Airworthiness Directives; The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP Series Airplanes, 37997-38001 [2010-15651]

Download as PDF 37997 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations Accomplishment Instructions of the applicable service bulletin listed in Table 1 of this AD. Note 2: The part numbers in parentheses in paragraphs (g)(2)(i), (g)(2)(ii), (g)(2)(iii), and (g)(3) of this AD, are equivalent specification part numbers, as specified in the applicable service bulletin listed in Table 1 of this AD. (4) Replacement of an accumulator with a new accumulator having the same part number is also acceptable for compliance with the requirements of paragraph (g)(2) of this AD, if done before the effective date of this AD in accordance with the applicable service bulletin listed in Table 2 of this AD. TABLE 2—PREVIOUS SERVICE BULLETINS Bombardier service bulletin— Airplane model— CL–600–1A11 CL–600–1A11 CL–600–2A12 CL–600–2A12 CL–600–2B16 CL–600–2B16 CL–600–2B16 CL–600–2B16 (CL–600) .................................................................................................. (CL–600) .................................................................................................. (CL–601), CL–600–2B16 (CL–601–3A, CL–601–3R variant) ................ (CL–601), CL–600–2B16 (CL–601–3A, CL–601–3R variant) ................ (CL–604 variant) ...................................................................................... (CL–604 variant) ...................................................................................... (CL–605) .................................................................................................. (CL–605) .................................................................................................. 600–0742 600–0742 601–0597 601–0597 604–29–008 604–29–008 605–29–001 605–29–001 FAA AD Differences Related Information Note 3: This AD differs from the MCAI and/or service information as follows: (1) The MCAI specifies that certain airplanes do not need to be inspected for the part number; however, this AD requires that inspections be done on all airplanes to determine the part number. (2) The MCAI specifies to record the number of flight cycles accumulated on each affected part. This AD does not require that operators record the number of flight cycles. (i) Refer to MCAI Canadian Airworthiness Directive CF–2009–39, dated October 27, 2009, and the service bulletins listed in Table 1 of this AD, for related information. WReier-Aviles on DSKGBLS3C1PROD with RULES Other FAA AD Provisions (h) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (ACO), ANE–170, 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: Program Manager, Continuing Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York, 11590; telephone 516–228–7300; fax 516– 794–5531. 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. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. (3) Reporting Requirements: For any reporting requirement in this AD, under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120–0056. VerDate Mar<15>2010 15:16 Jun 30, 2010 Jkt 220001 (j) You must use the service information contained in Table 3 of this AD, as applicable, 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. (2) For service information identified in ˆ this AD, contact Bombardier, Inc., 400 Cote ´ Vertu Road West, Dorval, Quebec H4S 1Y9, Canada; telephone 514–855–5000; fax 514– 855–7401; e-mail thd.crj@aero.bombardier.com; Internet https:// www.bombardier.com. (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: https://www.archives.gov/federal_register/ code_of_federal_regulations/ ibr_locations.html. TABLE 3—MATERIAL INCORPORATED BY REFERENCE Revision— 600–0742 ........ 601–0597 ........ 604–29–008 .... 605–29–001 .... PO 00000 Frm 00023 Fmt 4700 02 02 02 02 Dated— May May May May Sfmt 4700 Original ......... 01 ................. Original ......... 01 ................. Original ......... 01 ................. Original ......... 01 ................. Dated— November 10, July 6, 2009. November 10, July 6, 2009. November 10, July 6, 2009. November 10, July 6, 2009. 2008. 2008. 2008. 2008. Issued in Renton, Washington, on June 17, 2010. Robert D. Breneman, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010–15845 Filed 6–30–10; 8:45 am] Material Incorporated by Reference Bombardier service bulletin— Revision— 10, 10, 10, 10, 2010. 2010. 2010. 2010. BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2009–0906; Directorate Identifier 2009–NM–075–AD; Amendment 39–16343; AD 2010–13–12] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Model 747–100, 747–100B, 747–100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747–400, 747– 400D, 747–400F, 747SR, and 747SP Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Model 747 series airplanes. This AD requires replacing the power control relays for the main tank fuel boost pumps and jettison pumps, and the center tank scavenge pump, as applicable, with new relays having a ground fault interrupt (GFI) feature. This AD also requires revising the maintenance program to incorporate Airworthiness Limitations (AWLs) 28– AWL–23 (for Model 747–100, 747– 100B, 747–100B SUD, 747–200B, 747– 200C, 747–200F, 747–300, 747SP, and 747SR series airplanes), and AWLs 28– AWL–28 and 28–AWL–29 (for Model 747–400, 747–400D, and 747–400F E:\FR\FM\01JYR1.SGM 01JYR1 37998 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations series airplanes). This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent damage to the fuel pumps caused by electrical arcing that could introduce an ignition source in the fuel tank, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane. DATES: This AD is effective August 5, 2010. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of August 5, 2010. ADDRESSES: For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC 2H–65, Seattle, Washington 98124– 2207; telephone 206–544–5000, extension 1; fax 206–766–5680; e-mail me.boecom@boeing.com; Internet https://www.myboeingfleet.com. WReier-Aviles on DSKGBLS3C1PROD with RULES Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The address for the Docket Office (telephone 800–647–5527) is the Document Management Facility, U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Georgios Roussos, Aerospace Engineer, Systems and Equipment Branch, ANM– 130S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057–3356; telephone (425) 917–6482; fax (425) 917–6590. