2020-05-01: Turbine Section

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\n2020-05-01 Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc): Amendment 39-21102; Docket No. FAA-2020-0179; Project Identifier MCAI-2019-00125-E. \n\n(a) Effective Date \n\n\n\tThis AD is effective March 25, 2020. \n\n(b) Affected ADs \n\n\n\tNone. \n\n(c) Applicability \n\n\n\tThis AD applies to all Rolls-Royce Deutschland Ltd. & Co KG (RRD) (Type Certificate Previously Held by Rolls-Royce plc) Trent 1000-AE3, Trent 1000-CE3, Trent 1000-D3, Trent 1000-G3, Trent 1000- H3, Trent 1000-J3, Trent 1000-K3, Trent 1000-L3, Trent 1000-M3, Trent 1000-N3, Trent 1000-P3, Trent 1000-Q3, and Trent 1000-R3 model turbofan engines. \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code 7250, Turbine Section. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by the manufacturer identifying that the high-pressure turbine (HPT) blades may fail prematurely. The FAA is issuing this AD to prevent failure of the HPT blades. The unsafe condition, if not addressed, could result in failure of one or more engines, loss of thrust control, and loss of the airplane. \n\n(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\n(g) Required Actions \n\n\n\t(1) Before exceeding the compliance time specified in Table 1 to paragraph (g)(1) of this AD, and thereafter at intervals not to exceed 50 HPT blade flight cycles (FCs) since the last inspection, perform an on-wing borescope inspection (BSI) of the HPT blades, part number (P/N) KH10575 (pre-mod/SB 72-J550), or P/N KH64485 (post-mod/SB 72-J550), for cracks. \n\n((Page 13730)) \n\n\n\t(i) Use Accomplishment Instructions, paragraph 3.C., of RR Alert NMSB Trent 1000 72-AK316, Revision 3, dated July 16, 2019, to perform the BSI. \n\t(ii) (Reserved) \n\t(GRAPHIC) (TIFF OMITTED) TR10MR20.017 \n\n\n\t(2) Within 10 engine FCs after in-flight shutdown (IFSD) of an engine, perform an on-wing BSI of the HPT blades, P/N KH10575 (pre- mod/SB 72-J550), or P/N KH64485 (post-mod/SB 72-J550), for cracks on the not-affected (no IFSD) engine installed on that airplane. \n\t(i) Use Accomplishment Instructions, paragraph 3.C., of RR Alert NMSB Trent 1000 72-AK316, Revision 3, dated July 16, 2019. \n\t(ii) (Reserved) \n\t(3) Remove the full set of HPT blades if any individual HPT blade is found cracked during the on-wing BSI required by paragraph (g)(1) or (2) and replace with a full HPT blade set eligible for installation within the compliance time specified in Table 2 to paragraph (g)(3) of this AD. (GRAPHIC) (TIFF OMITTED)TR10MR20.018 \n\n\n\t(4) Remove the full set of HPT blades, P/N KH10575 (pre-mod/SB 72-J550), or P/N KH64485 (post-mod/SB 72-J550), after the effective date of this AD, as follows. \n\t(i) Before accumulating 1,000 HPT blade FCs on any engine, or \n\t(ii) Before both engines installed on the airplane accumulate a combined total of 1,400 HPT blade FCs. \n\n(h) Definitions \n\n\n\tFor the purpose of this AD, ''HPT blade FCs'' are the FCs accumulated by the engine since first flight, or since the last installation of a full set of new HPT blades, whichever occurs later. \n\n(i) Credit for Previous Actions \n\n\n\tYou may take credit for any initial or repetitive BSI of the HPT blades required by paragraph (g) of this AD if you performed the initial or repetitive BSI before the effective date of this AD using RR Alert NMSB Trent 1000 72-AK316, Revision 2, dated April 30, 2019, or earlier versions. \n\n(j) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, ECO Branch, FAA, has theauthority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (k)(1) of this AD. You may email your request to: [email protected]. \n\t(2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. \n\n(k) Related Information \n\n\n\t(1) For more information about this AD, contact Stephen Elwin, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7750; fax: 781-238-7236; email: [email protected]. \n\t(2) Refer to European Union Aviation Safety Agency (EASA) AD 2019-0099R2, dated September 6, 2019, for more information. You may examine the EASA AD in the AD docket on the internet at https://www.regulations.gov by searching for and locating it in Docket No. FAA-2020-0179. \n\n(l) 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 by this AD, unless the AD specifies otherwise. \n\t(i) Rolls-Royce plc (RR) Alert Non-Modification Service Bulletin Trent 1000 72-AK316, Revision 3, dated July 16, 2019. \n\t(ii) (Reserved) \n\t(3) For RR service information identified in this AD, contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, 15827 Blankenfelde-Mahlow, Germany; phone: +49 (0) 33 708 6 0; email: https://www.rolls-royce.com/contact-us.aspx. \n\t(4) You may view this service information at FAA, Engine and Propeller Standards \n\n((Page 13731)) \n\nBranch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781-238-7759. \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, email: [email protected], or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.