Airworthiness Directive · Amendment 39-14430 · Pratt & Whitney JT9D-7R4 Turbofan Engines
Pratt & Whitney JT9D-7R4 Turbofan Engines
Superseded. A later AD replaced this one: AD 2007-18-06. Comply with the one in force.
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.
The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney (PW) JT9D-7R4 turbofan engines. This AD requires inspection of the blade root thickness of 1st stage fan blades identified by part number (P/N) and serial number (SN) in this AD, by a repair station approved by PW to perform the inspection. 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.
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 that are 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:
| Part number | Serial no. |
|---|---|
| 5001341-022 | JW2804 |
| 5001341-022 | JW0354 |
| 5001341-022 | ND5746 |
| 5001341-022 | ND5770 |
| 5001341-022 | JW3992 |
| 5001341-022 | ND8615 |
| 5001341-022 | JW0442 |
| 5001341-022 | JW2317 |
| 5001341-022 | ND8631 |
| 5001341-022 | ND8635 |
| 5001341-022 | JW4624 |
| 5001341-022 | NE0394 |
| 5001341-022 | NE0153 |
| 5001341-022 | NN8054 |
| 5001341-022 | JW4693 |
| 5001341-022 | ND7304 |
| 5001341-022 | MG6108 |
| 5001341-022 | MG5862 |
| 5001341-022 | MG5619 |
| 5001341-022 | NE0308 |
| 5001341-022 | NE0200 |
| 5001341-022 | MG6797 |
| 5001341-022 | JW0230 |
| 5001341-022 | ND5652 |
| 5001341-022 | ND5775 |
| 5001341-022 | JW0251 |
| 5001341-022 | ND5719 |
| 5001341-022 | JW0248 |
| 5001341-022 | ND5785 |
| 5001341-022 | ND5676 |
| 5001341-022 | ND5661 |
| 5001341-022 | JW0265 |
| 5001341-022 | ND5699 |
| 5001341-022 | ND5767 |
| 5001341-022 | JW0259 |
| 5001341-022 | ND5680 |
| 5001341-022 | ND5749 |
| 5001341-022 | JW0235 |
| 5001341-022 | ND5776 |
| 5001341-022 | ND8580 |
| 5001341-022 | MG6039 |
| 5001341-022 | ND9127 |
| 5001341-022 | JW4287 |
| 5001341-022 | JW0262 |
| 5001341-022 | JW0445 |
| 5001341-022 | JW4665 |
| 5001341-022 | MG5901 |
| 5001341-022 | NE0303 |
| 5001341-022 | ND8703 |
| 5001341-022 | JW4574 |
| 5001341-022 | JW4286 |
| 5001341-022 | JW4491 |
| 5001341-022 | JW4630 |
| 5001341-022 | JW4391 |
| 5001341-022 | MG6550 |
| 5001341-022 | MG6776 |
| 5001341-022 | JW4586 |
| 5001341-022 | JW0352 |
| 5001341-022 | JW4261 |
| 5001341-022 | MG6135 |
| 5001341-022 | JW4685 |
| 5001341-022 | MG6772 |
| 5001341-022 | MG6793 |
| 5001341-022 | MG7111 |
| 5001341-022 | ND8618 |
| 5001341-022 | JW0644 |
| 5001341-022 | JW4631 |
| 5001341-022 | JW4651 |
| 5001341-022 | JW0234 |
| 5001341-022 | JW4646 |
| 804121 | NN9016 |
| 804121 | VJ3393 |
| 804121 | PX3694 |
| 804121 | RK9168 |
| 804121 | PX5023 |
