2005-24-03 R1: Nacelle support fittings

2005-24-03 R1 Boeing: Amendment 39-14955. Docket No. FAA-2006-25000; Directorate Identifier 2006-NM-096-AD. \n\nEffective Date \n\n\t(a) The effective date of this AD is April 12, 2007. \n\nAffected ADs \n\n\t(b) This AD revises AD 2005-24-03. \n\nApplicability \n\n\t(c) This AD applies to Boeing Model 737-600, -700, -700C, and - 800 series airplanes; line numbers 1 through 761 inclusive, except for line numbers 596, 683, 742, 749, 750, 751, 754, 755, 759, and 760; certificated in any category. \n\nUnsafe Condition \n\n\t(d) This AD results from a determination that errors were inadvertently included in the existing AD. We are issuing this AD to prevent inadequate fastener clamp-up, which could result in cracking of the fastener holes, cracking along the lower wing skin panels, fuel leaking from the wing fuel tanks onto the engines, and possible fire. \n\nCompliance \n\n\t(e) You are responsible for having the actions required by this AD performed within the compliance times specified,unless the actions have already been done. \n\nInspection/Measurement and Related Investigative and Corrective Actions \n\n\t(f) At the applicable time specified in paragraph (f)(1) or (f)(2) of this AD: Inspect/measure the length of certain attachment fasteners between the lower wing skin panels and the nacelle support fittings. Do the inspection/measurement, and all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 737-57-1275, Revision 1, dated August 18, 2005. After the effective date of this AD only Boeing Service Bulletin 737-57-1275, Revision 3, dated October 17, 2006; shall be used. \n\n\t(1) For Model 737-700 series airplanes modified by Supplemental Type Certificate (STC) ST00830SE as of December 28, 2005 (the effective date of AD 2005-24-03): Accomplish the actions at the later of the times specified in paragraphs (f)(1)(i) and (f)(1)(ii) of this AD. \n\n\t(i) Prior to the accumulation of 25,000 total flight hours or 25,000 total flight cycles, whichever is first. \n\n\t(ii) Within 12 months after December 28, 2005. \n\n\t(2) For all other airplanes: Accomplish the actions at the later of the times specified in paragraphs (f)(2)(i) and (f)(2)(ii) of this AD. \n\n\t(i) Prior to the accumulation of 30,000 total flight hours or 30,000 total flight cycles, whichever is first. \n\n\t(ii) Within 12 months after December 28, 2005. \n\n\t(g) If accomplishing a corrective action as required by paragraph (f) of this AD, and the service bulletin specifies to contact Boeing for repair information: Before further flight, do the repair using a method approved in accordance with paragraph (i) of this AD. \n\nActions Accomplished According to Previous Issue of Service Bulletin \n\n\t(h) Actions accomplished before December 28, 2005, in accordance with Boeing Service Bulletin 737-57-1275, dated September 4, 2003; are considered acceptable for compliance with the corresponding actions specified inthis AD. \n\nAlternative Methods of Compliance (AMOCs) \n\n\t(i)(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. \n\n\t(2) AMOCs approved previously in accordance with AD 2005-24-03, are approved as AMOCs for the corresponding provisions of this AD. \n\n\t(3) Before using any AMOC approved in accordance with 14 CFR 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office.\n \n\t(4) An AMOC that provides an acceptable level of safety may be used for any repair required by this AD, if it is approved by an Authorized Representative for the Boeing Commercial Airplanes Delegation Option Authorization Organization who has been authorized by the Manager, Seattle ACO, to make those findings. For a repair method to be approved, the repair must meet the certification basis of the airplane, and the approval must specifically refer to this AD. \n\nMaterial Incorporated by Reference \n\n\t(j) You must use the service information identified in Table 1 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. \n\n\tTable 1.--All Material Incorporated by Reference \n\n\nBoeing Service Bulletin\nRevision Level\nDate\n737-57-1275\n1\nAugust 18, 2005\n737-57-1275\n3\nOctober 17, 2006\n\n\n\t(1) The Director of the Federal Register approved the incorporation by reference of Boeing Service Bulletin 737-57-1275, Revision 3, dated October 17, 2006; in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. \n\n\t(2) On December 28, 2005 (70 FR 70713, November 23, 2005), the Director of the Federal Register approved the incorporation by reference of Boeing Service Bulletin 737-57-1275, Revision 1, dated August 18, 2005. \n\n\t(3) Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207, for a copy of this service information. You may review copies at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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/cfr/ibr-locations.html.