Airworthiness directives › 2005-12-04
AD 2005-12-04 Airworthiness Directives; Boeing Model 757-200, -200PF, and -200CB Series Airplanes
Models named: 757-200, -200PF, -200CB series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(c) This AD applies to Boeing Model 757-200, -200PF, and -200CB series airplanes; certificated in any category; line numbers 1 through 1048 inclusive; powered by Rolls Royce engines. Unsafe Condition (d) This AD was prompted by reports of cracks, loose and broken bolts, and shim migration in the joint between the aft torque bulkhead and the strut-to-diagonal brace fitting. The FAA is issuing this AD to detect and correct such conditions, which could result in damage to the strut and consequent separation of the strut and engine from the airplane.
Compliance
(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. Service Information (f) For purposes of this AD, “the service bulletin” refers to Boeing Service Bulletin 757-54A0047, Revision 1, dated March 24, 2005. Inspections (g) Inspect the joint between the aft torque bulkhead and the strut-to-diagonal brace fitting, and repair any loose shim or loose, missing, or damaged fastener, by doing all actions at the times specified in the Accomplishment Instructions of the service bulletin, as applicable, except as required by paragraphs (i), (j), and (k) of this AD. (h) An inspection and corrective actions done before the effective date of this AD in accordance with paragraph (b) or (c), as applicable, of AD 2004-12-07, amendment 39-13666, are acceptable for compliance with the initial inspection requirement of paragraph (g) of this AD. Exceptions to Service Bulletin Procedures (i) Where the service bulletin specifies a compliance time relative to the issue date of the service bulletin, this AD requires compliance within the corresponding specified time relative to the effective date of this AD. (j) For purposes of this AD, for Group 2 airplanes having line numbers 736 through 1048, the initial inspection must be done within the specified time after the date of issuance of the original standard airworthiness certificate or the date of issuance of the original export certificate of airworthiness. The grace period for these airplanes is 3,000 flights from the effective date of this AD. (k) If any crack is found during any inspection required by this AD, and the service bulletin specifies to contact Boeing for appropriate action: Before further flight, repair the crack according to a method approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA; or according to data meeting the certification basis of the airplane approved by an Authorized Representative for the Boeing 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 approval must specifically refer to this AD. Alternative Methods of Compliance (AMOCs) (l) The Manager, Seattle ACO, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) 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 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. Material Incorporated by Reference (m) You must use Boeing Service Bulletin 757-54A0047, Revision 1, dated March 24, 2005, to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approves the incorporation by reference of this document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. To get copies of the service information, contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207. To view the AD docket, go to the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., room PL-401, Nassif Building, Washington, DC. To review copies of the service information, go to 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. Issued in Renton, Washington, on May 26, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-11515 Filed 6-13-05; 8:45 am] BILLING CODE 4910-13-P
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