AD 2009-24-05 Airworthiness Directives; Rolls-Royce plc RB211-Trent 800 Series Turbofan Engines

This AD applies to Rolls-Royce plc models RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines with fuel-to-oil heat exchangers, part numbers 55003001-1 and 55003001-11, installed. These engines are installed on, but not limited to, Boeing 777 series airplanes. Reason (d) This AD results from the risk of engine fuel-to-oil heat exchanger (FOHE) blockage. We are issuing this AD to prevent ice from blocking the FOHE, which could result in an unacceptable engine power loss and loss of control of the airplane.

Unless already done, within 6,000 flight hours after the effective date of this AD, but no later than January 1, 2011, replace the FOHE, P/N 55003001-1 or 55003001-11, with an FOHE modified using Rolls-Royce plc Alert Service Bulletin No. RB.211-79-AG257, Revision 1, dated September 14, 2009. FAA AD Differences (f) This AD differs from the Mandatory Continuing Airworthiness Information (MCAI) by requiring replacing the FOHE within 6,000 flight hours after the effective date of this AD, rather than within 6,000 flight hours from July 10, 2009. Other FAA AD Provisions (g) Alternative Methods of Compliance (AMOCs): The Manager, Engine Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Related Information (h) Refer to MCAI Airworthiness Directive 2009-0142, dated July 13, 2009, and Rolls-Royce plc Alert Service Bulletin No. RB.211-79-AG257, Revision 1, dated September 14, 2009, for related information. Contact Rolls-Royce plc, P.O. Box 31, DERBY, DE24 8BJ, UK; telephone 44 (0) 1332 242424; fax 44 (0) 1332 249936, for a copy of this service information. (i) Contact James Lawrence, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: james.lawrence@faa.gov; telephone (781) 238-7176; fax (781) 238-7199, for more information about this AD. Material Incorporated by Reference (j) You must use Rolls-Royce plc Alert Service Bulletin No. RB.211-79-AG257, Revision 1, dated September 14, 2009, to perform the FOHE modification 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, UK; 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, 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. Issued in Burlington, Massachusetts, on November 16, 2009. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E9-28151 Filed 11-25-09; 8:45 am] BILLING CODE 4910-13-P

Unless already done, within 6,000 flight hours after the effective date of this AD, but no later than January 1, 2011, replace the FOHE, P/N 55003001-1 or 55003001-11, with an FOHE modified using Rolls-Royce plc Alert Service Bulletin No. RB.211-79-AG257, Revision 1, dated September 14, 2009. FAA AD Differences (f) This AD differs from the Mandatory Continuing Airworthiness Information (MCAI) by requiring replacing the FOHE within 6,000 flight hours after the effective date of this AD, rather than within 6,000 flight hours from July 10, 2009. Other FAA AD Provisions (g) Alternative Methods of Compliance (AMOCs): The Manager, Engine Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Related Information (h) Refer to MCAI Airworthiness Directive 2009-0142, dated July 13, 2009, and Rolls-Royce plc Alert Service Bulletin No. RB.211-79-AG257, Revision 1, dated September 14, 2009, for related information. Contact Rolls-Royce plc, P.O. Box 31, DERBY, DE24 8BJ, UK; telephone 44 (0) 1332 242424; fax 44 (0) 1332 249936, for a copy of this service information. (i) Contact James Lawrence, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: james.lawrence@faa.gov; telephone (781) 238-7176; fax (781) 238-7199, for more information about this AD. Material Incorporated by Reference (j) You must use Rolls-Royce plc Alert Service Bulletin No. RB.211-79-AG257, Revision 1, dated September 14, 2009, to perform the FOHE modification 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, UK; 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, 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. Issued in Burlington, Massachusetts, on November 16, 2009. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E9-28151 Filed 11-25-09; 8:45 am] BILLING CODE 4910-13-P