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an airworthiness directive (AD) that would apply to certain Model 747 series airplanes. That NPRM was published in the Federal Register on October 13, 2009 (74 FR 52431). That NPRM proposed to require replacing the power control relays for the main tank fuel boost pumps and jettison pumps, and the center tank scavenge pump, as applicable, with new relays having a ground fault interrupt (GFI) feature. That NPRM also proposed to require revising the maintenance VerDate Mar<15>2010 15:16 Jun 30, 2010 Jkt 220001 program to incorporate Airworthiness Limitations (AWLs) 28–AWL–23 (for Model 747–100, 747–100B, 747–100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747SP, and 747SR series airplanes), and AWLs 28–AWL–28 and 28–AWL–29 (for Model 747–400, 747– 400D, and 747–400F series airplanes). Relevant Service Information For Model 747–400, 747–400D, and 747–400F series airplanes, we have reviewed Subsection D, ‘‘AIRWORTHINESS LIMITATIONS— FUEL SYSTEMS,’’ of Boeing 747–400 Maintenance Planning Data (MPD) Document, Document D621U400–9, Section 9, Revision December 2009. This document includes the same repetitive inspection (test) to verify continued functionality of the GFI relays as did Subsection D, ‘‘AIRWORTHINESS LIMITATIONS— FUEL SYSTEMS,’’ of Boeing 747–400 MPD Document, Document D621U400– 9, Section 9, Revision April 2008 (which we referred to in the NPRM as an appropriate source of service information for incorporation into the maintenance program). Revision December 2009 clarifies the effectivity for AWL 28–AWL–28. We have revised paragraph (h)(1) of this AD to refer to Subsection D, ‘‘AIRWORTHINESS LIMITATIONS—FUEL SYSTEMS,’’ of Boeing 747–400 MPD Document, Document D621U400–9, Section 9, Revision December 2009. We have also added a new paragraph (j) to this final rule to provide credit for operators who have revised their maintenance program using Revision April 2008, or Revision March 2009, of Subsection D, ‘‘AIRWORTHINESS LIMITATIONS— FUEL SYSTEMS,’’ of Boeing 747–400 MPD Document, Document D621U400– 9, Section 9. We have also reidentified subsequent paragraphs accordingly. Comments We gave the public the opportunity to participate in developing this AD. We considered all of the comments received from the commenters. Request To Extend Compliance Time Deutsche Lufthansa AG (Lufthansa) requests that we extend the proposed compliance time from 60 months to the intervals specified in the latest approved maintenance review board report (MRBR). Further, Lufthansa states that it would like to know how the proposed compliance time was determined. Lufthansa states that it assumes that the probability of a failure is part of the determination of the proposed compliance time of 60 months. However, Lufthansa further PO 00000 Frm 00024 Fmt 4700 Sfmt 4700 asserts that this compliance time is not in line with its heavy maintenance layover schedule, which is based on the latest approved MRBR. We do not agree to extend the compliance time. In developing an appropriate compliance time for this AD, we considered not only the safety implications, but the manufacturer’s recommendations, the availability of required parts, and the practical aspect of accomplishing the actions within an interval of time that corresponds to typical scheduled maintenance for affected operators. However, under the provisions of paragraph (k) of this AD, we will consider requests for approval of an extension of the compliance time if sufficient data are submitted to substantiate that the change would provide an acceptable level of safety. We have not changed the final rule in this regard. Request To Clarify if Boeing Alert Service Bulletin 747–28A2261 Terminates Requirements of Previous AD Japan Airlines (JAL) requests that we revise the NPRM to clarify whether accomplishing the actions specified in Boeing Alert Service Bulletin 747– 28A2261, dated February 19, 2009, terminates the requirements of AD 97– 26–07, Amendment 39–10250 (62 FR 65352, December 12, 1997). JAL states that AD 97–26–07 presently requires repetitive inspections of the Number 1 and Number 4 main fuel tank boost pump wiring (which runs through the inboard fuel tanks) per Boeing Service Bulletin 747–28A2204. JAL asserts that the currently required inspection makes sure the wiring is not damaged. JAL also asserts that, after operators do the proposed modification, the GFI relays will monitor the electrical faults and remove the power from the fuel pump immediately to minimize the risk of ignition when wires become damaged. JAL states that clarifying the NPRM to identify Boeing Alert Service Bulletin 747–28A2261 as terminating action for AD 97–26–07 would save operators additional work. The FAA acknowledges that both AD 97–26–07 and this AD relate to potential electrical system faults in the fuel system. However, the FAA does not agree that this AD provides terminating action for the actions specified in AD 97–26–07. The Boeing GFI design addresses section 25.981(a)(3) of the Federal Aviation Regulations (14 CFR 25.981(a)(3)) single failure requirement only. However the probability of the GFI having a latent failure condition, which would prevent it from detecting a fault current and removing power from the E:\FR\FM\01JYR1.SGM 01JYR1 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations WReier-Aviles on DSKGBLS3C1PROD with RULES fuel pump, is not shown to be extremely remote. The GFI does not have the ability to verify that fault protection is operational prior to application of power to the pump. Potential latent failures in the GFI function will be detected via a manual BIT test, which will be performed by operators at minimum 4,000 flight-hour maintenance intervals. We have made no change to the AD in this regard. Request To Revise Description in the Relevant Service Information Section The Boeing Company (Boeing) requests that we revise the Relevant Service Information section of the NPRM to specify that the replacement given in Boeing Alert Service Bulletin 747–28A2261, dated February 19, 2009, ‘‘. . . also includes reworking certain wiring and doing an operational test of the main tank fuel boost pumps, the main tank jettison pumps (if applicable) and the center tank scavenge pump (if installed), and new relays.’’ Boeing states that the wording in the NPRM specifies conducting only the main tank boost pumps and relay operational tests, while Boeing Alert Service Bulletin 747–28A2261, dated February 19, 2009, specifies operational checks of the main tank fuel boost pumps, the main tank jettison pumps, and the center tank fuel scavenge pump, as well as tests of the GFI relays, following procedures for replacing the relays, and making relevant wiring changes. We partially agree with Boeing. For the reasons provided by Boeing, we do agree that the suggested wording changes to the description of Boeing Alert Service Bulletin 747–28A2261, dated February 19, 2009, are more accurate. However, we do not agree to revise this final rule in this regard. Normally, the Relevant Service Information section of the NPRM is not restated in the final rule, unless service information that was not described in the NPRM is being added in the final rule (e.g., new revisions of a document). In this case, the Relevant Service Information section does appear in this final rule to describe a new revision of an MPD document being added to this final rule. Although the Relevant Service Information section does appear in this final rule, the description of Boeing Alert Service Bulletin 747– 28A2261, dated February 19, 2009, is not restated in that section. We have made no change to the final rule in this regard. Request To Remove Proposed Requirement to Incorporate AWLs All Nippon Airways (ANA) requests that we revise the NPRM to remove VerDate Mar<15>2010 15:16 Jun 30, 2010 Jkt 220001 paragraph (h)(1), which proposed to require incorporating AWLs 28–AWL– 28 and 28–AWL–29 into the maintenance program. ANA asserts that paragraph (g)(3) of AD 2008–10–06, Amendment 39–15512 (73 FR 25990, May 8, 2008), already requires incorporation of AWLs 28–AWL–24 through 28–AWL–29. ANA believes that the proposed requirement is duplicating an existing requirement. We do not agree to remove paragraph (h)(1) of this AD. We acknowledge that paragraph (g)(3) of AD 2008–10–06 does specify revising the maintenance program to incorporate AWLs 28–AWL– 24 through 28–AWL–29—as an option. AD 2008–10–06 does not require incorporation of AWLs 28–AWL–24 through 28–AWL–29. Therefore, this AD does not duplicate a requirement and there is no reason to remove the requirement from this AD. However, we have revised paragraph (h)(1) of this AD to clarify that revising the maintenance program to include AWLs 28–AWL–28 and 28–AWL–29 in accordance with paragraph (g)(3) of AD 2008–10–06, Amendment 39–15512 (73 FR 25990, May 8, 2008) ; or AD 2008–10–06 R1, Amendment 39–16160 (75 FR 906, January 7, 2010); is acceptable for compliance with the corresponding requirements specified in paragraph (h)(1) of this AD. Request To Allow Later Revisions of Maintenance Planning Data (MPD) Document United Airlines states that it concurs with the contents of the NPRM, but requests that we revise paragraph (h)(1) of the NPRM to allow use of later revisions of Section 9 of the Boeing 747–400 MPD Document, Document D621U400–9, Revision April 2008. United Airlines did not provide justification for this request. We understand United Airlines’ request and operator’s desire to have some flexibility in AD compliance actions. However, we cannot allow use of later revisions of Section 9 of the Boeing 747–400 MPD Document, Document D621U400–9. We cannot use the phrase, ‘‘or later FAA-approved revisions,’’ in an AD when referring to the service document because doing so violates Office of the Federal Register (OFR) regulations for approval of materials ‘‘incorporated by reference’’ in rules. In general terms, we are required by these OFR regulations to either publish the service document contents as part of the actual AD language; or submit the service document to the OFR for approval as ‘‘referenced’’ material, in which case we may only refer to such PO 00000 Frm 00025 Fmt 4700 Sfmt 4700 37999 material in the text of an AD. The AD may refer to the service document only if the OFR approved it for ‘‘incorporation by reference.’’ To allow operators to use later revisions of the referenced document (issued after publication of the AD), either we must revise the AD to reference specific later revisions, or operators must request approval to use later revisions as an alternative method of compliance with this AD under the provisions of paragraph (k) of this AD. However, as explained previously, we have revised this final rule to refer to Subsection D, ‘‘AIRWORTHINESS LIMITATIONS— FUEL SYSTEMS,’’ of Boeing 747–400 MPD Document, Document D621U400– 9, Section 9, Revision December 2009. Explanation of Additional Changes Made to this AD We have revised paragraph (h)(2) of this AD to clarify that revising the maintenance program to include AWL 28–AWL–23 in accordance with paragraph (g) of AD 2008–10–07, Amendment 39–15513 (73 FR 25977, May 8, 2008); or AD 2008–10–07 R1, Amendment 39–16070 (74 FR 56098, October 30, 2009); is acceptable for compliance with the corresponding requirements specified in paragraph (h)(2) of this AD. We have revised this AD to identify the legal name of the manufacturer as published in the most recent type certificate data sheet for the affected airplane models. Conclusion We reviewed the relevant data, considered the comments received, and determined that air safety and the public interest require adopting the AD with the changes described previously. We also determined that these changes will not increase the economic burden on any operator or increase the scope of the AD. Explanation of Change to Costs of Compliance Since issuance of the NPRM, we have increased the labor rate used in the Costs of Compliance from $80 per workhour to $85 per work-hour. The Costs of Compliance information, below, reflects this increase in the specified hourly labor rate. Costs of Compliance We estimate that this proposed AD would affect 258 airplanes of U.S. registry. The following table provides the estimated costs for U.S. operators to comply with this AD. E:\FR\FM\01JYR1.SGM 01JYR1 38000 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations TABLE—ESTIMATED COSTS Action Work hours Average labor rate per hour Replacement ............. 1 10 to 14 ....... $85 Revision of Airworthiness Limitations section. 1 ..................... 85 1 Depending Parts 1 $16,800 Cost per product to $36,200 None ........................ to $37,390 258 85 ............................. 258 Adoption of the Amendment Title 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. We 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. ■ Regulatory Findings Affected ADs (b) None. 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. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), and (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. You can find our regulatory evaluation and the estimated costs of compliance in the AD Docket. Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: ■ 2010–13–12 The Boeing Company: Amendment 39–16343. Docket No. FAA–2009–0906; Directorate Identifier 2009–NM–075–AD. Effective Date (a) This airworthiness directive (AD) is effective August 5, 2010. Applicability (c) This AD applies to The Boeing Company Model 747–100, 747–100B, 747– 100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747–400, 747–400D, 747–400F, 747SR, and 747SP series airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin 747–28A2261, dated February 19, 2009. List of Subjects in 14 CFR Part 39 Note 1: This AD requires a revision to a certain operator maintenance document to include new inspections. Compliance with these inspections is required by 14 CFR 43.16 and 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by these limitations, the operator may not be able to accomplish the actions described in the revisions. In this situation, to comply with 14 CFR 43.16 and 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (k) 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. Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Subject (d) Air Transport Association (ATA) of America Code 28: Fuel. VerDate Mar<15>2010 Fleet cost 1 $4,553,700 to $9,646,620. $21,930. on airplane configuration. Authority for this Rulemaking WReier-Aviles on DSKGBLS3C1PROD with RULES 1 $17,650 Number of U.S.