Document ID: chunk:federal_register_of_legislation:F2006B08479:body:0
Version: federal_register_of_legislation:F2006B08479
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 General Electric Turbine Engines - CF6 Series

                   AD/CF6/37  High Pressure Compressor Rotor (HPCR) Stages 3-9 - Replacement

2/98 TX

            Applicability:  CF6-50 and -80C2 Series turbofan engines identified by serial number in GE Alert Service Bulletins, GE CF6-50 SB 72-A1139 and CF6-80C2 SB 72-A906, dated 17 October 1997.

            Requirement: Remove from service HPCR 3-9 spools identified by serial number in the appropriate service bulletin and replace with serviceable parts as follows:

(1)     For GE CF6-50 series turbofan engines, remove and replace in accordance with GE CF6-50 SB 72-A1139, dated 17 October 1997.

(2)     For GE CF6-80C2 series turbofan engines, remove and replace in accordance with GE CF6-80C2 SB A906, dated 17 October 1997.

            Note: US FAA AD 97-22-14, amendment 39-10186, dated 17 November 1997 applies.

 Compliance: Within 30 days of the effective date of this directive.

            This airworthiness directive becomes effective on 20 November 1997.

            Background: Separation of the high pressure compressor rotor (HPCR), stages 3-9 spool has been experienced recently and traced to a manufacturing fault.              The spools affected have been identified by serial number and are now being withdrawn from service and replaced at the manufacturer's expense (including manpower costs).