| 804121 | VJ3324 |
| 804121 | VJ3504 |
| 804121 | NN9115 |
| 804121 | NN8936 |
| 804121 | PX3816 |
| 804121 | VJ3412 |
| 804121 | RK9163 |
| 804121 | VJ3447 |
| 804121 | RK9230 |
| 804121 | RK9109 |
| 804121 | PX4627 |
| 804121 | RK8990 |
| 804121 | SP9459 |
| 804121 | RK8656 |
| 804121 | NN8933 |
| 804121 | VJ3444 |
| 804121 | ND5864 |
| 804121 | NN9020 |
| 804121 | RK8905 |
| 804121 | SR1733 |
| 804121 | NN9047 |
| 804121 | PX3692 |
| 804121 | PX3786 |
| 804121 | NN9025 |
| 804121 | NN9007 |
| 804121 | RK9100 |
| 804121 | VJ3399 |
| 804121 | PX4970 |
| 804121 | PX5013 |
| 804121 | RK8904 |
| 804121 | NN8986 |
| 804121 | NN8829 |
| 804121 | VJ3459 |
| 804121 | RK9143 |
| 804121 | VJ3414 |
| 804121 | NN9028 |
| 804121 | SP1557 |
| 804121 | PX5003 |
| 804121 | PX5042 |
| 804121 | VJ3475 |
| 804121 | ND7330 |
| 804121 | PX3714 |
| 831021-003 | NS8913 |
| 831021-003 | ND6512 |
| 831021-003 | ND6941 |
| 831021-003 | ND9576 |
| 831021-003 | NS7555 |
| 831021-003 | NS8286 |
| 831021-003 | NS7447 |
| 831021-003 | ND6488 |
| 831021-003 | ND8296 |
| 831021-003 | ND6956 |
| 831021-003 | ND7879 |
| 831021-003 | ND6509 |
| 831021-003 | ND9814 |
| 831021-003 | NN7331 |
| 831021-003 | ND6991 |
| 831021-003 | ND6894 |
| 831021-003 | NS6413 |
| 831021-003 | ND7344 |
| 831021-003 | ND6947 |
| 831021-003 | NN8732 |
| 831021-003 | ND8536 |
| 831021-003 | ND6946 |
| 831021-003 | ND6723 |
| 831021-003 | ND9294 |
| 831021-003 | ND9290 |
| 831021-003 | ND6013 |
| 831021-003 | ND8937 |
| 831021-003 | NS7160 |
| 831021-003 | NS6435 |
| 831021-003 | NS6591 |
| 831021-003 | ND9558 |
| 831021-003 | NS8479 |
| 831021-003 | NS9382 |
| 831021-003 | ND8965 |
| 831021-003 | ND9837 |
| 831021-003 | ND5959 |
| 831021-003 | NS6491 |
| 831021-003 | NS9072 |
| 831021-003 | ND9625 |
| 831021-003 | ND6714 |
| 831021-003 | ND6820 |
| 831021-003 | ND8972 |
| 831021-003 | NE0286 |
| 831021-003 | NE0347 |
| 831021-003 | ND8010 |
| 831021-003 | ND8956 |
| 831021-003 | ND9535 |
| 831021-003 | ND9831 |
| 831021-003 | NE0227 |
| 831021-003 | ND8283 |
| 831021-003 | ND9730 |
| 831021-003 | NN7656 |
| 831021-003 | NS7775 |
| 831021-003 | ND9815 |
| 831021-003 | ND6135 |
| 831021-003 | NS8491 |
| 831021-003 | NS6395 |
| 831021-003 | NS8584 |
| 831021-003 | NN7272 |
| 831021-003 | MG7159 |
| 831021-003 | NS6592 |
| 831021-003 | ND7862 |
| 831021-003 | ND6684 |
| 831021-003 | NN7744 |
| 831021-003 | ND7480 |
| 831021-003 | ND7873 |
| 831021-003 | ND6827 |
| 831021-003 | ND6576 |
| 831021-003 | ND9261 |
| 831021-003 | NS8686 |
| 831021-003 | ND9052 |
| 831021-003 | ND6897 |
| 831021-003 | ND6565 |
| 831021-003 | NN8966 |
| 831021-003 | PX3707 |
