AD 2005-20-19 Airworthiness Directives; BAE Systems (Operations) Limited Model ATP Airplanes

Models named: ATP. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to all BAE Systems (Operations) Limited Model ATP airplanes, certificated in any category.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspections (f) Within 180 days after the effective date of this AD, perform X-ray (radiographic) inspections for corrosion of the engine sub-frame tubes in Zone 1 and the engine attachment struts in Zone 5, in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletins ATP-54-18 and ATP-54-19, both dated March 2, 2001. Although the service bulletins referenced in this AD specify to submit inspection results to the manufacturer, this AD does not require that action. Corrective Action (g) If any corrosion is found during the inspections required by paragraph (f) of this AD: Before further flight, replace the corroded component with a serviceable component, in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletins ATP-54-18 and ATP-54-19, both dated March 2, 2001; or repair the corroded component in accordance with a method approved by either the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the Civil Aviation Authority (or its delegated agent). Alternative Methods of Compliance (AMOCs) (h)(1) The Manager, International Branch, ANM-116, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with 14 CFR 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Related Information (i) British airworthiness directives 006-03-2001 and 007-03-2001 also address the subjects of this AD. Material Incorporated by Reference (j) You must use BAE Systems (Operations) Limited Service Bulletin ATP-54-18, dated March 2, 2001; and BAE Systems (Operations) Limited Service Bulletin ATP-54-19, dated March 2, 2001; 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 British Aerospace Regional Aircraft American Support, 13850 Mclearen Road, Herndon, Virginia 20171, 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. Issued in Renton, Washington, on September 26, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-19832 Filed 10-5-05; 8:45 am] BILLING CODE 4910-13-P

This AD results from reports of reduced thickness in localized areas of the engine sub-frame tubes due to corrosion, and reports that corrosion may also exist in the engine attachment struts in zone 5. The FAA is issuing this AD to prevent failure of the engine sub-frame tubes or the engine attachment struts, which could result in separation of an engine from the airplane.