On July 6, 1990, the FAA issued AD 90-15-12, amendment 39-6663 (55 FR 29005, July 17, 1990), applicable to Boeing Model 727 series airplanes modified by the installation of Pratt and Whitney JT8D-217C or -219 engines in accordance with Valsan STC SA4363NM, to require repetitive inspections of the through-bolt nut for proper torque and for certain other conditions of the through-bolt and nut, and replacement, if necessary. That AD also requires the installation of anti-rotation plates, which constitutes terminating action for the repetitive inspections. The actions required by that AD are intended to prevent the nut coming off the through-bolt allowing the through-bolt to migrate out of the engine mount flange and cone bolt and possible separation of the engine. \n\n\tActions Since Issuance of Previous Rule\n\n\tSince the issuance of that AD, the FAA has transferred the supplemental type certificate data from the Seattle Aircraft Certification Office (ACO) tothe Los Angeles ACO. Therefore, the FAA has determined it is necessary to issue this AD to require that all future alternative methods of compliance and adjustments of compliance time be approved by the Manager of the Los Angeles ACO.\n\nExplanation of Requirements of Rule\n\n\tSince an unsafe condition has been identified that is likely to exist or develop on other airplanes of this same type design, this AD revises AD 90-15-12 to continue to require repetitive inspections of the through-bolt nut for proper torque and for certain other conditions of the through-bolt and nut, and replacement, if necessary. This AD also continues to require the installation of anti-rotation plates, which constitutes terminating action for the repetitive inspections. This AD changes the responsible office for approval of an alternative method of compliance.\n\nDetermination of Rule's Effective Date\n\n\tSince this AD is a minor and merely technical amendment in which the public is not particularly interested, and does not change the existing requirements, it is found that notice and opportunity for prior public comment hereon are unnecessary and that good cause exists for making this amendment effective in less than 30 days. \n\nComments Invited\n\n\tAlthough this action is in the form of a final rule that is a minor and merely technical amendment and, thus, was not preceded by notice and an opportunity for public comment, comments are invited on this rule. Interested persons are invited to comment on this rule by submitting such written data, views, or arguments as they may desire. Communications shall identify the Rules Docket number and be submitted in triplicate to the address specified under the caption "ADDRESSES." All communications received on or before the closing date for comments will be considered, and this rule may be amended in light of the comments received. Factual information that supports the commenter's ideas and suggestions is extremely helpful in evaluating the effectiveness of the AD action and determining whether additional rulemaking action would be needed. \n\nSubmit comments using the following format:\n\n\n Organize comments issue-by-issue. For example, discuss a request to change the compliance time and a request to change the service bulletin reference as two separate issues.\nFor each issue, state what specific change to the AD is being requested.\n Include justification (e.g., reasons or data) for each request.\n\n\tComments are specifically invited on the overall regulatory, economic, environmental, and energy aspects of the rule that might suggest a need to modify the rule. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. A report that summarizes each FAA-public contact concerned with the substance of this AD will be filed in the Rules Docket. \n\n\tCommenters wishing the FAA to acknowledge receipt of their comments submitted in response to this rule must submit a self-addressed, stamped postcard on which the following statement is made: "Comments to Docket Number 2000-NM-248-AD." The postcard will be date stamped and returned to the commenter.\n\nRegulatory Impact\n\n\tThe regulations adopted herein 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. Therefore, it is determined that this final rule does not have federalism implications under Executive Order 13132.\nThe FAA has determined that notice and comment hereon are unnecessary because this is a minor and merely technical amendment in which the public is not particularly interested. \n\nList of Subjects in 14 CFR Part 39\n\nAir transportation, Aircraft, Aviation safety, Safety.\n\nAdoption of the Amendment\n\n\tAccordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: \n\nPART 39 - AIRWORTHINESS DIRECTIVES\n1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. \n§ 39.13 (Amended)\n2. Section 39.13 is amended by removing amendment 39-6663 (55 FR 29005, July 17, 1990), and by adding a new airworthiness directive (AD), amendment 39-11838, to read as follows: