80-08-06 R1: Turbine Disks

80-08-06 R1 GENERAL ELECTRIC COMPANY: Amendment 39-3740 as amended by Amendment 39- 4005. Applies to CJ610-8A and -9 turbojet and CF700-2D and -2D-2 turbofan engines with turbine disks identified by serial numbers below. To prevent low cycle fatigue failure of turbine disks suspected to have foreign material segregation, accomplish the following within the next 50 cycles. Remove from service first stage turbine disks, P/N 5011T75P01, and second stage turbine disks P/N 5011T76P01, with serial numbers listed below and replace with serviceable disks: SERIAL NUMBERS: FIRST STAGE: GATWZA 00585 GATWZA 00637 GATWZA 00677 GATWZA 00587 GATWZA 00640 GATWZA 00679 GATWZA 00599 GATWZA 00641 GATWZA 00680 GATWZA 00601 GATWZA 00642 GATWZA 00681 GATWZA 00604 GATWZA 00644 GATWZA 00682 GATWZA 00607 GATWZA 00645 GATWZA 00683 GATWZA 00610 GATWZA 00646 GATWZA 00687 GATWZA 00611 GATWZA 00647 GATWZA 00690 GATWZA 00613 GATWZA 00649 GATWZA 00691 GATWZA 00615 GATWZA 00652 GATWZA 00692 GATWZA 00616 GATWZA 00658 GATWZA 00693 GATWZA 00617 GATWZA 00662 GATWZA 00704 GATWZA 00618 GATWZA 00663 GATWZA 00705 GATWZA 00624 GATWZA 00664 GATWZA 00706 GATWZA 00626 GATWZA 00665 GATWZA 00707 GATWZA 00627 GATWZA 00667 GATWZA 00708 GATWZA 00630 GATWZA 00671 GATWZA 00709 GATWZA 00632 GATWZA 00672 GATWZA 00710 GATWZA 00633 GATWZA 00673 GATWZA 00713 GATWZA 00634 GATWZA 00674 GATWZA 00714 GATWZA 00635 GATWZA 00676 GATWZA 00715 FIRST STAGE: OJAWZA 11J774-22 OJAWZA 11J796-20 OJAWZA 11J796-01 OJAWZA 11J796-21 OJAWZA 11J796-03 OJAWZA 11J796-23 OJAWZA 11J796-04 OJAWZA 11J796-24 OJAWZA 11J796-05 OJAWZA 11J796-31 OJAWZA 11J796-06 OJAWZA 11J796-32 OJAWZA 11J796-07 OJAWZA 11J796-35 OJAWZA 11J796-08 OJAWZA 11J796-41 OJAWZA 11J796-09 OJAWZA 11J796-42 OJAWZA 11J796-11 OJAWZA 11J796-43 OJAWZA 11J796-13 OJAWZA 11J796-44 OJAWZA 11J796-15 OJAWZA 11J796-45 OJAWZA 11J796-16 SECOND STAGE: GATWZA 00541 GATWZA 00583 GATWZA 00614 GATWZA 00542 GATWZA 00585 GATWZA 00616 GATWZA 00545 GATWZA 00587 GATWZA 00617 GATWZA 00547 GATWZA 00588 GATWZA 00618 GATWZA 00548 GATWZA 00589 GATWZA 00619 GATWZA 00549 GATWZA 00590 GATWZA 00621 GATWZA 00550 GATWZA 00592 GATWZA 00622 GATWZA 00551 GATWZA 00593 GATWZA 00623 GATWZA 00552 GATWZA 00594 GATWZA 00624 GATWZA 00553 GATWZA 00595 GATWZA 00630 GATWZA 00554 GATWZA 00596 GATWZA 00632 GATWZA 00557 GATWZA 00597 GATWZA 00634 GATWZA 00563 GATWZA 00598 GATWZA 00636 GATWZA 00564 GATWZA 00600 GATWZA 00637 GATWZA 00565 GATWZA 00601 GATWZA 00638 GATWZA 00566 GATWZA 00602 GATWZA 00640 GATWZA 00567 GATWZA 00604 GATWZA 00642 GATWZA 00570 GATWZA 00605 GATWZA 00643 GATWZA 00571 GATWZA 00607 GATWZA 00646 GATWZA 00574 GATWZA 00609 GATWZA 00648 GATWZA00575 GATWZA 00610 GATWZA 00649 GATWZA 00577 GATWZA 00611 GATWZA 00651 GATWZA 00580 GATWZA 00612 GATWZA 00581 GATWZA 00613 SECOND STAGE: OJAWZA 11J781-01 OJAWZA 11J781-19 OJAWZA 11J781-02 OJAWZA 11J781-20 OJAWZA 11J781-03 OJAWZA 11J781-21 OJAWZA 11J781-04 OJAWZA 11J781-22 OJAWZA 11J781-05 OJAWZA 11J781-23 OJAWZA 11J781-06 OJAWZA 11J781-24 OJAWZA 11J781-07 OJAWZA 11J781-25 OJAWZA 11J781-08 OJAWZA 11J781-26 OJAWZA 11J781-09 OJAWZA 11J781-27 OJAWZA 11J781-10 OJAWZA 11J781-28 OJAWZA 11J781-11 OJAWZA 11J781-29 OJAWZA 11J781-12 OJAWZA 11J781-31 OJAWZA 11J781-13 OJAWZA 11J781-32 OJAWZA 11J781-14 OJAWZA 11J781-33 OJAWZA 11J781-15 OJAWZA 11J781-34 OJAWZA 11J781-16 OJAWZA 11J781-35 OJAWZA 11J781-17 OJAWZA 11J781-37 OJAWZA 11J781-18 OJAWZA 11J781-38 General Electric Company Alert Service Bulletin Nos. (CJ610) A72-135, Addendum 1, dated May 19, 1980, and (CF700) A72-142, Addendum 1, dated May 19, 1980, refer to this subject. This amendment was effective upon receipt of the Emergency Airworthiness Directive dated May 30, 1980, and is effective to all others on February 2, 1981.