Document ID: chunk:federal_register_of_legislation:F2006B09597:body:0
Version: federal_register_of_legislation:F2006B09597
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Enstrom F-28 Series Helicopters

 AD/ENST 28/7
 Amdt 1

 Applicability: All models.

  Main Rotor Transmission Attachment Bolts - Inspection and Replacement

 4/77

             Requirement: 1. Inspect the 4 bolts attaching the main rotor transmission assembly to the fuselage frame for a torque preloading of 100-110 inch pounds.

             2. Modify the attachment of the main rotor transmission assembly to fuselage attachment as per Enstrom Service Information Letter No. 0057.

            Compliance: For Para. 1: At intervals not exceeding 50 hours time in service until modified and then once only within 100 hours time in service after modification as per SIL No. 0057.

            For Para. 2: Modify within 300 hours time in service after 1 June 1977.