Document ID: chunk:federal_register_of_legislation:F2005L02414:body:0:p2
Version: federal_register_of_legislation:F2005L02414
Segment Type: other
Provision Reference: 
Character Range: 2857–4289

salt water is encountered infrequently i.e. less than weekly landings/takeoffs in salt water (i.e. less than 4 times a month) or mooring the aircraft in salt water for less than 60 days per year.
             This Amendment becomes effective on 29 September 2005.
Background:  Reports have been received by the Authority of severe corrosion damage affecting the wing fuselage carry through structures, which if undetected could lead to structural failure.

             This amendment allows the use of a procedure approved by the manufacturer, which uses a borescope to inspect the centre section for corrosion.  The new procedure does not require removal of the wings and hence minimises disturbance of the structure and thus greatly minimises the time taken to do the inspection.

             There is no change to the compliance time of a minimum inspection period of 3 years. However, in some cases, operators will now have up to 6 years between inspections depending on the type of environment the aircraft is predominantly operated in.  The requirements of the AD are changed to reflect the current manufacturer approved method of inspecting the wing centre section for corrosion using a borescope, instead of wing removal and a normal unaided visual inspection.

             The original issue of this AD became effective on 13 July 1989.

David Villiers
Delegate of the Civil Aviation Safety Authority

8 August 2005