2005-26-09: 1st stage fan blades.

2005-26-09 Pratt & Whitney: Amendment 39-14430. Docket No. FAA-2005- 23072; Directorate Identifier 2005-NE-38-AD. Effective Date (a) This airworthiness directive (AD) becomes effective January 11, 2006. Affected ADs (b) None. Applicability (c) This AD applies to Pratt & Whitney (PW) JT9D-7R4 turbofan engines. These engines are installed on, but not limited to, Airbus A300 and A310, and Boeing 747and 767 airplanes. Unsafe Condition (d) This AD results from a report that a repair station created their own repair and performed it on 520 1st stage fan blades, without approval from PW. We are issuing this AD to prevent 1st stage fan blade fracture and uncontained engine failure, resulting in possible damage to the airplane. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. (f) Before installing the 1st stage fan blades thatare listed by part number and serial number in Table 1 of this AD, or if already installed, at the next 1st stage fan blade exposure, do the following: Table 1.--Affected 1st Stage Fan Blades Part number Serial no. Part number Serial no. Part number Serial no. 5001341 022 JW2804 831021 003 NS8584 5001341 022 ND6555 5001341 022 JW0354 831021 003 NN7272 5001341 022 M1375 5001341 022 ND5746 831021 003 MG7159 5001341 022 MG6627 5001341 022 ND5770 831021 003 NS6592 5001341 022 MG6794 5001341 022 JW3992 831021 003 ND7862 5001341 022 ND9399 5001341 022 ND8615 831021 003 ND6684 5001341 022 NE0084 5001341 022 JW0442 831021 003 NN7744 5001341 022 MG6252 5001341 022 JW2317 831021 003 ND7480 5001341 022 ND7422 5001341 022 ND8631 831021 003 ND7873 5001341 022 ND7043 5001341 022 ND8635 831021 003 ND6827 5001341 022 MG57225001341 022 JW4624 831021 003 ND6576 5001341 022 MG5918 5001341 022 NE0394 831021 003 ND9261 5001341 022 ND6984 5001341 022 NE0153 831021 003 NS8686 5001341 022 M0839 5001341 022 NN8054 831021 003 ND9052 5001341 022 M0922 5001341 022 JW4693 831021 003 ND6897 5001341 022 M0938 5001341 022 ND7304 831021 003 ND6565 5001341 022 M1117 5001341 022 MG6108 831021 003 NN8966 5001341 022 M0307 5001341 022 MG5862 831021 003 PX3707 5001341 022 JW3871 5001341 022 MG5619 831021 003 NS7031 5001341 022 M1125 5001341 022 NE0308 831021 003 ND6584 5001341 022 M1149 5001341 022 NE0200 831021 003 ND9883 5001341 022 JW2681 5001341 022 MG6797 831021 003 NS6535 5001341 022 M0270 5001341 022 JW0230 831021 003 ND7852 5001341 022 M1120 5001341 022 ND5652 831021 003 ND9662 5001341 022 M0205 5001341 022 ND5775 831021 003 ND7871 5001341 022 AE9352 5001341 022 JW0251 831021 003 JW0106 5001341 022 JW3492 5001341 022 ND5719 831021 003 ND8305 5001341 022 ND6148 5001341 022 JW0248 831021 003 NS6409 5001341 022 ND8907 5001341 022 ND5785 831021 003 NE0442 5001341 022 M1235 5001341 022 ND5676 831021 003 ND9095 5001341 022 MG5585 5001341 022 ND5661 831021 003 ND9302 5001341 022 ND8436 5001341 022 JW0265 831021 003 ND9023 5001341 022 MG5696 5001341 022 ND5699 831021 003 ND8009 5001341 022 ND8704 5001341 022 ND5767 831021 003 ND8477 5001341 022 JW2284 5001341 022 JW0259 831021 003 ND7492 5001341 023 JW2313 5001341 022 ND5680 831021 003 ND8776 5001341 024 JW2498 5001341 022 ND5749 831021 003 ND6524 5001341 025 JW2541 5001341 022 JW0235 831021 003 ND6704 5001341 026 JW2560 5001341 022 ND5776 831021 003 ND8911 5001341 027 JW2589 5001341 022 ND8580 831021 003 ND8789 5001341 028 JW2639 5001341 022 MG6039 831021 003 ND8798 5001341 029 JW2760 5001341 022 ND9127 831021 003 ND6407 5001341 030 JW2792 5001341 022 JW4287 831021 003 ND7668 5001341 031 M0579 5001341 022 JW0262 831021 003 ND9179 5001341 032 MG2825 5001341 022 JW0445 831021 003 NE0421 5001341 033 MG5477 5001341 022 JW4665 831021 003 ND6513 5001341 034 ND5917 5001341 022 MG5901 831021 003 ND6744 5001341 022 JW1976 5001341 022 NE0303 831021 003 ND7654 5001341 022 JW2653 5001341 