Document ID: chunk:federal_register_of_legislation:F2011L00849:body:0:p2
Version: federal_register_of_legislation:F2011L00849
Segment Type: other
Provision Reference: 
Character Range: 2832–3911

Such cracking, unless detected and corrected, could result in significant degradation of the fuselage structure and reduce its ability to carry flight loads from the vertical stabiliser, which could adversely affect the controllability of the aircraft.

             This amendment is to allow the use of Revision 1 of Boeing Service Bulletin
             747-53A2651 as an Alternative Method of Compliance (AMOC) and to allow FAA form 8100-9 approved repairs, without the need for a CASA Exclusion.  There is some change to the requirements and compliance and these are specified in Paragraph 1E of Boeing Service Bulletin 747-53A2651, Rev 1, dated 2 September 2010.

             Amendment 2 is to correct some wording in Requirement 1.  There is no change to the intent of the requirements or compliance.

             Amendment 1 of this Airworthiness Directive became effective on 20 May 2011.

             The original issue of this Airworthiness Directive became effective on 2 July 2009.

Mike Higgins
Delegate of the Civil Aviation Safety Authority

20 May 2011