-registered airplanes 15:16 Jun 30, 2010 Jkt 220001 PO 00000 Frm 00026 Fmt 4700 Sfmt 4700 Unsafe Condition (e) This AD results from fuel system reviews conducted by the manufacturer. The Federal Aviation Administration is issuing this AD to prevent damage to the fuel pumps caused by electrical arcing that could introduce an ignition source in the fuel tank which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane. Compliance (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. Replacement (g) Within 60 months after the effective date of this AD: Replace the power control relays for the main tank fuel boost pumps and jettison pumps, and the center tank scavenge pump, as applicable, with new relays having a ground fault interrupt feature, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 747–28A2261, dated February 19, 2009. Maintenance Program Revision (h) Concurrently with the actions required by paragraph (g) of this AD: Revise the maintenance program by incorporating the applicable information in paragraphs (h)(1) and (h)(2) of this AD. The inspection interval for airworthiness limitations (AWLs) 28– AWL–23, 28–AWL–28, and 28–AWL–29 starts on the date the replacement required by paragraph (g) of this AD is done. (1) For Model 747–400, 747–400D, and 747–400F series airplanes: Incorporate new airworthiness limitations 28–AWL–28 and 28–AWL–29 of Subsection D, ‘‘AIRWORTHINESS LIMITATIONS—FUEL SYSTEMS,’’ of Boeing 747–400 Maintenance Planning Data (MPD) Document, Document D621U400–9, Section 9, Revision December 2009. (These AWLs were first introduced in Revision October 2007 of the MPD document.) Incorporating AWLs 28–AWL–28 and 28–AWL–29 in accordance with paragraph (g)(3) of AD 2008–10–06, Amendment 39–15512; or AD 2008–10–06 R1, Amendment 39–16160; is acceptable for compliance with the corresponding requirements specified in this paragraph. (2) For Model 747–100, 747–100B, 747– 100B SUD, 747–200B, 747–200C, 747–200F, 747–300, 747SP, and 747SR series airplanes: Incorporate new AWL 28–AWL–23 of Subsection D, ‘‘AIRWORTHINESS LIMITATIONS—SYSTEMS,’’ of Boeing 747– 100/200/300/SP Airworthiness Limitations E:\FR\FM\01JYR1.SGM 01JYR1 38001 Federal Register / Vol. 75, No. 126 / Thursday, July 1, 2010 / Rules and Regulations (AWLs) and Certification Maintenance Requirements (CMRs), Document D6–13747– CMR, Revision March 2008. (This AWL was first introduced in Revision September 2007 of the AWLs/CMRs document.) Incorporating AWL 28–AWL–23 in accordance with paragraph (g) of AD 2008–10–07, Amendment 39–15513; or AD 2008–10–07 R1, Amendment 39–16070; is acceptable for compliance with the corresponding requirements specified in this paragraph. Credit for Actions Done Using Previous Service Information (j) Incorporating new AWLs 28–AWL–28 and 28–AWL–29 of Subsection D, ‘‘AIRWORTHINESS LIMITATIONS—FUEL SYSTEMS,’’ of Boeing 747–400 Maintenance Planning Data (MPD) Document, Document D621U400–9, Section 9, Revision April 2008; or Revision March 2009; before the effective date of this AD is acceptable for compliance with the requirements of paragraph (h)(1) of this AD. No Alternative Inspection or Inspection Intervals Alternative Methods of Compliance (AMOCs) (k)(1) The Manager, Seattle 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: Georgios Roussos, Aerospace Engineer, Systems and Equipment Branch, ANM–130S, FAA, Seattle Aircraft Certification Office, (i) After accomplishing the actions required by paragraph (h) of this AD, no alternative inspections or inspection intervals may be used, unless the inspections or intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k) of this AD. 1601 Lind Avenue SW., Renton, Washington 98057–3356; telephone (425) 917–6482; fax (425) 917–6590. Information may be e-mailed to 9-ANM-Seattle-ACO-AMOCRequests@faa.gov. (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 (l) You must use the service information contained in Table 1 of this AD to do the actions required by this AD, as applicable, unless the AD specifies otherwise. TABLE 1—MATERIAL INCORPORATED BY REFERENCE Revision Boeing Alert Service Bulletin 747-28A2261 .................................................................................. Subsection D, ‘‘AIRWORTHINESS LIMITATIONS—SYSTEMS,’’ of Boeing 747-100/200/300/ SP Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), Document D6-13747–CMR. Subsection D, ‘‘AIRWORTHINESS LIMITATIONS—FUEL SYSTEMS,’’ of Section 9 of the Boeing 747-400 Maintenance Planning Data (MPD) Document, Document D621U400–9. WReier-Aviles on DSKGBLS3C1PROD with RULES Document Original ....................... March 2008 ................. February 19, 2009 March 2008 December 2009 .......... December 2009 (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. (2) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC 2H–65, Seattle, Washington 98124–2207; telephone 206–544–5000, extension 1; fax 206–766– 5680; e-mail me.boecom@boeing.com; Internet https://www.myboeingfleet.com. (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: https://www.archives.gov/federal_register/ code_of_federal_regulations/ibr_ locations.html. Issued in Renton, Washington, on June 10, 2010. Jeffrey E. Duven, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010–15651 Filed 6–30–10; 8:45 am] BILLING CODE 4910–13–P VerDate Mar<15>2010 15:16 Jun 30, 2010 Jkt 220001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–0981; Directorate Identifier 2008–NM–073–AD; Amendment 39–16352; AD 2010–14–07] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Model 747 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: The FAA is superseding an existing airworthiness directive (AD), which applies to certain Model 747 airplanes. That AD currently requires repetitive inspections of the body station (BS) 2598 bulkhead, and corrective actions if necessary. That AD also currently requires a terminating modification for certain repetitive inspections and a post-modification inspection of the modified area. This new AD continues to require those actions using revised service information. For certain airplanes, this AD requires new repetitive inspections, an interim modification, and postinterim modification inspections. For certain airplanes, this AD requires PO 00000 Frm 00027 Fmt 4700 Sfmt 4700 Date replacing any previously repaired aft inner chord and reinstalling the terminating modification. For airplanes that are converted to the Model 747–400 large cargo freighter (LCF) configuration, this new AD reduces the threshold and repeat intervals of certain postmodification inspections. For all airplanes, this new AD also requires certain inspections of the upper aft outer chords and diagonal brace attachment fittings, flanges, and rods to continue after the terminating modification. This AD results from reports of cracked aft inner chords on airplanes after certain requirements of the existing AD were done. We are issuing this AD to prevent fatigue cracking of the BS 2598 bulkhead structure, which could result in inability of the structure to carry horizontal stabilizer flight loads, and loss of controllability of the airplane. DATES: This AD becomes effective August 5, 2010. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of August 5, 2010. On April 13, 2006 (71 FR 12125, March 9, 2006), the Director of the Federal Register approved the incorporation by reference of certain other publications listed in the AD. E:\FR\FM\01JYR1.SGM 01JYR1