022 ND8703 831021 003 ND7870 5001341 022 JW2608 5001341 022 JW4574 831021 003 ND9759 5001341 022 JW2727 5001341 022 JW4286 831021 003 ND6561 5001341 022 JW2764 5001341 022 JW4491 831021 003 ND5826 5001341 022 JW2265 5001341 022 JW4630831021 003 ND6031 5001341 022 JW2474 5001341 022 JW4391 831021 003 ND8714 5001341 022 JW2396 5001341 022 MG6550 831021 003 ND8872 5001341 022 JW3554 5001341 022 MG6776 831021 003 ND6678 5001341 022 JW2667 5001341 022 JW4586 831021 003 ND6629 5001341 022 MG2302 5001341 022 JW0352 831021 003 ND8995 5001341 022 MG3972 5001341 022 JW4261 831021 003 NE0302 5001341 022 JW3930 5001341 022 MG6135 831021 003 ND6405 5001341 022 ND6749 5001341 022 JW4685 831021 003 NS8300 5001341 022 M1172 5001341 022 MG6772 831021 003 NS8769 5001341 022 JW2104 5001341 022 MG6793 831021 003 NS7147 5001341 022 JW2519 5001341 022 MG7111 831021 003 ND6649 5001341 022 JW2640 5001341 022 ND8618 831021 003 ND7766 5001341 022 JW2517 5001341 022 JW0644 831021 003 NS7864 5001341 022 JW2663 5001341 022 JW4631 831021 003 NS8734 5001341 022 JW2823 5001341 022 JW4651 831021 003 ND6677 5001341 022 M0536 5001341 022 JW0234 831021 003 NS7911 5001341 022 JW2725 5001341 022 JW4646 831021 003 ND8205 5001341 022 MG5917 804121 NN9016 831021 003 ND8804 5001341 022 JW0681 804121 VJ3393 831021 003 ND6639 5001341 022 JW0711 804121 PX3694 831021 003 ND8994 5001341 022 JW0740 804121 RK9168 831021 003 ND7275 5001341 022 JW0807 804121 PX5023 831021 003 ND9195 5001341 022 JW1089 804121 VJ3324 831021 003 ND6178 5001341 022 JW1362 804121 VJ3504 831021 003 ND8639 5001341 022 JW2065 804121 NN9115 831021 003 ND9760 5001341 022 MG2434 804121 NN8936 831021 003 ND9108X 5001341 022 MG2846 804121 PX3816 831021 003 ND6427 5001341 022 JW0806 804121 VJ3412 831021 003 ND6590 804121 NN9854 804121 RK9163 831021 003 NS6551 804121 NN9024 804121 VJ3447 831021 003 JW1158 804121 NN9032 804121 RK9230 831021 003 ND6412 804121 PX5029 804121 RK9109 831021 003 ND7922 804121 NN9050 804121 PX4627 831021 003 NS8678 804121 NS8242 804121 RK8990 831021 003 ND8930 804121 NS8260 804121 SP9459 831021 003 ND6596 804121 PX4273 804121 RK8656 831021 003 ND9570 804121 PX4378 804121 NN8933 831021 003 NN9027 804121 RL0857 804121 VJ3444 831021 003 ND6446 804121 RX8763 804121 ND5864 831021 003 NE0275 804121 NS8331 804121 NN9020 831021 003 ND9917 804121 NN9824 804121 RK8905 831021 003 NS7919 804121 MG6979 804121 SR1733 831021 003 NS7907 804121 MG7023 804121 NN9047 831021 003 ND6583 804121 MG7055 804121 PX3692 831021 003 NN7420 804121 RK8914 804121 PX3786 831021 003 ND7746 804121 RL0023 804121 NN9025 831021 003 ND8187 804121 PX4328 804121 NN9007 831021 003 NN8999 804121 RK9008 804121 RK9100 831021 003 ND6043 804121 TG1506 804121 VJ3399 831021 003 ND7880 804121 KK8226 804121 PX4970 831021 003 NN7175 804121 MG2604 804121 PX5013 831021 003 ND9816 804121 NS6691 804121 RK8904 831021 003 ND8174 804121 RK8968 804121 NN8986 831021 003 ND6045 804121 NN9917 804121 NN8829 831021 003 NS7562 804121 RK7824 804121 VJ3459 831021 003 JW0075 804121 M1343 804121 RK9143 831021 003 ND6848 804121 NS6559 804121 VJ3414 831021 003 ND8531 804121 NS7767 804121 NN9028 831021 003 ND6311 804121 NE0363 804121 SP1557 831021 003 ND8144 804121 PX3771 804121 PX5003 831021 003 ND5798 804121 NN9972 804121 PX5042 831021 003 ND8113 804121 RL0460 804121 VJ3475 831021 003 ND9642 804121 RK8310 804121 ND7330 831021 003 ND7436 804121 SR2115 804121 PX3714 831021 003 ND9054 804121 TG2826 831021 003 NS8913 831021 003 ND9683 804121 PX5018 831021 003 ND6512 831021 003 ND5991 804121 PX5002 831021 003 ND6941 831021 003 ND6026 831021 003 ND7627 831021 003 ND9576 831021 003 ND6616 831021 003 ND6890 831021 003 NS7555 831021 003 ND6530 831021 003 ND7461 831021 003 NS8286 831021 003 NE0374 831021 003 ND9616 831021 003 NS7447 831021 003 ND6364 831021 003 NE0413 831021 