AD 2005-14-05 Airworthiness Directives; Boeing Model 777-200 and -300 Series Airplanes

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

This AD applies to Boeing Model 777-200 and -300 series airplanes, certificated in any category; as listed in Boeing Special Attention Service Bulletin 777-57-0046, dated September 25, 2003.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Modification and Resistance Test (f) Within 18 months after the effective date of this AD, apply an anti-static conductive coating to the fuel access and thermal anti-icing blowout doors at the location of the bonding fasteners, and perform a resistance test on the new coating, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-57-0046, dated September 25, 2003. Where Note (b) of Figures 1 and 2 of the Accomplishment Instructions of the service bulletin specifies to maintain the thickness of the conductive coating between 0.0004 and 0.0008 inch, this AD requires applying a uniform coating to avoid runs, sags, or wrinkles, and to ensure the anti-static coating touches the anti-static coating exposed during surface preparation. (1) If the resistance measured between the door surface and a fastener located within the doors' surrounding support structure is within the limits specified in the service bulletin, no further action is required by this paragraph. (2) If the resistance measured between the door surface and a fastener located within the doors' surrounding support structure is outside the limits specified in the service bulletin, before further flight, repeat the actions as required by paragraph (f) of this AD up to five times, as applicable. If the results of the fifth test exceed the limits specified in the service bulletin, before further flight, contact the Manager, Seattle Aircraft Certification Office (ACO), FAA, for disposition of repairs. Alternative Methods of Compliance (AMOCs) (g) The Manager, Seattle ACO, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. Material Incorporated by Reference (h) You must use Boeing Special Attention Service Bulletin 777-57-0046, dated September 25, 2003, 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 June 24, 2005. Michael J. Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-13224 Filed 7-5-05; 8:45 am] BILLING CODE 4910-13-P

This AD was prompted by a report that an anti-static coating was not applied correctly on doors located within a flammable fluid leakage zone. We are issuing this AD to prevent an uncontrollable fire in the leading edge of the wing, which could damage critical wing structures and cause a fuel tank explosion.