AD 2010-14-13 Airworthiness Directives; The Boeing Company Model 777 Airplanes

Models named: 777-200, -200LR, -300, -300ER. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to The Boeing Company Model 777-200, -200LR, -300, and -300ER airplanes, certificated in any category; as identified in Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspect the Slat Main Track Stop Hardware and Measure the Torque of the Slat Main Track Stop Hardware (g) At the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010, except as required by paragraph (h) of this AD: Do the applicable actions specified in paragraphs (g)(1) and (g)(2) of this AD. (1) For all airplanes: Do a detailed inspection of the slat main track stop hardware to determine if the bolt, nut, or stops are missing and to determine if the thread protrusion of the bolt from the nut is within specified limits, and do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010, except as required by paragraph (i) of this AD. Do all applicable related investigative and corrective actions at the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010, except as required by paragraph (h) of this AD. (2) For airplanes identified as Group 2 airplanes in Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010: Do a detailed inspection of the slat cans at the outboard slat number 3 and 12 outboard main track locations for holes and wear damage and do all applicable corrective actions, and replace the downstop hardware for the outboard slats number 3 and 12 outboard and inboard main track locations, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010. Do all applicable corrective actions at the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010. Exception to the Service Bulletin (h) Where Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010, specifies a compliance time after the date on the service bulletin, this AD requires compliance within the specified compliance time after the effective date of this AD. (i) Where Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010, specifies measuring torque of the nuts of the slat main track stop hardware of slats 3 and 12, this AD does not require that action for Group 2 airplanes. Credit for Actions Accomplished Previously (j) Actions accomplished before the effective date of this AD according to Boeing Alert Service Bulletin 777-57A0064, dated March 26, 2009, are considered acceptable for compliance with the corresponding actions specified in this AD. Alternative Methods of Compliance (AMOCs) (k)(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. Send information to ATTN: Duong Tran, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 917-6452; fax (425) 917-6590. Or, e-mail information to 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov . (2) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD. (3) An AMOC that provides an acceptable level of safety may be used for any repair required by this AD, if it is approved by the Boeing Commercial Airplanes Organization Designation Authorization (ODA) that 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 (l) You must use Boeing Service Bulletin 777-57A0064, Revision 1, dated May 6, 2010, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 206-544-5000, extension 1; fax 206-766-5680; e-mail me.boecom@boeing.com; Internet https://www.myboeingfleet.com . (3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221. (4) You may also review copies of the service information that is incorporated by reference 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/code_of_federal_regulations/ibr_locations.html. Issued in Renton, Washington on June 21, 2010. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2010-16201 Filed 7-12-10; 8:45 am] BILLING CODE 4910-13-P

This AD results from a report of a hole in the inboard main track slat can for outboard slat number 12 on a Model 777 airplane. The Federal Aviation Administration is issuing this AD to detect and correct damage to the outboard slat main track slat cans, which can allow fuel leakage into the fixed wing leading edge in excess of the capacity of the draining system. Excess fuel leakage could result in an uncontained fire.