2006-23-11: High pressure (HP)/intermediate pressure (IP) turbine bearing oil feed tube heat shield

2006-23-11 Rolls-Royce plc: Amendment 39-14823. Docket No. FAA-2006- 26052; Directorate Identifier 2006-NE-30-AD. Effective Date (a) This airworthiness directive (AD) becomes effective December 19, 2006. Affected ADs (b) None. Applicability (c) This AD applies to Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines that do not incorporate RR Service Bulletin RB.211-71-F117 or RB.211-72-048. These engines are installed on, but not limited to, Airbus A330 series airplanes. Unsafe Condition (d) This AD results from a report that a damaged outer heat shield fretted the oil feed tubes. We are issuing this AD to prevent an uncontained failure of the high pressure (HP) turbine disc and damage to 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. Initial Inspection (f) Initially inspect the HP/IP turbine oil feed tube outer heat shield for cracks. Use either 3.A.(1) through 3.A.(3) on-wing procedures or 3.B.(1)(a) through 3.B.(1)(e) in-shop procedures of RR ASB RB.211-72-AF045, Revision 2, dated July 27, 2006, at one of the following compliance times: (1) At the next shop visit of the 05 Module regardless of the reason for the visit, or (2) Before one of the following intervals whichever occurs latest: (i) 30 days from the effective date of this AD, or (ii) 10,000 hours or 2,500 cycles since new, whichever occurs first, or (iii) 2,500 cycles since overhaul of the 05 Module. Repetitive Inspection (g) Re-inspect the HP/IP turbine oil feed tube outer heat shield for cracks as specified in the applicable criteria of paragraphs C.(1)(b)(i) through C(1)(b)(vi) or C(2)(b)(i) through C(2)(b)(ii) of RR ASB RB.211-72-AF045, Revision 2, dated July 27, 2006. Use either 3.A.(1) through 3.A.(3) on-wing procedures or 3.B.(1)(a) through 3.B.(1)(e)in-shop procedures of RR ASB RB.211-72-AF045, Revision 2, dated July 27, 2006. Remove HP/IP Turbine Oil Feed Tube Outer Heat Shields From Service (h) Remove from service HP/IP turbine oil feed tube outer heat shields according to the applicable criteria in paragraphs C(1)(b)(vii) through C(1)(b)(vii) or C(2)(b)(iii) of RR ASB RB.211- 72-AF045, Revision 2, dated July 27, 2006. Alternative Methods of Compliance (i) The Manager, Engine Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (j) EASA airworthiness directive 2006-0073, dated April 3, 2006, also addresses the subject of this AD. Material Incorporated by Reference (k) You must use Rolls-Royce Alert Service Bulletin No. RB.211- 72-AF045, Revision 2, dated July 27, 2006, to perform the inspections required by this AD. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Rolls-Royce plc P.O. Box 31, Derby, DE24 8BJ, United Kingdom; telephone 44 (0) 1332 242424; Fax 44 (0) 1332 249936 for a copy of this service information. You may review copies at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or 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/cfr/ ibr-locations.html.