AD 2010-21-03

The FAA is superseding an existing airworthiness directive (AD) that applies to all of the McDonnell Douglas Corporation airplanes identified above. The existing AD currently requires revising the maintenance program to incorporate new airworthiness limitations for fuel tank systems to satisfy Special Federal Aviation Regulation No. 88 requirements. This new AD adds requirements to revise the maintenance program to incorporate specific Critical Design Configuration Control Limitations (CDCCL) information and install fuel tank float switch in- line fuses. This new AD also adds two Airworthiness Limitations inspections (ALIs). This AD results from a design review of the fuel tank systems. We are 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.

Final rule.

2010-21-03 McDonnell Douglas Corporation: Amendment 39-16463. Docket No. FAA-2010-0639; Directorate Identifier 2009-NM-232-AD. \n\nEffective Date \n\n\t(a) This AD becomes effective November 12, 2010. \n\nAffected ADs \n\n\t(b) This AD supersedes AD 2008-09-04, Amendment 39-15484. \n\nApplicability \n\n\t(c) 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. \n\n\tNote 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 inthe 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. \n\nSubject \n\n\t(d) Air Transport Association (ATA) of America Code 28: Fuel. \n\nUnsafe Condition \n\n\t(e) 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. \n\nCompliance \n\n\t(f) You are responsible for havingthe actions required by this AD performed within the compliance times specified, unless the actions have already been done. \n\nRestatement of Requirements of AD 2008-09-04, With Revised Compliance Method \n\nRevise the Maintenance Program \n\n\t(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. \n\nNo Reporting Requirement \n\n\t(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. \n\nNo Alternative Inspections, Inspection Intervals, or Critical Design Configuration Control Limitations (CDCCLs) \n\n\t(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. \n\nNew Requirements of This AD \n\nRevise the Maintenance Program \n\n\t(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. \n\n\t(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. \n\n\t(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. \n\n\t(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. \n\nInstall the In-Line Fuses \n\n\t(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. \n\nNo Alternative Inspections, Inspection Intervals, or Critical Design Configuration Control Limitations (CDCCLs) \n\n\t(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. \n\n\t(m) Revising the maintenance program to incorporate the information specified in Appendixes B, C, and D ofthe 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. \n\nNo Reporting Requirement \n\n\t(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. \n\nAlternative Methods of Compliance (AMOCs) \n\n\t(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. \n\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\nMaterial Incorporated by Reference \n\n\t(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. \n\n\t\t\tTable 1--All Material Incorporated by Reference\n\n\nDocument\nRevision\nDate\nBoeing DC-8 Special Compliance Item Report, MDC-02K9030\nA\nAugust 8, 2006\nBoeing DC-8 Special Compliance Item Report, MDC-02K9030\nB\nJuly 23, 2009\nBoeing DC-8 Special Compliance Item Report, MDC-02K9030\nC \nJanuary 5, 2010\nBoeing DC-8 Special Compliance Item Report, MDC-02K9030\nD\nJune 9, 2010\nBoeing Service Bulletin DC8-28-090\nOriginal\nOctober 9, 2009\n\n\tBoeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision B, dated July 23, 2009, contains the following effective pages: \n\n\t\t\t\t\tList of Effective Pages\n\n\nPage Title/Description\nPage Number(s)\nRevision Number\nDate Shown on Page(s)\nReport Title Page\nNone shown\nB\nJuly 23, 2009\nIndex of Page Changes\nii, iii\nB\nNone shown*\nTable of Contents\niv, v\nB\nNone shown*\nDiscussion\n1\nNew\nNone shown*\nAppendix A\nA1-A4\nNew\nNone shown*\n\nB1, B3, B4, B6-B12\nNew\nNone shown*\nAppendix B\nB2, B5, B13-B24\nB\nNone shown*\n\nC1-C5\nNew\nNone shown*\nAppendix C\nC6-C10\nB\nNone shown*\nAppendix D\nD1\nNew\nNone shown*\n\n\tBoeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision C, dated January 5, 2010, contains the following effective pages: \n\n\t\t\t\tList of Effective Pages\n\n\nPage Title/Description\nPage Number(s)\nRevision Number\nDate Shown on Page(s)\nReport Title Page\nNone shown\nC\nJanuary 5, 2010\nIndex of Page Changes\nii, iii\nC\nNone shown*\nTable of Contents\niv, v\nC\nNone shown*\nDiscussion\n1\nC\nNone shown*\n\nA1-A3\nNew\nNone shown*\nAppendix A\nA4-A25\nC\nNone shown*\n\nB1, B3, B4, B6-B12\nNew\nNone shown*\nAppendix B\nB2, B5, B13-B24\nB\nNone shown*\n\nC1-C5\nNew\nNone shown*\n\nC6-C10\nB\nNone shown*\nAppendix C\nC11-C14\nC\nNone shown*\nAppendix D\nD1\nNew\nNone shown*\n\n\tBoeing DC-8 Special Compliance Item Report, MDC-02K9030, Revision D, dated June 9, 2010, contains the following effective pages: \n\n\t\t\t\t\tList of Effective Pages\n \n\nPage Title/Description\nPage Number(s)\nRevision Number\nDate Shown on Page(s)\nReport Title Page\nNone shown\nD\nJune 9, 2010\nAttachment A\nNone shown\nNone shown\nJune 22, 2010\n\nii \nB\nNone shown*\nIndex of Page Changes\niii\nC\nNone shown*\nTable of Contents\niv, v\nC\nNone shown*\nDiscussion\n1\nC\nNone shown*\n\nA1-A3\nNew\nNone shown*Appendix A\nA4-A25\nC\nNone shown*\n\nB1, B3, B6, B7, B9, B12\nNew\nNone shown*\n\nB2, B13-B24\nB\nNone shown*\nAppendix B\nB4, B5, B8, B10, B11\nD\nNone shown*\n\nC1-C5\nNew\nNone shown*\n\nC6-C10\nB\nNone shown*\nAppendix C\nC11-C14\nC\nNone shown*\nAppendix D\nD1\nNew\nNone shown*\n\t(* The revision date of these documents is shown only on the title page of these documents.) \n\n\t(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. \n\n\tTable 2--New Material Incorporated By Reference\n\n\nDocument\nRevision\nDate\nBoeing DC-8 Special Compliance Item Report, MDC-02K9030\nB\nJuly 23, 2009\nBoeing DC-8 Special Compliance Item Report, MDC-02K9030\nC \nJanuary 5, 2010\nBoeing DC-8 Special Compliance Item Report, MDC-02K9030\nD\nJune 9, 2010\nBoeing Service Bulletin DC8-28-090\nOriginal\nOctober 9, 2009\n\n\t(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). \n\n\t(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. \n\n\t(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. \n\n\t(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.

Discussion \n\n\tThe FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that supersedes AD 2008-09-04, Amendment 39-15484 (73 FR 21523, April 22, 2008). The existing AD applies to all 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. That NPRM was published in the Federal Register on June 25, 2010 (75 FR 36298). That NPRM proposed to continue to require revising the maintenance program. That NPRM also proposed to add requirements to revise the maintenance program to incorporate specific Critical Design Configuration Control Limitations (CDCCL) information and install fuel tank float switch in-line fuses. That NPRM also proposed to add two Airworthiness Limitations inspections (ALIs). \n\nRelevant Service Information \n\n\tWe reviewed Boeing DC-8 Special Compliance Item Report, MDC- 02K9030, Revision D, dated June 9, 2010. This service information does not add any additional work. We have revised paragraphs (j), (m), and (n) of this AD to refer to this report. \n\nComments \n\n\tWe provided the public the opportunity to participate in the development of this AD. No comments have been received on the NPRM or on the determination of the cost to the public. \n\nChange to Paragraph Reference \n\n\tWe revised paragraph (l) of this AD to correct a typographical error that appeared in the NPRM. In paragraph (l) of the NPRM, we inadvertently referred to "paragraph (k)'' instead of "paragraph (j)'' of the AD. Paragraph (l) of this final rule correctly references paragraph (j) of this AD. \n\nExplanation of Additional Change to NPRM \n\n\tWe also clarified the airplanes affected by paragraph (k) of this AD by referring to the airplanes identified in Boeing Service Bulletin DC8-28-090, dated October 9, 2009. Airplanes not listed in the effectivity of Boeing Service Bulletin DC8-28-090, dated October 9, 2009, are not required to do the installation required by paragraph (k) of this AD. \n\nConclusion \n\n\tWe have carefully reviewed the available data and determined that air safety and the public interest require adopting the AD with the changes mentioned previously. \n\nCosts of Compliance \n\n\tThere are about 125 airplanes of the affected design in the worldwide fleet. The following table provides the estimated costs for U.S. operators to comply with this AD. \n\n\t\t\t\t\tEstimated Costs\n\n\nAction\nWork hours\nAverage labor rate per hour\nParts\nCost per airplane\nNumber of U.S.-registered airplanes\nFleet cost\nRevising the Maintenance Program (required by AD 2008-09-04)\n1\n$85\n$0\n$85\n125\n$10,625\nRevising the Airworthiness Limitation Section (new action)\n1\n$85\n$0\n$85\n125\n$10,625\nInstalling fuses (new action)\nUp to 35 hours\n$85\n$0\nUp to $2,975\n125\nUp to $371,875\n\nAuthority for This Rulemaking \n\n\tTitle 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency's authority. \n\n\tWe are issuing this rulemaking under the authority described in subtitle VII, part A, subpart III, section 44701, "General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. \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 and placed it in the AD docket. 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 Federal Aviation Administration (FAA) amends Sec. 39.13 by removing Amendment 39-15484 (73 FR 21523, April 22, 2008) and by adding the following new airworthiness directive (AD):