directive was 7 July 1993. Background: This Directive is raised to preclude the loss of a window during flight. Amendment 1 introduces a modification to existing windows in lieu of automatic window replacement.