Agencies

[Federal Register Volume 75, Number 126 (Thursday, July 1, 2010)]
[Rules and Regulations]
[Pages 37997-38001]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-15651]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-0906; Directorate Identifier 2009-NM-075-AD; 
Amendment 39-16343; AD 2010-13-12]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Model 747-100, 747-
100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 
747-400D, 747-400F, 747SR, and 747SP Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Model 747 series airplanes. This AD requires replacing the power 
control relays for the main tank fuel boost pumps and jettison pumps, 
and the center tank scavenge pump, as applicable, with new relays 
having a ground fault interrupt (GFI) feature. This AD also requires 
revising the maintenance program to incorporate Airworthiness 
Limitations (AWLs) 28-AWL-23 (for Model 747-100, 747-100B, 747-100B 
SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SP, and 747SR series 
airplanes), and AWLs 28-AWL-28 and 28-AWL-29 (for Model 747-400, 747-
400D, and 747-400F

[[Page 37998]]

series airplanes). This AD results from fuel system reviews conducted 
by the manufacturer. We are issuing this AD to prevent damage to the 
fuel pumps caused by electrical arcing that could introduce an ignition 
source in the fuel tank, which, in combination with flammable fuel 
vapors, could result in a fuel tank explosion and consequent loss of 
the airplane.

DATES: This AD is effective August 5, 2010.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of August 5, 
2010.

ADDRESSES: For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, P. 
O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 206-
544-5000, extension 1; fax 206-766-5680; e-mail me.boecom@boeing.com; 
Internet  https://www.myboeingfleet.com.

Examining the AD Docket

    You may examine the AD docket on the Internet at https://www.regulations.gov; or in person at the Docket Management Facility 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains this AD, the regulatory evaluation, 
any comments received, and other information. The address for the 
Docket Office (telephone 800-647-5527) is the Document Management 
Facility, U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Georgios Roussos, Aerospace Engineer, 
Systems and Equipment Branch, ANM-130S, FAA, Seattle Aircraft 
Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057-
3356; telephone (425) 917-6482; fax (425) 917-6590.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an airworthiness directive (AD) that would apply to 
certain Model 747 series airplanes. That NPRM was published in the 
Federal Register on October 13, 2009 (74 FR 52431). That NPRM proposed 
to require replacing the power control relays for the main tank fuel 
boost pumps and jettison pumps, and the center tank scavenge pump, as 
applicable, with new relays having a ground fault interrupt (GFI) 
feature. That NPRM also proposed to require revising the maintenance 
program to incorporate Airworthiness Limitations (AWLs) 28-AWL-23 (for 
Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 
747-300, 747SP, and 747SR series airplanes), and AWLs 28-AWL-28 and 28-
AWL-29 (for Model 747-400, 747-400D, and 747-400F series airplanes).