| 831021-003 | NS7031 |
| 831021-003 | ND6584 |
| 831021-003 | ND9883 |
| 831021-003 | NS6535 |
| 831021-003 | ND7852 |
| 831021-003 | ND9662 |
| 831021-003 | ND7871 |
| 831021-003 | JW0106 |
| 831021-003 | ND8305 |
| 831021-003 | NS6409 |
| 831021-003 | NE0442 |
| 831021-003 | ND9095 |
| 831021-003 | ND9302 |
| 831021-003 | ND9023 |
| 831021-003 | ND8009 |
| 831021-003 | ND8477 |
| 831021-003 | ND7492 |
| 831021-003 | ND8776 |
| 831021-003 | ND6524 |
| 831021-003 | ND6704 |
| 831021-003 | ND8911 |
| 831021-003 | ND8789 |
| 831021-003 | ND8798 |
| 831021-003 | ND6407 |
| 831021-003 | ND7668 |
| 831021-003 | ND9179 |
| 831021-003 | NE0421 |
| 831021-003 | ND6513 |
| 831021-003 | ND6744 |
| 831021-003 | ND7654 |
| 831021-003 | ND7870 |
| 831021-003 | ND9759 |
| 831021-003 | ND6561 |
| 831021-003 | ND5826 |
| 831021-003 | ND6031 |
| 831021-003 | ND8714 |
| 831021-003 | ND8872 |
| 831021-003 | ND6678 |
| 831021-003 | ND6629 |
| 831021-003 | ND8995 |
| 831021-003 | NE0302 |
| 831021-003 | ND6405 |
| 831021-003 | NS8300 |
| 831021-003 | NS8769 |
| 831021-003 | NS7147 |
| 831021-003 | ND6649 |
| 831021-003 | ND7766 |
| 831021-003 | NS7864 |
| 831021-003 | NS8734 |
| 831021-003 | ND6677 |
| 831021-003 | NS7911 |
| 831021-003 | ND8205 |
| 831021-003 | ND8804 |
| 831021-003 | ND6639 |
| 831021-003 | ND8994 |
| 831021-003 | ND7275 |
| 831021-003 | ND9195 |
| 831021-003 | ND6178 |
| 831021-003 | ND8639 |
| 831021-003 | ND9760 |
| 831021-003 | ND9108X |
| 831021-003 | ND6427 |
| 831021-003 | ND6590 |
| 831021-003 | NS6551 |
| 831021-003 | JW1158 |
| 831021-003 | ND6412 |
| 831021-003 | ND7922 |
| 831021-003 | NS8678 |
| 831021-003 | ND8930 |
| 831021-003 | ND6596 |
| 831021-003 | ND9570 |
| 831021-003 | NN9027 |
| 831021-003 | ND6446 |
| 831021-003 | NE0275 |
| 831021-003 | ND9917 |
| 831021-003 | NS7919 |
| 831021-003 | NS7907 |
| 831021-003 | ND6583 |
| 831021-003 | NN7420 |
| 831021-003 | ND7746 |
| 831021-003 | ND8187 |
| 831021-003 | NN8999 |
| 831021-003 | ND6043 |
| 831021-003 | ND7880 |
| 831021-003 | NN7175 |
| 831021-003 | ND9816 |
| 831021-003 | ND8174 |
| 831021-003 | ND6045 |
| 831021-003 | NS7562 |
| 831021-003 | JW0075 |
| 831021-003 | ND6848 |
| 831021-003 | ND8531 |
| 831021-003 | ND6311 |
| 831021-003 | ND8144 |
| 831021-003 | ND5798 |
| 831021-003 | ND8113 |
| 831021-003 | ND9642 |
| 831021-003 | ND7436 |
| 831021-003 | ND9054 |
| 831021-003 | ND9683 |
| 831021-003 | ND5991 |
| 831021-003 | ND6026 |
| 831021-003 | ND6616 |
| 831021-003 | ND6530 |
| 831021-003 | NE0374 |
| 831021-003 | ND6364 |
| 831021-003 | ND7718 |
| 831021-003 | ND6473 |
| 831021-003 | ND6436 |
