The FAA proposed to amend 14 CFR part 39 with an AD for certain Boeing Model 747-400, -400D, -400F; 767-200, - 300, -300F; and 777-200 and -300 series airplanes. That action, published in the Federal Register on August 6, 2004 (69 FR 47802), proposed to require installing a jumper wire between the wiring of the fire extinguisher switch and the fuel shutoff switch for each engine, and other specified actions. \n\nComments \n\n\tWe provided the public the opportunity to participate in the development of this AD. We have considered the comments that have been submitted on the proposed AD. \n\nSupportive Comment \n\n\tOne commenter states that they have accomplished the necessary airplane modifications on all affected Model 777-200 series airplanes in their fleet. In addition, the commenter states that no additional work is necessary to comply with Boeing Service Bulletin 777-28-0025, Revision 1, dated March 17, 2005. The commenter did not state any finding of service problems or errors in either the service bulletins or the AD, nor has the commenter suggested any change to the AD. We infer that the commenter has no objections to the AD. \n\nRequest to Revise Service Bulletin References \n\n\tOne commenter requests that we coordinate the release of this AD with the pending revisions to Boeing Special Attention Service Bulletins 747-28-2238, dated October 18, 2001; and 777-28-0025, dated January 10, 2002. The commenter states that several information notices describe changes to the work instructions that will be incorporated into pending service bulletin revisions. If this AD is released calling for the un-revised service bulletins, each airline would need to request an alternative method of compliance (AMOC) to allow the incorporation of the revised work instructions. We infer that the commenter wants the AD to reference the revised service bulletins. \n\n\tWe agree with the commenter's request to reference the revised service bulletins. We have reviewed Boeing Service Bulletins 747-28- 2238, Revision 1; and 777-28-0025, Revision 1; both dated March 17, 2005. The revisions incorporate the changes described in the information notices. Paragraph (f) of this AD has been revised to refer to Revision 1 of Boeing Service Bulletins 747-28-2238 and 777-28-0025. Paragraph (g) of the proposed AD already gives credit for actions done before the effective date of this AD in accordance with the original issues of these service bulletins, so no change is needed to the final rule in this regard. \n\nRequest To Allow Standard Parts \n\n\tOne commenter requests that the AD be revised to allow the use of standard materials in accordance with Chapter 20 of the Boeing Standard Wiring Practices Manual in place of the specific Boeing part number called out in the applicable Boeing service bulletins. While no justification is provided, the commenter contends that the use of such standard materials would maintain an equivalent level of safety for the modification. \n\n\tWe do not agree with the commenter's request to use the standard materials since it is not clear what materials would be substituted or how the materials are equivalent in safety. The final rule has not been changed in this regard. However, if operators care to provide technical justification, they may request approval of an AMOC from the FAA in accordance with paragraph (h) of this AD. \n\nClarification of Revision to Paragraph (g) of This AD \n\n\tWe have removed reference to Boeing Special Attention Service Bulletin 767-28-0066, Revision 1, dated May 29, 2003, from paragraph (g) of this AD. The reference is the same as that in paragraph (f) of this AD. Paragraph (e) of this AD already gives credit for work done before the effective date of the AD. \n\nConclusion \n\n\tWe have carefully reviewed the available data, including the comments that have been submitted, and determined that air safety and the public interest require adopting the AD with the changes describedpreviously. We have determined that these changes will neither increase the economic burden on any operator nor increase the scope of the AD. \n\nCosts of Compliance \n\n\tThis AD will affect about 1,882 airplanes worldwide. We estimate that 579 airplanes of U.S. registry will be affected by this AD. The following table provides the estimated costs for U.S. operators to comply with this AD. \n\n\tEstimated Costs\n\n\nAction model series \nWork hours \nAverage labor rate per hour \nParts \nCost per airplane \nInstallation 747-400, -400D, -400F \n4 \n65 \n1,450 \n1,710 \nTest 747-400, -400D, 400F \n2 \n65 \n(*) \n130 \nInstallation 767-200, -300, -300F \n4 \n65 \n(*) \n760 \nTest 767-200, -300, -300F \n2 \n65 \n(*) \n130 \nInstallation \n4 \n65\n220 \n480 \nTest 777-200, -300 \n2 \n65 \n(*) \n130 \n*None.\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 authorityof 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. 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 FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD):