AD 2010-21-03 Airworthiness Directives; McDonnell Douglas Corporation Model DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, and DC-8-43 Airplanes; Model DC-8-50 Series Airplanes; Model DC-8F-54 and DC-8F-55 Airplanes; Model DC-8-60 Series Airplanes; Model DC-8-60F Series Airplanes; Model DC-8-70 Series Airplanes; and Model DC-8-70F Series Airplanes

Models named: DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, DC-8-43, DC-8-51, DC-8-52, DC-8-53, DC-8-55. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to all McDonnell Douglas Model DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, and DC-8-43 airplanes; Model DC-8-51, DC-8-52, DC-8-53, and DC-8-55 airplanes; Model DC-8F-54 and DC-8F-55 airplanes; Model DC-8-61, DC-8-62, and DC-8-63 airplanes; Model DC-8-61F, DC-8-62F, and DC-8-63F airplanes; Model DC-8-71, DC-8-72, and DC-8-73 airplanes; and Model DC-8-71F, DC-8-72F, and DC-8-73F airplanes; certificated in any category. Note 1: This AD requires revisions to certain operator maintenance documents to include new inspections. Compliance with these inspections is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by these inspections, the operator may not be able to accomplish the inspections described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance (AMOC) in accordance with paragraph (o) of this AD. The request should include a description of changes to the required inspections that will ensure the continued operational safety of the airplane.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Restatement of Requirements of AD 2008-09-04, With Revised Compliance Method Revise the Maintenance Program (g) Before December 16, 2008, revise the maintenance program to incorporate the information specified in Appendixes B, C, and D of the Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision A, dated August 8, 2006. No Reporting Requirement (h) Although the Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision A, dated August 8, 2006, specifies to submit certain information to the manufacturer, this AD does not require that action. No Alternative Inspections, Inspection Intervals, or Critical Design Configuration Control Limitations (CDCCLs) (i) Except as provided by paragraph (m) of this AD, after accomplishing the applicable actions specified in paragraph (g) of this AD, no alternative inspections, inspection intervals, or CDCCLs may be used unless the inspections, intervals, or CDCCLs are approved as an AMOC in accordance with the procedures specified in paragraph (o) of this AD. New Requirements of This AD Revise the Maintenance Program (j) Within 30 days after the effective date of this AD, revise the maintenance program to incorporate the information required by paragraphs (j)(1), (j)(2), and (j)(3) of this AD. (1) CDCCL 20-10, “DC-8 Float Switch Circuit” in Appendix B of Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision C, dated January 5, 2010; or Revision D, dated June 9, 2010. (2) ALI 30-1 “DC-8 Pneumatic System Decay Check” in Appendix C of Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision C, dated January 5, 2010; or Revision D, dated June 9, 2010. (3) ALI 28-1, “DC-8 Alternate and Center Auxiliary Tank Fuel Pump Control Systems Check,” in Appendix C of Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision C, dated January 5, 2010; or Revision D, dated June 9, 2010. Install the In-Line Fuses (k) For airplanes identified in Boeing Service Bulletin DC8-28-090, dated October 9, 2009: Within 60 months after the effective date of this AD, install the fuel tank float switch in-line fuses in the leading edges of the front spars of the left and right wings, in accordance with the Accomplishment Instructions of Boeing Service Bulletin DC8-28-090, dated October 9, 2009. No Alternative Inspections, Inspection Intervals, or Critical Design Configuration Control Limitations (CDCCLs) (l) After accomplishing the actions specified in paragraph (j) of this AD, no alternative inspections, inspection intervals, or CDCCLs may be used unless the inspections, intervals, or CDCCLs are approved as an AMOC in accordance with the procedures specified in paragraph (o) of this AD. (m) Revising the maintenance program to incorporate the information specified in Appendixes B, C, and D of the Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision B, dated July 23, 2009; Revision C, dated January 5, 2010; or Revision D, dated June 9, 2010; is acceptable for compliance with the actions specified in paragraph (g) of this AD. No Reporting Requirement (n) Although the Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision B, dated July 23, 2009; Revision