| 831021-003 | ND6887 |
| 831021-003 | ND6518 |
| 831021-003 | ND6479 |
| 831021-003 | NS6330 |
| 831021-003 | ND7264 |
| 831021-003 | ND8151 |
| 831021-003 | ND6562 |
| 831021-003 | NS8776 |
| 831021-003 | ND6519 |
| 831021-003 | ND7659 |
| 831021-003 | NS9049 |
| 831021-003 | NS6861 |
| 831021-003 | ND9571 |
| 831021-003 | ND9346 |
| 831021-003 | ND6501 |
| 831021-003 | NS8505 |
| 831021-003 | ND9338 |
| 831021-003 | ND9775 |
| 831021-003 | ND6485 |
| 831021-003 | ND7165 |
| 831021-003 | ND9371 |
| 831021-003 | ND9537 |
| 831021-003 | NS7889 |
| 831021-003 | ND7877 |
| 831021-003 | ND8670 |
| 831021-003 | ND9032 |
| 831021-003 | ND8781 |
| 831021-003 | ND8604 |
| 831021-003 | ND9329 |
| 831021-003 | ND9110 |
| 831021-003 | ND5997 |
| 831021-003 | ND6027 |
| 831021-003 | ND9589 |
| 831021-003 | ND6575 |
| 831021-003 | ND6592 |
| 831021-003 | ND6463 |
| 831021-003 | NS8583 |
| 831021-003 | NS8590 |
| 831021-003 | NS8567 |
| 831021-003 | NS6795 |
| 831021-003 | NS7110 |
| 831021-003 | NS6587 |
| 831021-003 | NS6404 |
| 831021-003 | ND6486 |
| 5001341-022 | JW0942 |
| 5001341-022 | ND9231 |
| 5001341-022 | JW4812 |
| 5001341-022 | ND6555 |
| 5001341-022 | M1375 |
| 5001341-022 | MG6627 |
| 5001341-022 | MG6794 |
| 5001341-022 | ND9399 |
| 5001341-022 | NE0084 |
| 5001341-022 | MG6252 |
| 5001341-022 | ND7422 |
| 5001341-022 | ND7043 |
| 5001341-022 | MG5722 |
| 5001341-022 | MG5918 |
| 5001341-022 | ND6984 |
| 5001341-022 | M0839 |
| 5001341-022 | M0922 |
| 5001341-022 | M0938 |
| 5001341-022 | M1117 |
| 5001341-022 | M0307 |
| 5001341-022 | JW3871 |
| 5001341-022 | M1125 |
| 5001341-022 | M1149 |
| 5001341-022 | JW2681 |
| 5001341-022 | M0270 |
| 5001341-022 | M1120 |
| 5001341-022 | M0205 |
| 5001341-022 | AE9352 |
| 5001341-022 | JW3492 |
| 5001341-022 | ND6148 |
| 5001341-022 | ND8907 |
| 5001341-022 | M1235 |
| 5001341-022 | MG5585 |
| 5001341-022 | ND8436 |
| 5001341-022 | MG5696 |
| 5001341-022 | ND8704 |
| 5001341-022 | JW2284 |
| 5001341-023 | JW2313 |
| 5001341-024 | JW2498 |
| 5001341-025 | JW2541 |
| 5001341-026 | JW2560 |
| 5001341-027 | JW2589 |
| 5001341-028 | JW2639 |
| 5001341-029 | JW2760 |
| 5001341-030 | JW2792 |
| 5001341-031 | M0579 |
| 5001341-032 | MG2825 |
| 5001341-033 | MG5477 |
| 5001341-034 | ND5917 |
| 5001341-022 | JW1976 |
| 5001341-022 | JW2653 |
| 5001341-022 | JW2608 |
| 5001341-022 | JW2727 |
| 5001341-022 | JW2764 |
| 5001341-022 | JW2265 |
| 5001341-022 | JW2474 |
| 5001341-022 | JW2396 |
| 5001341-022 | JW3554 |
| 5001341-022 | JW2667 |
| 5001341-022 | MG2302 |
| 5001341-022 | MG3972 |
| 5001341-022 | JW3930 |
| 5001341-022 | ND6749 |
| 5001341-022 | M1172 |
