Show the full text (3,634 characters)
2000-22-11 BOEING: Amendment 39-11957. Docket 99-NM-374-AD. \n\n\tApplicability: Model 767 series airplanes, line numbers 1 through 723 inclusive, certificated in any category. \n\n\tNote 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. \n\n\tCompliance: Required as indicated, unless accomplished previously. \n\n\tTo prevent ice accumulation on the aileron control cables and/or main landing gear (MLG) door and door seal during flight, which could render one of the aileron control systems and/or the MLG doors inoperative, resulting in reduced controllability of the airplane, accomplish the following: \n\nModification\n\t(a) Within 36 months after the effective date of this AD: Modify the canted pressure deck drain system in the wheel well of the MLG, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-51A0020, Revision 1, dated July 22, 1999. \n\n\tNote 2: Modification of the canted pressure deck drain system accomplished prior to the effective date of this AD in accordance with Boeing Alert Service Bulletin 767-51A0020, dated November 19, 1998, is considered acceptable for compliance with the modification specified in this AD. \n\n\tNote 3: Accomplishment of the actions specified in both Boeing Service Bulletins 767-53-0059, dated November 12, 1992, and 767-51-0019,dated June 27, 1996, is acceptable for compliance with paragraph (a) of this AD. \n\nAlternative Methods of Compliance\n\t(b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Seattle ACO. \n\n\tNote 4: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Seattle ACO. \n\nSpecial Flight Permits\n\t(c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. \n\nIncorporation by Reference\n\t(d) The actions shall be done in accordance with Boeing Service Bulletin 767-51A0020, Revision 1, dated July 22, 1999. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124-2207. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. \n\nEffective Date\n\t(e) This amendment becomes effective on December 13, 2000.
