Airworthiness directives › 2011-23-12
AD 2011-23-12 Airworthiness Directives; Rolls-Royce plc RB211-524G2-19; -524G2-T-19; -524G3-19; -524G3-T-19; 524H2-19; -524H2-T-19; -524H-36; and -524H-T-36 Turbofan Engines
Applicability*9
This AD applies to Rolls-Royce plc RB211-524G2-19; -524G2-T-19; -524G3-19; 524G3-T-19; 524H2-19; -524H2-T-19; -524H-36; and -524H-T-36 turbofan engines. Reason (d) This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Several instances of fan blade cracking have been reported. The results of the subsequent technical investigation concluded that the cracking was caused by fan blade flutter at certain engine settings during prolonged ground running. This condition, if not corrected, could affect the integrity of the fan blades, leading to cracking of multiple fan blades and could possibly result in engine failure and release of uncontained high energy debris. We are issuing this AD to prevent fan blade flutter, which could result in an uncontained engine failure and damage to the airplane.
Compliance
Unless already done, do the following actions. (1) Within 40 months after the effective date of this AD, modify the engine by installing a full-authority fuel controller (FAFC) featuring software at Issue 17, in accordance with Accomplishment Instructions paragraphs 3.A. through 3.B. of Rolls-Royce plc Alert Service Bulletin (ASB) No. RB.211-73-AG054, Revision 2, dated June 29, 2011. (2) Engines which have been modified before the effective date of this AD, in accordance with previous revisions of ASB No. RB.211-73-AG054 are compliant with the requirement of paragraph (e)(1) of this AD. (3) From the effective date of this AD, do not install an FAFC on an engine if the FAFC incorporates software prior to Issue 17. FAA AD Differences (f) None. Alternative Methods of Compliance (AMOCs) (g) 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 European Aviation Safety Agency AD 2011-0175, dated September 8, 2011, for related information. (i) Contact Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; telephone: (781) 238-7143; fax: (781) 238-7199; email: alan.strom@faa.gov, for more information about this AD. Material Incorporated by Reference (j) You must use Rolls-Royce plc Alert Service Bulletin No. RB.211-73-AG054, Revision 2, dated June 29, 2011, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) 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 or email from http://www.rolls-royce.com/contact/civil_team.jsp, or download the publication from https://www.aeromanager.com. (3) 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. For information on the availability of this material at the FAA, call (781) 238-7125. Issued in Burlington, Massachusetts, on November 2, 2011. Peter A. White, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 2011-29208 Filed 11-10-11; 8:45 am] BILLING CODE 4910-13-P
Required actions
Unless already done, do the following actions. (1) Within 40 months after the effective date of this AD, modify the engine by installing a full-authority fuel controller (FAFC) featuring software at Issue 17, in accordance with Accomplishment Instructions paragraphs 3.A. through 3.B. of Rolls-Royce plc Alert Service Bulletin (ASB) No. RB.211-73-AG054, Revision 2, dated June 29, 2011. (2) Engines which have been modified before the effective date of this AD, in accordance with previous revisions of ASB No. RB.211-73-AG054 are compliant with the requirement of paragraph (e)(1) of this AD. (3) From the effective date of this AD, do not install an FAFC on an engine if the FAFC incorporates software prior to Issue 17. FAA AD Differences (f) None. Alternative Methods of Compliance (AMOCs) (g) 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 European Aviation Safety Agency AD 2011-0175, dated September 8, 2011, for related information. (i) Contact Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; telephone: (781) 238-7143; fax: (781) 238-7199; email: alan.strom@faa.gov, for more information about this AD. Material Incorporated by Reference (j) You must use Rolls-Royce plc Alert Service Bulletin No. RB.211-73-AG054, Revision 2, dated June 29, 2011, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) 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 or email from http://www.rolls-royce.com/contact/civil_team.jsp, or download the publication from https://www.aeromanager.com. (3) 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. For information on the availability of this material at the FAA, call (781) 238-7125. Issued in Burlington, Massachusetts, on November 2, 2011. Peter A. White, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 2011-29208 Filed 11-10-11; 8:45 am] BILLING CODE 4910-13-P
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