Airworthiness Directive · Amendment 39-11138 · McDonnell Douglas Model MD-11 Series Airplanes
McDonnell Douglas Model MD-11 Series Airplanes
Superseded. A later AD replaced this one: AD 99-24-03. Comply with the one in force.
Model MD-11 series airplanes, certificated in any category; having the following fuselage/factory serial numbers: Fuselage No. Serial No. 532....................................................... 48532 542....................................................... 48565 543....................................................... 48566 544....................................................... 48533 545....................................................... 48549 546....................................................... 48470 547....................................................... 48406 548....................................................... 48504 549....................................................... 48602 551....................................................... 48603 552....................................................... 48571 553....................................................... 48604 554....................................................... 48439 555....................................................... 48605 556....................................................... 48572 558....................................................... 48471 559....................................................... 48573 560....................................................... 48600 562....................................................... 48601 563....................................................... 48633 564....................................................... 48513 566....................................................... 48574 568....................................................... 48575 570....................................................... 48542 572....................................................... 48543 574....................................................... 48576 576....................................................... 48415 579....................................................... 48631 580....................................................... 48544 582....................................................... 48632 583....................................................... 48577 587....................................................... 48545 588....................................................... 48578 589....................................................... 48546 590....................................................... 48743 592....................................................... 48744 594....................................................... 48747 595....................................................... 48748 596....................................................... 48745 597....................................................... 48746 598....................................................... 48749 599....................................................... 48579 600....................................................... 48766 601....................................................... 48768 602....................................................... 48767 603....................................................... 48769 604....................................................... 48754 605....................................................... 48623 607....................................................... 48770 608....................................................... 48753 609....................................................... 48773 610....................................................... 48774 613....................................................... 48755 615....................................................... 48758 616....................................................... 48775 617....................................................... 48776 618....................................................... 48777 619....................................................... 48778 620....................................................... 48779 622....................................................... 48624 623....................................................... 48756 624....................................................... 48780
This document published in the Federal Register an amendment adopting airworthiness directive (AD) 99-08-51 that was sent previously to all known U.S. owners and operators of certain McDonnell Douglas Model MD-11 series airplanes by individual notices. This AD requires visual inspections under the floorboards in the lower center cargo compartment at frame 1681 to verify that a certain bracket and a certain open face nylon clamp are installed to a specific support wire bundle and to detect damage of the subject wire bundle; repair of damaged wiring; and installation of certain silicone rubber coated with a glass cloth protective wrap around the wire bundle, if necessary. This action is prompted by an incident in which the insulation blanket between frames 1661 and 1681 in the lower center cargo compartment was found to be burnt due to a missing wiring harness support bracket/clamp on the wire bundle at frame 1681. The actions specified by this AD are intended to ensure that such a wire harness support bracket/clamp is installed; a missing bracket/clamp could cause the wire bundle to chafe against the frame, which could result in sparks, smoke, and possible fire in the lower center cargo compartment.
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.