Relevant Service Information

    For Model 747-400, 747-400D, and 747-400F series airplanes, we have 
reviewed Subsection D, ``AIRWORTHINESS LIMITATIONS--FUEL SYSTEMS,'' of 
Boeing 747-400 Maintenance Planning Data (MPD) Document, Document 
D621U400-9, Section 9, Revision December 2009. This document includes 
the same repetitive inspection (test) to verify continued functionality 
of the GFI relays as did Subsection D, ``AIRWORTHINESS LIMITATIONS--
FUEL SYSTEMS,'' of Boeing 747-400 MPD Document, Document D621U400-9, 
Section 9, Revision April 2008 (which we referred to in the NPRM as an 
appropriate source of service information for incorporation into the 
maintenance program). Revision December 2009 clarifies the effectivity 
for AWL 28-AWL-28. We have revised paragraph (h)(1) of this AD to refer 
to Subsection D, ``AIRWORTHINESS LIMITATIONS--FUEL SYSTEMS,'' of Boeing 
747-400 MPD Document, Document D621U400-9, Section 9, Revision December 
2009. We have also added a new paragraph (j) to this final rule to 
provide credit for operators who have revised their maintenance program 
using Revision April 2008, or Revision March 2009, of Subsection D, 
``AIRWORTHINESS LIMITATIONS--FUEL SYSTEMS,'' of Boeing 747-400 MPD 
Document, Document D621U400-9, Section 9. We have also reidentified 
subsequent paragraphs accordingly.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We considered all of the comments received from the 
commenters.

Request To Extend Compliance Time

    Deutsche Lufthansa AG (Lufthansa) requests that we extend the 
proposed compliance time from 60 months to the intervals specified in 
the latest approved maintenance review board report (MRBR). Further, 
Lufthansa states that it would like to know how the proposed compliance 
time was determined. Lufthansa states that it assumes that the 
probability of a failure is part of the determination of the proposed 
compliance time of 60 months. However, Lufthansa further asserts that 
this compliance time is not in line with its heavy maintenance layover 
schedule, which is based on the latest approved MRBR.
    We do not agree to extend the compliance time. In developing an 
appropriate compliance time for this AD, we considered not only the 
safety implications, but the manufacturer's recommendations, the 
availability of required parts, and the practical aspect of 
accomplishing the actions within an interval of time that corresponds 
to typical scheduled maintenance for affected operators. However, under 
the provisions of paragraph (k) of this AD, we will consider requests 
for approval of an extension of the compliance time if sufficient data 
are submitted to substantiate that the change would provide an 
acceptable level of safety. We have not changed the final rule in this 
regard.

Request To Clarify if Boeing Alert Service Bulletin 747-28A2261 
Terminates Requirements of Previous AD

    Japan Airlines (JAL) requests that we revise the NPRM to clarify 
whether accomplishing the actions specified in Boeing Alert Service 
Bulletin 747-28A2261, dated February 19, 2009, terminates the 
requirements of AD 97-26-07, Amendment 39-10250 (62 FR 65352, December 
12, 1997). JAL states that AD 97-26-07 presently requires repetitive 
inspections of the Number 1 and Number 4 main fuel tank boost pump 
wiring (which runs through the inboard fuel tanks) per Boeing Service 
Bulletin 747-28A2204. JAL asserts that the currently required 
inspection makes sure the wiring is not damaged. JAL also asserts that, 
after operators do the proposed modification, the GFI relays will 
monitor the electrical faults and remove the power from the fuel pump 
immediately to minimize the risk of ignition when wires become damaged. 
JAL states that clarifying the NPRM to identify Boeing Alert Service 
Bulletin 747-28A2261 as terminating action for AD 97-26-07 would save 
operators additional work.
    The FAA acknowledges that both AD 97-26-07 and this AD relate to 
potential electrical system faults in the fuel system. However, the FAA 
does not agree that this AD provides terminating action for the actions 
specified in AD 97-26-07. The Boeing GFI design addresses section 
25.981(a)(3) of the Federal Aviation Regulations (14 CFR 25.981(a)(3)) 
single failure requirement only. However the probability of the GFI 
having a latent failure condition, which would prevent it from 
detecting a fault current and removing power from the

[[Page 37999]]

fuel pump, is not shown to be extremely remote. The GFI does not have 
the ability to verify that fault protection is operational prior to 
application of power to the pump. Potential latent failures in the GFI 
function will be detected via a manual BIT test, which will be 
performed by operators at minimum 4,000 flight-hour maintenance 
intervals. We have made no change to the AD in this regard.

Request To Revise Description in the Relevant Service Information 
Section

    The Boeing Company (Boeing) requests that we revise the Relevant 
Service Information section of the NPRM to specify that the replacement 
given in Boeing Alert Service Bulletin 747-28A2261, dated February 19, 
2009, ``. . . also includes reworking certain wiring and doing an 
operational test of the main tank fuel boost pumps, the main tank 
jettison pumps (if applicable) and the center tank scavenge pump (if 
installed), and new relays.'' Boeing states that the wording in the 
NPRM specifies conducting only the main tank boost pumps and relay 
operational tests, while Boeing Alert Service Bulletin 747-28A2261, 
dated February 19, 2009, specifies operational checks of the main tank 
fuel boost pumps, the main tank jettison pumps, and the center tank 
fuel scavenge pump, as well as tests of the GFI relays, following 
procedures for replacing the relays, and making relevant wiring 
changes.
    We partially agree with Boeing. For the reasons provided by Boeing, 
we do agree that the suggested wording changes to the description of 
Boeing Alert Service Bulletin 747-28A2261, dated February 19, 2009, are 
more accurate. However, we do not agree to revise this final rule in 
this regard. Normally, the Relevant Service Information section of the 
NPRM is not restated in the final rule, unless service information that 
was not described in the NPRM is being added in the final rule (e.g., 
new revisions of a document). In this case, the Relevant Service 
Information section does appear in this final rule to describe a new 
revision of an MPD document being added to this final rule. Although 
the Relevant Service Information section does appear in this final 
rule, the description of Boeing Alert Service Bulletin 747-28A2261, 
dated February 19, 2009, is not restated in that section. We have made 
no change to the final rule in this regard.

