Document ID: chunk:federal_register_of_legislation:F2009L00677:body:0:p3
Version: federal_register_of_legislation:F2009L00677
Segment Type: other
Provision Reference: 
Character Range: 5603–7425

on the tail boom by increasing the diameter of the bolt holes, and replace bolts part number 22126BV060032L and washers part number 23112AG060LE with special bolts part number 350A23-4016-20 and special washers part number 350A23-4017-22; in accordance with ASB No. 55.00.16 Revision 1, (MOD 073330), or later EASA approved revision.

                Compliance with Requirement 3 of this Directive is considered as acceptable compliance with Requirements 2.a.(i) and 2.a.(ii), and terminating action for the repetitive checks of Requirements 2.a.(iii), 2.b.(i) and 2.b.(ii) of this Directive.

                4. After 31 March 2009, upper and lower fins with part numbers listed in the applicability section of this Directive, and held as spares, shall not be installed on any helicopter unless MOD 073330 has been incorporated.

             Note:  EASA AD 2009-0030 refers.
Compliance:  As specified in Requirements 1, 2, 3 and 4.
             This Amendment becomes effective on 26 February 2009.
Background:  The EASA received several reports of cracking in the stabiliser upper fin of Model AS 355 N helicopters.  The growth of a crack in a fin attachment spar, unless detected and corrected, could lead to failure of the spar and loss of the fin.

             The EASA AD related to this Directive, AD 2008-0121, supersedes EASA ADs 2006-0060-E (AD/ECUREUIL/118) and 2006-0095 (AD/ECUREUIL/107 Amdt 1), and thereby constitutes terminating action to the requirements of these CASA ADs.

   Amendment 1 is issued in response to a new EASA AD, which adds new upper and lower fin assembly part numbers to applicability and includes repetitive checks for some AS 350 B3 helicopters until accomplishment of MOD 073330.

David Villiers
Delegate of the Civil Aviation Safety Authority

18 February 2009