Document ID: chunk:federal_register_of_legislation:F2006B08691:body:0:p1
Version: federal_register_of_legislation:F2006B08691
Segment Type: other
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Character Range: 4–3028

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
    SCHEDULE OF AIRWORTHINESS DIRECTIVES

    General Electric Turbine Engines - CT7 Series

    AD/CT7/7
    Amdt 1

    Stage 1 and Stage 2 Gas Generator Turbine Disks 7/98

               Applicability: General Electric CT7-5, -7, and -9 series engines incorporating Gas Generator Turbine (GGT) disks, P/No. 6064T06P01(Stage 1) or 6064T12P01(Stage 2).

               Requirement: Perform a one time eddy current inspection of affected GGT disks in accordance with General Electric Service Bulletin (CT7-TP series) A72-393 Revision 1 dated 13 February 1997.

               Note 1: Disks inspected per the original issue of this Directive satisfy the intent of this amendment to the Directive.

               Note 2: FAA AD 97-25-07 also refers.

               Note 3: FAA AD 97-25-07 supersedes FAA AD 97-05-12.

    Compliance: Unless previously accomplished:

                  (a)      For Stage 1 GGT disks identified in Table 1 of General Electric Service Bulletin (CT7-TP series) A72-393 Revision 1 that have accumulated 8,500 or more Cycles Since New (CSN) on the effective date of this Directive, inspect at the next GGT module removal or within 3 months of the effective date of this Directive whichever occurs first.

                  (b)     For Stage 1 GGT disks identified in Table 1 of General Electric Service Bulletin (CT7-TP series) A72-393 Revision 1 that have accumulated less than 8,500 CSN, inspect at the next GGT module removal but not to exceed 9,000 CSN.

                  (c)      For Stage 1 GGT disks identified in Table 2 of General Electric Service Bulletin (CT7-TP series) A72-393 Revision 1 that have accumulated 11,500 or more CSN on the effective date of this Directive, inspect at the next GGT module removal or within 3 months of the effective date of this Directive whichever occurs first.

                  (d)     For Stage 1 GGT disks identified in Table 2 of General Electric Service Bulletin (CT7-TP series) A72-393 Revision 1 that have accumulated less than 11,500 CSN, inspect at the next GGT module removal but not to exceed 12,000 CSN.

                  (e)      For Stage 2 GGT disks identified in Table 3 of General Electric Service Bulletin (CT7-TP series) A72-393 Revision 1 that have accumulated 8,500 or more (CSN) on the effective date of this Directive, inspect at the next GGT module removal or within 3 months of the effective date of this Directive whichever occurs first.
 COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

(f)      For Stage 2 GGT disks identified in Table 3 of General Electric Service Bulletin (CT7-TP series) A72-393 Revision 1 that have accumulated less than 8,500 CSN, inspect at the next GGT module removal but not to exceed 9,000 CSN.

(g)     For Stage 2 GGT disks identified in Table 4 of General Electric Service Bulletin