2017-11-05: Turbine/ turboprop Engine, Turbine Section

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 airworthiness directive (AD): 2017-11-05 Roll-Royce Corporation (Type Certificate previously held by Allison Engine Company): Amendment 39-18904; Docket No. FAA-2016- 9553; Directorate Identifier 2016-NE-29-AD. (a) Effective Date This AD is effective July 18, 2017. (b) Affected ADs None. (c) Applicability (1) This AD applies to Rolls-Royce Corporation (RRC) AE 3007C and 3007C1 turbofan engines with 1st stage high-pressure turbine (HPT) wheels, part number (P/N) 23062373, 23065891, or 23070664; or with 2nd stage HPT wheels, P/N 23063462, 23065892, 23069116, 23069592 (except those serial numbers (S/Ns) noted in paragraph (c)(2) of this AD), or 23074643, installed. (2) This AD does not apply to RRC AE 3007C and 3007C1 turbofan engines with 2nd stage HPT wheels, P/N 23069592, with S/Ns listed in Table 6 of RRC Alert Service Bulletin (ASB) AE 3007C-A-72-318, Revision 2, dated September 23, 2016, installed. (d) Subject Joint Aircraft System Component (JASC) Code 7250, Turbine/ turboprop Engine, Turbine Section. (e) Unsafe Condition This AD was prompted by analysis and by cracks found in the HPT wheel during an inspection. We are issuing this AD to prevent uncontained failure of the HPT wheels, damage to the engine, and damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (1) For all RRC AE 3007C or C1 engines with an installed 1st stage HPT wheel, P/N 23062373, 23065891, or 23070664, or 2nd stage HPT wheel, P/N 23063462, 23065892, 23069116, 23069592 (except those S/Ns excluded by paragraph (c)(2) of this AD) or 23074643, after the effective date of this AD, remove the affected wheels before exceeding the new life limits identified in paragraph C., Table 1 of RRC ASB AE 3007C-A-72-318, Revision 2, dated September 23, 2016. [[Page 26987]] (2) After the effective date of this AD, do not return to service any engine with an HPT turbine wheel, with an affected P/N and an S/N, with a wheel life that exceeds the new life limits identified in paragraph C., Table 1 of RRC ASB AE 3007C-A-72-318, Revision 2, dated September 23, 2016. (g) Alternative Methods of Compliance (AMOCs) The 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. (h) Related Information For 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. (i) Material Incorporated by Reference (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. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Rolls-Royce Corporation (RRC) Alert Service Bulletin AE 3007C-A-72-318, Revision 2, dated September 23, 2016. (ii) Reserved. (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: 317-230-3774; email: royce.com">indy.pubs.services@rolls-royce.com; Internet: www.rolls-royce.com. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue,Burlington, MA 01803. 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.