Document ID: chunk:federal_register_of_legislation:F2009L00676:body:0:p3
Version: federal_register_of_legislation:F2009L00676
Segment Type: other
Provision Reference: 
Character Range: 5662–6995

of Requirements 1.c, 2.a. and 2.b 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 2009-0029 refers.
Compliance:     As specified in Requirement 1, Requirement 2, Requirement 3 and Requirement 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 2008-0120, supersedes EASA ADs 2006-0096 (AD/AS 355/84 Amdt 1) and 2006-0097R1 (AD/AS 355/91 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 the repetitive checks of previous Directives; until accomplishment of MOD 073330.

David Villiers
Delegate of the Civil Aviation Safety Authority

18 February 2009