2012-24-05: Oil transfer tube

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-24-05 Rolls-Royce plc: Amendment 39-17275; Docket No. FAA-2012- 1117; Directorate Identifier 2012-NE-25-AD. (a) Effective Date This airworthiness directive (AD) becomes effective December 26, 2012. (b) Affected ADs None. (c) Applicability This AD applies to Rolls-Royce plc (RR) RB211-Trent 970-84 and 972-84 series turbofan engines, all serial numbers. (d) Reason This AD was prompted by a Trent 900 engine experiencing a high intermediate pressure vibration fault, along with other fluctuating engine parameters, while in flight. We areissuing this AD to prevent fracture of the oil transfer tube, which could result in uncontained failure of the engine and damage to the airplane. (e) Actions and Compliance Before further flight, unless already done, do the following: (1) Use paragraph 1.A. of RR Alert Non-Modification Service Bulletin (NMSB) RB.211-72-AH051, dated August 3, 2012, or Revision 1, dated September 11, 2012, and RR NMSB RB.211-72-H056, dated August 3, 2012, or Revision 1, dated September 11, 2012, to determine which engine serial numbers to inspect. (2) Inspect the LPT bearing housing end cover assembly for the presence of a spherical seat, P/N CU38971. For guidance on performing the inspection, see paragraphs 3.A.(5) through 3.A.(8) of the SBs listed in paragraph (e)(1) of this AD. (3) If, during the inspection required by paragraph (e)(2) of this AD, you find that spherical seat, P/N CU38971, is missing, replace the LPT bearing housing end cover assembly, P/N FW22780, with a part eligible for installation. [[Page 73270]] (f) Installation Prohibition After the effective date of this AD: (1) Do not approve for return to service any airplane with an engine, affected by this AD, installed, unless the engine has passed the inspection required by paragraph (e)(2) of this AD. (2) Do not install an LPT bearing housing end cover assembly, P/ N FW22780, onto any engine required to be inspected by this AD, unless the LPT bearing housing end cover assembly was inspected as required by this AD. (g) Credit for Previous Actions If you accomplished the actions required by paragraph (e) of this AD before the effective date of this AD using RR Technical Variance (TV) 125436, issue 2, dated July 27, 2012, you met the requirements of paragraph (e) of this AD. (h) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs to this AD. Use the procedures found in 14 CFR 39.19 to make your request.(i) Related Information (1) For more information about this AD, contact Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7143; fax: 781-238-7199; email: [email protected]. (2) Refer to European Aviation Safety Agency Airworthiness Directive 2012-0145, dated August 6, 2012, for related information. (j) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the following service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use the following service information to do the actions required by this AD, unless the AD specifies otherwise: (i) Rolls-Royce (RR) Alert Non-Modification Service Bulletin (NMSB) RB.211-72-AH051, dated August 3, 2012. (ii) RR Alert NMSB RB.211-72-AH051, Revision 1, dated September 11, 2012. (iii) RR NMSB RB.211-72-H056, datedAugust 3, 2012. (iv) RR NMSB RB.211-72-H056, Revision 1, dated September 11, 2012. (3) For service information identified in this AD, contact Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, England, DE248BJ; phone: 011-44-1332-242424; fax: 011-44-1332- 245418, email: http://www.rolls-royce.com/contact/civil_team.jsp, or download the publication from https://www.aeromanager.com. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. (5) You may view this service information 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.