C, dated January 5, 2010; and Revision D, dated June 9, 2010; specify to submit certain information to the manufacturer, this AD does not require that action. Alternative Methods of Compliance (AMOCs) (o)(1) The Manager, Los Angeles Aircraft Certification Office (ACO), 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: Samuel Lee, Aerospace Engineer, Propulsion Branch, ANM-140L, FAA, Los Angeles Aircraft Certification Office (ACO), 3960 Paramount Boulevard, Lakewood, California 90712-4137; telephone (562) 627-5262; fax (562) 627-5210. (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 (p) You must use the applicable service information contained in Table 1 of this AD to do the actions required by this AD, unless the AD specifies otherwise. Table 1—All Material Incorporated by Reference Document Revision Date Boeing DC-8 Special Compliance Item Report, MDC-02K9030 A August 8, 2006. Boeing DC-8 Special Compliance Item Report, MDC-02K9030 B July 23, 2009. Boeing DC-8 Special Compliance Item Report, MDC-02K9030 C January 5, 2010. Boeing DC-8 Special Compliance Item Report, MDC-02K9030 D June 9, 2010. Boeing Service Bulletin DC8-28-090 Original October 9, 2009. Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision B, dated July 23, 2009, contains the following effective pages: List of Effective Pages Page title/description Page number(s) Revision number Date shown on Page(s) Report Title Page None shown B July 23, 2009. Index of Page Changes ii, iii B None shown.* Table of Contents iv, v B None shown.* Discussion 1 New None shown.* Appendix A A1-A4 New None shown.* Appendix B B1, B3, B4, B6-B12 New None shown.*   B2, B5, B13-B24 B None shown.* Appendix C C1-C5 New None shown.*   C6-C10 B None shown.* Appendix D D1 New None shown.* Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision C, dated January 5, 2010, contains the following effective pages: List of Effective Pages Page title/description Page number(s) Revision number Date shown on page(s) Report Title Page None shown C January 5, 2010. Index of Page Changes ii, iii C None shown.* Table of Contents iv, v C None shown.* Discussion 1 C None shown.* Appendix A A1-A3 New None shown.*   A4-A25 C None shown.* Appendix B B1, B3, B4, B6-B12 New None shown.*   B2, B5, B13-B24 B None shown.* Appendix C C1-C5 New None shown.*   C6-C10 B None shown.*   C11-C14 C None shown.* Appendix D D1 New None shown.* Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision D, dated June 9, 2010, contains the following effective pages: List of Effective Pages Page title/description Page number(s) Revision number Date shown on page(s) Report Title Page None shown D June 9, 2010. Attachment A None shown None shown June 22, 2010. Index of Page Changes ii B None shown.*   iii C None shown.* Table of Contents iv, v C None shown.* Discussion 1 C None shown.* Appendix A A1-A3 New None shown.*   A4-A25 C None shown.* Appendix B B1, B3, B6, B7, B9, B12 New None shown.*   B2, B13-B24 B None shown.*   B4, B5, B8, B10, B11 D None shown.* Appendix C C1-C5 New None shown.*   C6-C10 B None shown.*   C11-C14 C None shown.* Appendix D D1 New None shown.* (* The revision date of these documents is shown only on the title page of these documents.) (1) The Director of the Federal Register approved the incorporation by reference of the service information contained in Table 2 of this AD under 5 U.S.C. 552(a) and 1 CFR part 51. Table 2—New Material Incorporated By Reference Document Revision Date Boeing DC-8 Special Compliance Item Report, MDC-02K9030 B July 23, 2009. Boeing DC-8 Special Compliance Item Report, MDC-02K9030 C January 5, 2010. Boeing DC-8 Special Compliance Item Report, MDC-02K9030 D June 9, 2010. Boeing Service Bulletin DC8-28-090 Original October 9, 2009. (2) The Director of the Federal Register previously approved the incorporation by reference of Boeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision A, dated August 8, 2006, on May 27, 2008 (73 FR 21523, April 22, 2008). (3) 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 dse.boecom@boeing.com; Internet https://www.myboeingfleet.com. (4) 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. (5) 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 September 23, 2010. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010-25021 Filed 10-6-10; 8:45 am] BILLING CODE 4910-13-P

This AD results from a design review of the fuel tank systems. The Federal Aviation Administration is issuing this AD to prevent the potential for ignition sources inside fuel tanks caused by latent failures, alterations, repairs, or maintenance actions, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.