Request To Remove Proposed Requirement to Incorporate AWLs

    All Nippon Airways (ANA) requests that we revise the NPRM to remove 
paragraph (h)(1), which proposed to require incorporating AWLs 28-AWL-
28 and 28-AWL-29 into the maintenance program. ANA asserts that 
paragraph (g)(3) of AD 2008-10-06, Amendment 39-15512 (73 FR 25990, May 
8, 2008), already requires incorporation of AWLs 28-AWL-24 through 28-
AWL-29. ANA believes that the proposed requirement is duplicating an 
existing requirement.
    We do not agree to remove paragraph (h)(1) of this AD. We 
acknowledge that paragraph (g)(3) of AD 2008-10-06 does specify 
revising the maintenance program to incorporate AWLs 28-AWL-24 through 
28-AWL-29--as an option. AD 2008-10-06 does not require incorporation 
of AWLs 28-AWL-24 through 28-AWL-29. Therefore, this AD does not 
duplicate a requirement and there is no reason to remove the 
requirement from this AD. However, we have revised paragraph (h)(1) of 
this AD to clarify that revising the maintenance program to include 
AWLs 28-AWL-28 and 28-AWL-29 in accordance with paragraph (g)(3) of AD 
2008-10-06, Amendment 39-15512 (73 FR 25990, May 8, 2008) ; or AD 2008-
10-06 R1, Amendment 39-16160 (75 FR 906, January 7, 2010); is 
acceptable for compliance with the corresponding requirements specified 
in paragraph (h)(1) of this AD.

Request To Allow Later Revisions of Maintenance Planning Data (MPD) 
Document

    United Airlines states that it concurs with the contents of the 
NPRM, but requests that we revise paragraph (h)(1) of the NPRM to allow 
use of later revisions of Section 9 of the Boeing 747-400 MPD Document, 
Document D621U400-9, Revision April 2008. United Airlines did not 
provide justification for this request.
    We understand United Airlines' request and operator's desire to 
have some flexibility in AD compliance actions. However, we cannot 
allow use of later revisions of Section 9 of the Boeing 747-400 MPD 
Document, Document D621U400-9. We cannot use the phrase, ``or later 
FAA-approved revisions,'' in an AD when referring to the service 
document because doing so violates Office of the Federal Register (OFR) 
regulations for approval of materials ``incorporated by reference'' in 
rules. In general terms, we are required by these OFR regulations to 
either publish the service document contents as part of the actual AD 
language; or submit the service document to the OFR for approval as 
``referenced'' material, in which case we may only refer to such 
material in the text of an AD. The AD may refer to the service document 
only if the OFR approved it for ``incorporation by reference.'' To 
allow operators to use later revisions of the referenced document 
(issued after publication of the AD), either we must revise the AD to 
reference specific later revisions, or operators must request approval 
to use later revisions as an alternative method of compliance with this 
AD under the provisions of paragraph (k) of this AD. However, as 
explained previously, we have revised this final rule to refer to 
Subsection D, ``AIRWORTHINESS LIMITATIONS--FUEL SYSTEMS,'' of Boeing 
747-400 MPD Document, Document D621U400-9, Section 9, Revision December 
2009.

Explanation of Additional Changes Made to this AD

    We have revised paragraph (h)(2) of this AD to clarify that 
revising the maintenance program to include AWL 28-AWL-23 in accordance 
with paragraph (g) of AD 2008-10-07, Amendment 39-15513 (73 FR 25977, 
May 8, 2008); or AD 2008-10-07 R1, Amendment 39-16070 (74 FR 56098, 
October 30, 2009); is acceptable for compliance with the corresponding 
requirements specified in paragraph (h)(2) of this AD.
    We have revised this AD to identify the legal name of the 
manufacturer as published in the most recent type certificate data 
sheet for the affected airplane models.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
the AD with the changes described previously. We also determined that 
these changes will not increase the economic burden on any operator or 
increase the scope of the AD.

Explanation of Change to Costs of Compliance

    Since issuance of the NPRM, we have increased the labor rate used 
in the Costs of Compliance from $80 per work-hour to $85 per work-hour. 
The Costs of Compliance information, below, reflects this increase in 
the specified hourly labor rate.

Costs of Compliance

    We estimate that this proposed AD would affect 258 airplanes of 
U.S. registry. The following table provides the estimated costs for 
U.S. operators to comply with this AD.

[[Page 38000]]



                                                                 Table--Estimated costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                     Number of U.S.-
              Action                     Work hours         Average labor         Parts           Cost per product     registered         Fleet cost
                                                            rate per hour                                               airplanes
--------------------------------------------------------------------------------------------------------------------------------------------------------
Replacement......................  \1\ 10 to 14..........             $85  \1\ $16,800 to       \1\ $17,650 to                  258  \1\ $4,553,700 to
                                                                            $36,200.             $37,390.                             $9,646,620.
Revision of Airworthiness          1.....................              85  None...............  85.................             258  $21,930.
 Limitations section.
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ Depending on airplane configuration.

Authority for this Rulemaking

    Title 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.
    We 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.

Regulatory Findings

    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.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979), and
    (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.
    You can find our regulatory evaluation and the estimated costs of 
compliance in the AD Docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new AD:

2010-13-12 The Boeing Company: Amendment 39-16343. Docket No. FAA-
2009-0906; Directorate Identifier 2009-NM-075-AD.

Effective Date

    (a) This airworthiness directive (AD) is effective August 5, 
2010.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to The Boeing Company Model 747-100, 747-
100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 
747-400D, 747-400F, 747SR, and 747SP series airplanes, certificated 
in any category; as identified in Boeing Alert Service Bulletin 747-
28A2261, dated February 19, 2009.


    Note 1: This AD requires a revision to a certain operator 
maintenance document to include new inspections. Compliance with 
these inspections is required by 14 CFR 43.16 and 91.403(c). For 
airplanes that have been previously modified, altered, or repaired 
in the areas addressed by these limitations, the operator may not be 
able to accomplish the actions described in the revisions. In this 
situation, to comply with 14 CFR 43.16 and 91.403(c), the operator 
must request approval for an alternative method of compliance 
according to paragraph (k) 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.

