AD 2010-25-04 Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-30, DC-9-40, and DC-9-50 Series Airplanes, Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes, and Model MD-88 and MD-90-30 Airplanes

This AD applies to McDonnell Douglas Corporation Model DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-32F (C-9A, C-9B), DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51, DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87), MD-88, and MD-90-30 airplanes; certificated in any category; as identified in Boeing Service Bulletins DC9-28-212 and MD90-28-010, both Revision 1, both dated June 16, 2009.

Comply with this AD within the compliance times specified, unless already done. Modification (g) Within 60 months after the effective date of this AD: Modify the fuel boost pumps for the center wing, and forward or aft auxiliary fuel tanks, as applicable, by doing all the applicable actions specified in the Accomplishment Instructions of Boeing Service Bulletins DC9-28-212 (for Model DC-9-30, DC-9-40, and DC-9-50 series airplanes); and Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 airplanes) and MD90-28-010 (for Model MD-90-30 airplanes), both Revision 1, both dated June 16, 2009. For airplanes on which the auxiliary fuel tanks have been removed before the effective date of this AD, the actions for the auxiliary fuel tanks specified in this paragraph are not required. Prior or Concurrent Action (h) Prior to or concurrently with accomplishing the modification required by paragraph (g) of this AD: Do the modification specified in Argo-Tech Service Bulletin 398000-28-2, Revision 1, dated December 2, 2008. Credit for Actions Done In Accordance With Previous Issue of the Service Information (i) Actions done before the effective date of this AD in accordance with the service information identified in Table 1 of this AD are acceptable for compliance with the corresponding requirements of paragraphs (g) and (h) of this AD. Table 1—Credit Service Information Document Date Argo-Tech Service Bulletin 398000-28-2 November 8, 2007. Boeing Service Bulletin DC9-28-212 February 22, 2008. Boeing Service Bulletin MD90-28-010 February 22, 2008. Alternative Methods of Compliance (AMOCs) (j)(1) The Manager, Los Angeles Aircraft Certification Office (ACO), FAA, ATTN: Serj Harutunian, Aerospace Engineer, Propulsion Branch, ANM-140L, FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California 90712-4137; telephone (562) 627-5254; fax (562) 627-5210; has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. (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. Material Incorporated by Reference (k) You must use the applicable service information contained in Table 2 of this AD to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. Table 2—Material Incorporated by Reference Document Revision Date Argo-Tech Service Bulletin 398000-28-2 1 December 2, 2008. Boeing Service Bulletin DC9-28-212 1 June 16, 2009. Boeing Service Bulletin MD90-28-010 1 June 16, 2009. (2) For Boeing 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 dse.boecom@boeing.com; Internet https://www.myboeingfleet.com . For Argo-Tech service information identified in this AD, contact Argo-Tech Corporation, 23555 Euclid Avenue, Cleveland, Ohio 44117; telephone 216-692-6000. (3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221. (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 NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Issued in Renton, Washington, on November 24, 2010. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010-30518 Filed 12-6-10; 8:45 am] BILLING CODE 4910-13-P

This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent possible sources of ignition in a fuel tank caused by an electrical fault in the fuel boost pumps. An ignition source in the fuel tank could result in a fire or an explosion and consequent loss of the airplane.