003 ND6488 831021 003 ND7718 831021 003 NS8825 831021 003 ND8296 831021 003 ND6473 831021 003 NS6350 831021 003 ND6956 831021 003 ND6436 831021 003 NS7168 831021 003 ND7879 831021 003 ND6887 831021 003 NS7705 831021 003 ND6509 831021 003 ND6518 831021 003 NS7848 831021 003 ND9814 831021 003 ND6479 831021 003 ND9128 831021 003 NN7331 831021 003 NS6330 831021 003 ND9541 831021 003 ND6991 831021 003 ND7264 831021 003 ND9671 831021 003 ND6894 831021 003 ND8151 831021 003 ND9684 831021 003 NS6413 831021 003 ND6562 831021 003 NE0277 831021 003 ND7344 831021 003 NS8776 831021 003 NE0384 831021 003 ND6947 831021 003 ND6519 831021 003 NE0396 831021 003 NN8732 831021 003 ND7659 831021 003 ND6421 831021 003 ND8536 831021 003 NS9049 831021 003 ND6599 831021 003 ND6946 831021 003 NS6861 831021 003 ND6614 831021 003 ND6723 831021 003 ND9571 831021 003 ND7847 831021 003 ND9294 831021 003 ND9346 831021 003 ND8346 831021 003 ND9290 831021 003 ND6501 831021 003 ND8853 831021 003 ND6013 831021 003 NS8505 831021 003 ND8915 831021 003 ND8937 831021 003 ND9338 831021 003 NS8719 831021 003 NS7160 831021 003 ND9775 831021 003 NS8838 831021 003 NS6435 831021 003 ND6485 831021 003 NT0169 831021 003 NS6591 831021 003 ND7165 831021 003 NS9584 831021 003 ND9558 831021 003 ND9371 831021 003 ND6445 831021 003 NS8479 831021 003 ND9537 831021 003 ND6834 831021 003 NS9382 831021 003 NS7889 831021 003 ND7467 831021 003 ND8965 831021 003 ND7877 831021 003 ND8887 831021 003 ND9837 831021 003 ND8670 831021 003 ND6520 831021 003 ND5959 831021 003 ND9032 831021 003 NS8611 831021 003 NS6491 831021 003 ND8781 831021 003 NS7640 831021 003 NS9072 831021 003 ND8604 831021 003 NN7037 831021 003 ND9625 831021 003 ND9329 831021 003 NN7590 831021 003 ND6714 831021 003 ND9110 831021 003 NN8120 831021 003 ND6820 831021 003 ND5997 831021 003 NN8573 831021 003 ND8972 831021 003 ND6027 831021 003 NN9719 831021 003 NE0286 831021 003 ND9589 831021 003 NS8784 831021 003 NE0347 831021 003 ND6575 831021 003 TB6B367 831021 003 ND8010 831021 003 ND6592 831021 003 NN9557 831021 003 ND8956 831021 003 ND6463 831021 003 NN9710 831021 003 ND9535 831021 003 NS8583 831021 003 NS8374 831021 003 ND9831 831021 003 NS8590 831021 003 NS8770 831021 003 NE0227 831021 003 NS8567 831021 003 NS9022 831021 003 ND8283 831021 003 NS6795 831021 003 NS8416 831021 003 ND9730 831021 003 NS7110 831021 003 NS6474 831021 003 NN7656 831021 003 NS6587 831021 003 ND8912 831021 003 NS7775 831021 003 NS6404 831021 003 NT0108 831021 003 ND9815 831021 003 ND6486 831021 003 NS8836 831021 003 ND6135 5001341 022 JW0942 831021 003 NN8310 831021 003NS8491 5001341 022 ND9231 831021 003 NS6395 5001341 022 JW4812 (1) Check the 1st stage fan blade for a circled, letter I, on the approved marking area of the outboard side of the blade platform. If the blade has this marking, no further action is required. (2) Remove 1st stage fan blades without a circled, letter I, on the approved marking area of the outboard side of the blade platform, if installed. (3) Send 1st stage fan blades to a source-substantiation- approved repair station, approved by PW, for inspection of the blade root thickness. You can find information on inspecting the blade root thickness in Engine Manual Section 72-31-02, Inspect--01, and Repair--23. (g) For 1st stage fan blades that pass the inspection referenced in paragraph (f) of this AD: (1) Vibropeen the letter I and a circle around that letter, on the approved marking area of the outboard side of the blade platform. You can find information on approved blade marking in the JT9D-7R4 Engine Manual, Section 72-31-02, Typical Repair--13, Mark Repair Codes. (2) Return the 1st stage fan blades to service. Alternative Methods of Compliance (h) The Manager, Engine Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (i) None.