2010-21-16 McDonnell Douglas Corporation: Amendment 39-16476; Docket No. FAA-2010-0554; Directorate Identifier 2010-NM-082-AD. \n\nEffective Date \n\n\t(a) This airworthiness directive (AD) is effective November 18, 2010. \n\nAffected ADs \n\n\t(b) This AD supersedes AD 2009-07-04, Amendment 39-15863. \n\nApplicability \n\n\t(c) This AD applies to McDonnell Douglas Corporation Model MD- 90-30 airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin MD90-29A021, Revision 2, dated March 16, 2010. \n\nSubject \n\n\t(d) Air Transport Association (ATA) of America Code 29: Hydraulic Power. \n\nUnsafe Condition \n\n\t(e) This AD results from fuel system reviews conducted by the manufacturer, as well as reports of electrically shorted wires in the right wheel well and evidence of arcing on the auxiliary hydraulic pump power cables, which are routed within the tire burst area. The Federal Aviation Administration is issuing this AD to prevent electrically shorted wires or arcing at the auxiliary hydraulic pump power cables, which could result in a fire in the wheel well. We are also issuing this AD to reduce the potential of an ignition source adjacent to the fuel tanks, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane. \n\nCompliance \n\n\t(f) 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\nReplacement \n\n\t(g) Within 18 months after the effective date of this AD, modify the auxiliary hydraulic power system, and do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin MD90- 29A021, Revision 2, dated March 16, 2010. Do all applicable related investigative and corrective actions before further flight. \n\nAlternative Methods of Compliance (AMOCs) \n\n\t(h)(1) The Manager, Los Angeles Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Ken Sujishi, Aerospace Engineer, Cabin Safety/Mechanical and Environmental Systems Branch, ANM-150L, FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California 90712-4137; telephone (562) 627-5353; fax (562) 627-5210. \n\t(2) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD. \n\nRelated Information \n\n\t(i) For more information about this AD, contact Ken Sujishi, Aerospace Engineer, Cabin Safety/Mechanical and Environmental Systems Branch, ANM-150L, FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California 90712-4137; telephone (562) 627-5353; fax (562) 627-5210; e-mail
[email protected]. \n\nMaterial Incorporated by Reference \n\n\t(j) You must use the service information contained in Boeing Alert Service Bulletin MD90-29A021, Revision 2, dated March 16, 2010, to do the actions required by this AD, unless the AD specifies otherwise. \n\t(1) The Director of the Federal Register approved the incorporation by reference of Boeing Alert Service Bulletin MD90- 29A021, Revision 2, dated March 16, 2010, under 5 U.S.C. 552(a) and 1 CFR part 51. \n\t(2) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, 3855 Lakewood Boulevard, MC D800-0019, Long Beach, California 90846- 0001; telephone 206-544-5000, extension 2; fax 206-766-5683; e-mail
[email protected]; Internet https://www.myboeingfleet.com. \n\t(3) You may review copies of the service information at the FAA, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221. \n\t(4) You may also review copies of the service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at an NARA facility, call 202-741-6030, or go to http:// www.archives.gov/federal_register/code_of_federal_regulations/ ibr_locations.html.
