Document ID: chunk:federal_register_of_legislation:F2008L01639:body:0:p2
Version: federal_register_of_legislation:F2008L01639
Segment Type: other
Provision Reference: 
Character Range: 2753–4090

continued to be maintained to an approved Alpha Aviation Design Ltd maintenance programme.

             Note:  NZ CAA AD DCA/R2000/37B and EASA AD 2005-0028, refer.
Compliance:  Within 60 months after aircraft date of manufacture and within 6 months for aircraft which are older than 60 months, unless accomplished within the last 24 months, and thereafter at intervals not to exceed 24 months.
             This Amendment becomes effective on 5 June 2008.
Background:  Several occurrences have shown that the Robin series of aircraft are highly susceptible to corrosion of wing spar web and boom angles.

             Corrosion of the wing spars may not be detected by normal maintenance practices on these aircraft due to access for inspection being difficult.  Corrosion may therefore develop unchecked, leading to an unsafe condition and ultimately a catastrophic failure of the wing.

             Amendment 1 was issued in response to a new EASA AD, which was issued because the existing state of design AD did not address all affected types of a similar design.

             Amendment 2 is issued to align this Directive with NZ CAA AD DCA/R2000/24A for all models except the Model HR 100, which is aligned with EASA AD
             2005-0028.

David Villiers
Delegate of the Civil Aviation Safety Authority

16 April 2008