| 5001341-022 | JW2104 |
| 5001341-022 | JW2519 |
| 5001341-022 | JW2640 |
| 5001341-022 | JW2517 |
| 5001341-022 | JW2663 |
| 5001341-022 | JW2823 |
| 5001341-022 | M0536 |
| 5001341-022 | JW2725 |
| 5001341-022 | MG5917 |
| 5001341-022 | JW0681 |
| 5001341-022 | JW0711 |
| 5001341-022 | JW0740 |
| 5001341-022 | JW0807 |
| 5001341-022 | JW1089 |
| 5001341-022 | JW1362 |
| 5001341-022 | JW2065 |
| 5001341-022 | MG2434 |
| 5001341-022 | MG2846 |
| 5001341-022 | JW0806 |
| 804121 | NN9854 |
| 804121 | NN9024 |
| 804121 | NN9032 |
| 804121 | PX5029 |
| 804121 | NN9050 |
| 804121 | NS8242 |
| 804121 | NS8260 |
| 804121 | PX4273 |
| 804121 | PX4378 |
| 804121 | RL0857 |
| 804121 | RX8763 |
| 804121 | NS8331 |
| 804121 | NN9824 |
| 804121 | MG6979 |
| 804121 | MG7023 |
| 804121 | MG7055 |
| 804121 | RK8914 |
| 804121 | RL0023 |
| 804121 | PX4328 |
| 804121 | RK9008 |
| 804121 | TG1506 |
| 804121 | KK8226 |
| 804121 | MG2604 |
| 804121 | NS6691 |
| 804121 | RK8968 |
| 804121 | NN9917 |
| 804121 | RK7824 |
| 804121 | M1343 |
| 804121 | NS6559 |
| 804121 | NS7767 |
| 804121 | NE0363 |
| 804121 | PX3771 |
| 804121 | NN9972 |
| 804121 | RL0460 |
| 804121 | RK8310 |
| 804121 | SR2115 |
| 804121 | TG2826 |
| 804121 | PX5018 |
| 804121 | PX5002 |
| 831021-003 | ND7627 |
| 831021-003 | ND6890 |
| 831021-003 | ND7461 |
| 831021-003 | ND9616 |
| 831021-003 | NE0413 |
| 831021-003 | NS8825 |
| 831021-003 | NS6350 |
| 831021-003 | NS7168 |
| 831021-003 | NS7705 |
| 831021-003 | NS7848 |
| 831021-003 | ND9128 |
| 831021-003 | ND9541 |
| 831021-003 | ND9671 |
| 831021-003 | ND9684 |
| 831021-003 | NE0277 |
| 831021-003 | NE0384 |
| 831021-003 | NE0396 |
| 831021-003 | ND6421 |
| 831021-003 | ND6599 |
| 831021-003 | ND6614 |
| 831021-003 | ND7847 |
| 831021-003 | ND8346 |
| 831021-003 | ND8853 |
| 831021-003 | ND8915 |
| 831021-003 | NS8719 |
| 831021-003 | NS8838 |
| 831021-003 | NT0169 |
| 831021-003 | NS9584 |
| 831021-003 | ND6445 |
| 831021-003 | ND6834 |
| 831021-003 | ND7467 |
| 831021-003 | ND8887 |
| 831021-003 | ND6520 |
| 831021-003 | NS8611 |
| 831021-003 | NS7640 |
| 831021-003 | NN7037 |
| 831021-003 | NN7590 |
| 831021-003 | NN8120 |
| 831021-003 | NN8573 |
| 831021-003 | NN9719 |
| 831021-003 | NS8784 |
| 831021-003 | TB6B367 |
| 831021-003 | NN9557 |
| 831021-003 | NN9710 |
| 831021-003 | NS8374 |
| 831021-003 | NS8770 |
| 831021-003 | NS9022 |
| 831021-003 | NS8416 |
| 831021-003 | NS6474 |
| 831021-003 | ND8912 |
| 831021-003 | NT0108 |
| 831021-003 | NS8836 |
| 831021-003 | NN8310 |
(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.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
