2015-02-08: Turbine wheels

Adoption of the Amendment \n\n\n\tAccordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n0 1. The authority citation for part 39 continues to read as follows: \n\n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\n\n\nSec. 39.13 (Amended) \n\n0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): \n\n2015-02-08 Roll-Royce Corporation (Type Certificate previously held by Allison Engine Company): Amendment 39-18075; Docket No. FAA-2014- 0462; Directorate Identifier 2014-NE-06-AD. \n\n(a) Effective Date \n\n\n\tThis AD is effective March 11, 2015. \n\n(b) Affected ADs \n\n\n\tNone. \n\n(c) Applicability \n\n\n\tThis AD applies to all Rolls-Royce Corporation (RRC) AE 2100D2, 2100D2A, 2100D3, and 2100P turboprop engines and AE 3007A1, A1/1, A1/3, A1E, A1P, A2, A3, C, C1, and C2 turbofan engines: \n\t(1) With an installed 1st stage gas generator turbine wheel, part number (P/N) 23079946, 23088906, or 23089692, all serial numbers (S/Ns) listed in Table 2 and Table 3 of RRC Alert Service Bulletin (ASB) No. AE 2100D2-A-72-085, dated July 25, 2013; and in Table 2 and Table 3 of RRC ASB No. AE 2100D3-A-72-277, dated July 25, 2013. \n\t(2) With an installed high-pressure turbine (HPT) stage 1 or HPT stage 2 wheel, P/N 23079946, 23088906, 23088784, 23084520, 23084781, 23088817, or 23088818, all S/Ns listed in Table 1 through Table 7 of RRC ASB No. AE 3007A-A-72-407, Revision 1, dated August 29, 2014, except those S/Ns excluded by Table 1, Table 2, Table 4, and Table 5 of RRC ASB No. AE 3007A-A-72-407, Revision 1, dated August 29, 2014. \n\t(3) With an installed HPT stage 2 wheel, P/N 23084520 or 23088818, all S/Ns listed in Table 1 and Table 2 of RRC ASB No. AE 3007C-A-72-316, dated December 6, 2013, except those S/Ns excluded by Table 1 of RRC ASB No. AE 3007C-A-72-316, dated December 6, 2013. \n\t(4) With an installed 4th stage turbine wheel, P/N 23083536, all S/Ns listed in Table 2 of RRC ASB No. AE 2100P-A-72-019, dated July 25, 2013. \n\n(d) Unsafe Condition \n\n\n\tThis AD was prompted by reports of pitting in the wheel bores and subsequent RRC analysis that concluded that lower life \n\n((Page 5911)) \n\nlimits are needed for the affected turbine wheels. We are issuing this AD to prevent uncontained failure of the turbine wheels, damage to the engine, and damage to the airplane. \n\n(e) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\t(1) For all RRC AE 3007A1, A1/1, A1/3, A1E, A1P, and A3 series engines with an HPT stage 2 wheel P/N and S/N identified in RRC ASB No. AE 3007A-A-72-408, Revision 1, dated August 29, 2014, at each shop visit after the effective date of this AD, eddy current inspect the bore of the affected HPT stage 2 wheels. Use RRC ASB No. AE 3007A-A-72-408, Revision 1, August 29, 2014, to do the inspection. Do not return to service any wheel that fails the inspection required by this AD. \n\t(2) Thirty days after the effective date of this AD, do not return to service any engine that has a turbine wheel with a P/N and an S/N listed in any of the following RRC ASBs whose wheel life exceeds the new life limits identified in the following RRC ASBs: \n\t(i) RRC ASB No. AE 2100D2-A-72-085, dated July 25, 2013; \n\t(ii) RRC ASB No. AE 2100D3-A-72-277, dated July 25, 2013; \n\t(iii) RRC ASB No. AE 2100P-A-72-019, dated July 25, 2013; \n\t(iv) RRC ASB No. AE 3007A-A-72-407, Revision 1, dated August 29, 2014; or \n\t(v) RRC ASB No. AE 3007C-A-72-316, dated December 6, 2013. \n\n(f) Installation Prohibition \n\n\n\tThirty days after the effective date of this AD, do not install an affected wheel, as identified in paragraph (c) of this AD, into any RRC AE 3007C2 engine. \n\n(g) Definition \n\n\n\tFor the purpose of this AD, an ''engine shop visit'' is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine flanges, except that the separation of engine flanges solely for the purposes of transportation without subsequent engine maintenance is not an engine shop visit. \n\n(h) Alternative Methods of Compliance (AMOCs) \n\n\n\tThe Manager, Chicago Aircraft Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. \n\n(i) Related Information \n\n\n\tFor more information about this AD, contact Kyri Zaroyiannis, Aerospace Engineer, Chicago Aircraft Certification Office, Small Airplane Directorate, FAA, 2300 E. Devon Ave., Des Plaines, IL 60018; phone: 847-294-7836; fax: 847-294-7834; email: kyri.zaroyiannis@faa.gov. \n\n(j) Material Incorporated by Reference \n\n\n\t(1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. \n\t(2) You must use this service information as applicable to do the actions required bythis AD, unless the AD specifies otherwise. \n\t(i) Rolls-Royce Alert Service Bulletin (ASB) No. AE 2100D2-A-72- 085, dated July 25, 2013. \n\t(ii) Rolls-Royce ASB No. AE 2100D3-A-72-277, dated July 25, 2013. \n\t(iii) Rolls-Royce ASB No. AE 2100P-A-72-019, dated July 25, 2013. \n\t(iv) Rolls-Royce ASB No. AE 3007A-A-72-407, Revision 1, dated August 29, 2014. \n\t(v) Rolls-Royce ASB No. AE 3007A-A-72-408, Revision 1, dated August 29, 2014. \n\t(vi) Rolls-Royce ASB No. AE 3007C-A-72-316, dated December 6, 2013. \n\t(3) For RRC service information identified in this AD, contact Rolls-Royce Corporation, 450 South Meridian Street, Mail Code NB-01- 06, Indianapolis, IN 46225; phone: 317-230-1667; email: royce.com">CMSEindyOSD@rolls-royce.com; Internet: www.rolls-royce.com. \n\t(4) You may view this service information at 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. \n\t(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.