AD 2004-22-20

The FAA is adopting a new airworthiness directive (AD) for certain McDonnell Douglas Model MD-11 and MD-11F airplanes. This AD requires replacement of low base terminal boards, related investigative action, and corrective actions if necessary. This AD is prompted by arcing between a power feeder cable and terminal board support bracket. We are issuing this AD to prevent arcing damage to the power feeder cables, terminal boards, and adjacent structure, which could result in smoke and/or fire in the cabin.

Final rule.

2004-22-20 McDonnell Douglas: Amendment 39-13848. Docket No. FAA- 2004-18572; Directorate Identifier 2003-NM-72-AD. \n\nEffective Date \n\n\t(a) This AD becomes effective December 14, 2004. \n\nAffected ADs \n\n\t(b) None. \n\nApplicability \n\n\t(c) This AD applies to McDonnell Douglas Model MD-11 and MD-11F airplanes, as listed in McDonnell Douglas Alert Service Bulletin MD11-24A175, Revision 01, dated April 25, 2003; certificated in any category. \n\nUnsafe Condition \n\n\t(d) This AD was prompted by arcing between a power feeder cable and terminal board support bracket. We are issuing this AD to prevent arcing damage to the power feeder cables, terminal boards, and adjacent structure, which could result in smoke and/or fire in the cabin. \n\nCompliance \n\n\t(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. \n\nService Bulletin References \n\n\t(f) The term "service bulletin," as used in this AD, means the Accomplishment Instructions of McDonnell Douglas Alert Service Bulletin MD11-24A175, Revision 01, dated April 25, 2003, including Boeing Information Notices MD11-24A175 IN 01, dated November 6, 2003, and MD11-24A175 IN 02, dated December 17, 2003. \n\nReplacement, Related Investigative Action, and Corrective Actions \n\n\t(g) Within 18 months after the effective date of this AD, replace low base terminal boards with higher base terminal boards in accordance with the applicable figure in the service bulletin, and do all related investigative action/applicable corrective actions by accomplishing all the actions in the service bulletin, except as provided by paragraph (h) of this AD. Any related investigative action/applicable corrective actions must be done before further flight. \n\n\t(h) If, during the corrective actions required by paragraph (g) of this AD, the type of structural material that has been damaged is not covered in the structural repair manual,before further flight, repair in accordance with a method approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA. \n\nParts Installation \n\n\t(i) As of the effective date of this AD, no person may install a terminal board, as listed in section 1.A.2. "Spares Affected" of the Planning Information of the service bulletin, on any airplane. \n\nNo Reporting \n\n\t(j) Although the service bulletin referenced in this AD specifies to submit certain information to the manufacturer, this AD does not include that requirement. \n\nAlternative Methods of Compliance (AMOCs) \n\n\t(k) The Manager, Los Angeles ACO, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. \n\nMaterial Incorporated by Reference \n\n\t(l) You must use McDonnell Douglas Alert Service Bulletin MD11- 24A175, Revision 01, dated April 25, 2003, including Boeing Information Notice MD11-24A175 IN 01, dated November 6, 2003, and Boeing Information Notice MD11-24A175 IN 02, dated December 17, 2003, to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approves the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. For copies of the service information, contact Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1-L5A (D800-0024). For information on the availability of this material at the National Archives and Records Administration (NARA), call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. \n\t\n\tYou may view the AD docket at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., room PL-401, Nassif Building, Washington, DC.

The FAA proposed to amend 14 CFR part 39 with an AD for certain McDonnell Douglas Model MD-11 and MD-11F airplanes. That action, published in the Federal Register on July 13, 2004 (69 FR 41992), proposed to require replacement of low base terminal boards, related investigative action, and corrective actions if necessary. \n\nComments \n\n\tWe provided the public the opportunity to participate in the development of this AD. No comments have been submitted on the proposed AD or on the determination of the cost to the public. \n\nConclusion \n\n\tWe have carefully reviewed the available data and determined that air safety and the public interest require adopting the AD as proposed. \n\nCosts of Compliance \n\n\tThere are about 152 airplanes of the affected design in the worldwide fleet. This AD will affect about 52 airplanes of U.S. registry. The following table provides the estimated costs for U.S. operators to comply with this AD. \n\n\tEstimated Costs \n\n\nAirplanes identified in the service bulletin as--\nWork hours\nAverage labor rate per hour \nParts cost \nCost per airplane (depending on the airplane configuration) \nGroup 1\nGroups 2 and 5\nGroups 3, 4, and 6\n3\n1\n5\n$65\n65\n65\n$45-$384\n45-384\n45-384\n$240-$579\n110-449\n175-514\n\nRegulatory Findings \n\n\tWe have determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. \n\n\tFor the reasons discussed above, I certify that this AD: \n\n\t(1) Is not a "significant regulatory action" under Executive Order 12866; \n\n\t(2) Is not a "significant rule" under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and \n\n\t(3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. \n\n\tWe prepared a regulatory evaluation of the estimated costs to comply with this AD. See the ADDRESSES section for a location to examine the regulatory evaluation. \n\nList of Subjects in 14 CFR Part 39 \n\n\tAir transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. \n\nAdoption of the Amendment \n\nAccordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n1. The authority citation for part 39 continues to read as follows: \n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\nSec. 39.13 (Amended) \n\n2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD):