Document ID: chunk:federal_register_of_legislation:F2006B06713:body:0
Version: federal_register_of_legislation:F2006B06713
Segment Type: other
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Sikorsky S-76 Series Helicopters

 AD/S-76/30
 Amdt 1

 Applicability: Model S76A.

     Tail Rotor Blade Elliptical Centering Plug and Retaining Pad

 12/94

 Requirement: Action in accordance with Sikorsky SB 76-65-35 Rev A.

            Note: FAA AD 94-14-20 refers. This supersedes FAA AD 84-06-02.

 Compliance: Unless already accomplished, within 25 hours time in service after 13 October 1994.
            The effective date of the initial issue was 27 February 1984.

            Background: An operator encountered severe vibration during flight while executing a left turn after take-off. Investigation revealed disbonding of the aluminium elliptical spar plug which allowed the tail rotor blade to be displaced in a radial direction. Amendment 1 withdraws the repetitive inspection requirement as a result of no further reports of failure following the inspection and modification in accordance with the Service Bulletin.