2006-22-01: Girt bar leaf springs

2006-22-01 Boeing: Amendment 39-14798. Docket No. FAA-2005-21968; Directorate Identifier 2005-NM-077-AD. \n\nEffective Date \n\n\t(a) This AD becomes effective December 1, 2006. \n\nAffected ADs \n\n\t(b) None. \n\nApplicability \n\n\t(c) This AD applies to Boeing Model 757-200 and -200CB series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 757-52-0085, dated March 24, 2005; and Boeing Model 757-300 series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 757-52-0086, dated March 24, 2005. \n\nUnsafe Condition \n\n\t(d) This AD results from a report that the escape slides failed to deploy correctly during an operator's tests of the escape slides. We are issuing this AD to prevent escape slides from disengaging from the airplane during deployment or in use, which could result in injuries to passengers or flightcrew. \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\nDetailed Inspection and Corrective Actions \n\n\t(f) Within 24 months after the effective date of this AD: Do a detailed inspection for inadequate spring retention force and inadequate girt bar slider dimensions of the girt bar leaf springs for the escape slides at passenger doors 1, 2, and 4; and do any applicable corrective actions before further flight. Do all the actions in accordance with the Accomplishment Instructions of the applicable service bulletin in paragraph (f)(1) or (f)(2) of this AD, except as provided by paragraph (g) of this AD. Where the airplane maintenance manuals (AMMs) and component maintenance manuals (CMMs) referenced by the applicable service bulletin include procedures that allow bending the girt bar retention spring, this AD does not allow that procedure. Repeat the inspection thereafter at intervals not to exceed 24 months, or after each maintenancetask where removal of and installation of the girt bar is necessary, whichever occurs earlier. \n\t(1) For Boeing Model 757-200 and -200CB series airplanes: Boeing Special Attention Service Bulletin 757-52-0085, dated March 24, 2005. \n\t(2) For Boeing Model 757-300 series airplanes: Boeing Special Attention Service Bulletin 757-52-0086, dated March 24, 2005. \n\nEquivalent Procedures \n\n\t(g) Where the applicable service bulletin specified in paragraph (f)(1) or (f)(2) of this AD specifies that actions may be accomplished in accordance with an "approved equivalent procedure": The corrective actions must be accomplished in accordance with the applicable chapter/section of the Boeing 757 AMM or Boeing 757 CMM specified in the applicable service bulletin. Where the AMMs and CMMs include procedures that allow bending the girt bar retention spring, this AD does not allow that procedure. \n\nAlternative Methods of Compliance (AMOCs) \n\n\t(h)(1) The Manager, Seattle Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. \n\t(2) Before using any AMOC approved in accordance with Sec. 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\nMaterial Incorporated by Reference \n\n\t(i) You must use Boeing Special Attention Service Bulletin 757- 52-0085, dated March 24, 2005; or Boeing Special Attention Service Bulletin 757-52-0086, dated March 24, 2005; as applicable; to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. 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 Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., Room PL-401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal--regulations/ ibr--locations.html.