Document ID: chunk:federal_register_of_legislation:F2006B04693:body:0
Version: federal_register_of_legislation:F2006B04693
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Bell Helicopter Textron 47 (All Variants) Series Helicopters

 AD/BELL 47/65 Duplex Pitch Change Bearing - Inspection
                              and Retirement

 8/70

            Applicability: All model 47D-1, 47G, 47G-2 and 47H-1 fitted with duplex pitch change bearing P/N 47-641-131-1.

             Requirement: 1. Inspection: Dismantle the tail rotor drive head sufficiently to expose the duplex pitch change bearings and guide sleeve P/N 47-641-040 or 47-641-130.

1.1.       Inspect the outside surface of the guide sleeve for scoring.

1.2.       Inspect the duplex bearing for roughness.

            2. Retirement: Replace duplex pitch change bearings P/N 47-641-131-1.

            Note: FAA AD 70-14-1 also refers.

            Compliance: For Para. 1 - Within 100 hours time in service after 31 August 1970. For Para. 2 - At intervals not exceeding 600 hours total time in service.