Airworthiness Directive · Amendment 39-11154 · 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Superseded.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. 447........................................................ 48401 448........................................................ 48402 449........................................................ 48458 453........................................................ 48411 454........................................................ 48412 455........................................................ 48449 456........................................................ 48407 457........................................................ 48408 461........................................................ 48495 466........................................................ 48416 467........................................................ 48417 470........................................................ 48459 475........................................................ 48461 476........................................................ 48434 478........................................................ 48435 479........................................................ 48450 484........................................................ 48484 486........................................................ 48499 488........................................................ 48413 491........................................................ 48414 492........................................................ 48489 493........................................................ 48500 495........................................................ 48410 496........................................................ 48496 497........................................................ 48460 501........................................................ 48418 502........................................................ 48485 505........................................................ 48451 506........................................................ 48437 509........................................................ 48486 512........................................................ 48497 515........................................................ 48514 516........................................................ 48523 517........................................................ 48547 518........................................................ 48468 519........................................................ 48469 520........................................................ 48502 521........................................................ 48548 523........................................................ 48404 524........................................................ 48405 525........................................................ 48518 528........................................................ 48503 529........................................................ 48512 533........................................................ 48538 539........................................................ 48519 541........................................................ 48520 450........................................................ 48419 451........................................................ 48420 452........................................................ 48421 462........................................................ 48505 469........................................................ 48487 480........................................................ 48472 481........................................................ 48473 482........................................................ 48481 483........................................................ 48436 485........................................................ 48474 489........................................................ 48475 499........................................................ 48490 503........................................................ 48491 504........................................................ 58527 507........................................................ 48528 510........................................................ 48476 511........................................................ 48477 513........................................................ 48501 514........................................................ 48478 522........................................................ 48498 526........................................................ 48550 527........................................................ 48551 530........................................................ 48552 531........................................................ 48553 535........................................................ 48554 536........................................................ 48479 537........................................................ 48596 538........................................................ 48480 540........................................................ 48597 550........................................................ 48598
This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 99-09-51 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.