Subject

    (d) Air Transport Association (ATA) of America Code 28: Fuel.

Unsafe Condition

    (e) This AD results from fuel system reviews conducted by the 
manufacturer. The Federal Aviation Administration is issuing this AD 
to prevent damage to the fuel pumps caused by electrical arcing that 
could introduce an ignition source in the fuel tank which, in 
combination with flammable fuel vapors, could result in a fuel tank 
explosion and consequent loss of the airplane.

Compliance

    (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.

Replacement

    (g) Within 60 months after the effective date of this AD: 
Replace the power control relays for the main tank fuel boost pumps 
and jettison pumps, and the center tank scavenge pump, as 
applicable, with new relays having a ground fault interrupt feature, 
in accordance with the Accomplishment Instructions of Boeing Alert 
Service Bulletin 747-28A2261, dated February 19, 2009.

Maintenance Program Revision

    (h) Concurrently with the actions required by paragraph (g) of 
this AD: Revise the maintenance program by incorporating the 
applicable information in paragraphs (h)(1) and (h)(2) of this AD. 
The inspection interval for airworthiness limitations (AWLs) 28-AWL-
23, 28-AWL-28, and 28-AWL-29 starts on the date the replacement 
required by paragraph (g) of this AD is done.
    (1) For Model 747-400, 747-400D, and 747-400F series airplanes: 
Incorporate new airworthiness limitations 28-AWL-28 and 28-AWL-29 of 
Subsection D, ``AIRWORTHINESS LIMITATIONS--FUEL SYSTEMS,'' of Boeing 
747-400 Maintenance Planning Data (MPD) Document, Document D621U400-
9, Section 9, Revision December 2009. (These AWLs were first 
introduced in Revision October 2007 of the MPD document.) 
Incorporating AWLs 28-AWL-28 and 28-AWL-29 in accordance with 
paragraph (g)(3) of AD 2008-10-06, Amendment 39-15512; or AD 2008-
10-06 R1, Amendment 39-16160; is acceptable for compliance with the 
corresponding requirements specified in this paragraph.
    (2) For Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-
200C, 747-200F, 747-300, 747SP, and 747SR series airplanes: 
Incorporate new AWL 28-AWL-23 of Subsection D, ``AIRWORTHINESS 
LIMITATIONS--SYSTEMS,'' of Boeing 747-100/200/300/SP Airworthiness 
Limitations

[[Page 38001]]

(AWLs) and Certification Maintenance Requirements (CMRs), Document 
D6-13747-CMR, Revision March 2008. (This AWL was first introduced in 
Revision September 2007 of the AWLs/CMRs document.) Incorporating 
AWL 28-AWL-23 in accordance with paragraph (g) of AD 2008-10-07, 
Amendment 39-15513; or AD 2008-10-07 R1, Amendment 39-16070; is 
acceptable for compliance with the corresponding requirements 
specified in this paragraph.

No Alternative Inspection or Inspection Intervals

    (i) After accomplishing the actions required by paragraph (h) of 
this AD, no alternative inspections or inspection intervals may be 
used, unless the inspections or intervals are approved as an 
alternative method of compliance (AMOC) in accordance with the 
procedures specified in paragraph (k) of this AD.

Credit for Actions Done Using Previous Service Information

    (j) Incorporating new AWLs 28-AWL-28 and 28-AWL-29 of Subsection 
D, ``AIRWORTHINESS LIMITATIONS--FUEL SYSTEMS,'' of Boeing 747-400 
Maintenance Planning Data (MPD) Document, Document D621U400-9, 
Section 9, Revision April 2008; or Revision March 2009; before the 
effective date of this AD is acceptable for compliance with the 
requirements of paragraph (h)(1) of this AD.

Alternative Methods of Compliance (AMOCs)

    (k)(1) The Manager, Seattle 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: Georgios Roussos, Aerospace Engineer, Systems and Equipment 
Branch, ANM-130S, FAA, Seattle Aircraft Certification Office, 1601 
Lind Avenue SW., Renton, Washington 98057-3356; telephone (425) 917-
6482; fax (425) 917-6590. Information may be e-mailed to 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
    (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

    (l) You must use the service information contained in Table 1 of 
this AD to do the actions required by this AD, as applicable, unless 
the AD specifies otherwise.

                                   Table 1--Material Incorporated by Reference
----------------------------------------------------------------------------------------------------------------
                       Document                                  Revision                        Date
----------------------------------------------------------------------------------------------------------------
Boeing Alert Service Bulletin 747[dash]28A2261.......  Original....................  February 19, 2009
Subsection D, ``AIRWORTHINESS LIMITATIONS--SYSTEMS,''  March 2008..................  March 2008
 of Boeing 747[dash]100/200/300/SP Airworthiness
 Limitations (AWLs) and Certification Maintenance
 Requirements (CMRs), Document D6[dash]13747-CMR.
Subsection D, ``AIRWORTHINESS LIMITATIONS--FUEL        December 2009...............  December 2009
 SYSTEMS,'' of Section 9 of the Boeing 747[dash]400
 Maintenance Planning Data (MPD) Document, Document
 D621U400-9.
----------------------------------------------------------------------------------------------------------------

     (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.
    (2) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P. O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 
206-544-5000, extension 1; fax 206-766-5680; e-mail 
me.boecom@boeing.com; Internet https://www.myboeingfleet.com.
    (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: https://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

    Issued in Renton, Washington, on June 10, 2010.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.

[FR Doc. 2010-15651 Filed 6-30-10; 8:45 am]
BILLING CODE 4910-13-P
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.