AD/DAUPHIN/4 Amdt 5 - Fin to Tailboom Attachments (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/4 Amdt 4 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/4 Amdt 5 Fin to Tailboom Attachments 6/2005

Applicability: Models SA 360C, 361, 365C, C1, and C2 helicopters; pre. Mod. 07-2457 or SB 53.09 installation. Requirement: 1. Unless coated with a clear lacquer, strip the paint from the external surface of the 'fairing' plate joining the upper tailboom to the lower fin leading edge; and perform a detailed visual inspection of the 'fairing' plate for cracks at the rivet lines and bend radius.

Note: DGAC AD 80-238-9(B) and Aerospatiale Dauphin Service Bulletin No. 05.04 refer.

2. Perform a detailed external and internal visual inspection for cracks in the fin to tailboom attachment structure. Pay particular attention to the crown attachment finger doubler, the tailboom end rib, the ends of the tailboom stringers and the inclined fenestron rib P/N 360A23.1061.01.

3. Perform an X-ray inspection of the fin to tailboom attachment structure in accordance with NDT Procedure RAD/DAUPHIN/4 or other scheme approved by the Authority, to check for cracks in the crown attachment finger doubler. Compliance: 1. Inspect in accordance with Requirement 1: