AD/DAUPHIN/46 Amdt 2 - Main Rotor Gearbox Suspension Diagonal Cross-Member (Cth)

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/DAUPHIN/46 Amdt 1 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.

Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters AD/DAUPHIN/46 Amdt 2 Main Rotor Gearbox Suspension 7/2007 Diagonal Cross-Member

Applicability: Model AS 365 N, N1, and N2 helicopters equipped with main rotor gearbox suspension diagonal cross-members, part number 365A38-3023-20, -21, -22, -23, and -24. Requirement: Action in accordance with paragraph 2.B of Eurocopter AS 365 N Alert Service Bulletin No. 05.00.37 Revision 2, or later EASA approved revision.

If a crack is detected, before further flight, remove and replace the diagonal brace cross-member in accordance with paragraph 2.B.3.a of the Requirement document.

If the complete failure of the diagonal cross-member is detected, before further flight, remove and replace the diagonal cross-member and perform the checks in accordance with paragraph 2.B.3.b of the Requirement document.

Note: EASA AD 2007-0129 refers. Compliance: 1. Perform an initial check of the centre portion of the main rotor gearbox diagonal cross-member as specified in the Requirement document, unless already accomplished: