2019-16-14: Turbine Engine Compressor Section

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends part 39 of the Federal Aviation Regulations (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 removing airworthiness directive (AD) 2018-25-01, Amendment 39-19511 (83 FR 62694, December 6, 2018), and adding the following new AD: 2019-16-14 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-19717; Docket No. FAA-2019-0528; Product Identifier 2018-NE-24-AD. (a) Effective Date This AD is effective September 11, 2019. (b) Affected ADs This AD replaces AD 2018-25-01, Amendment 39-19511 (83 FR 62694, December 6, 2018). (c) Applicability This AD applies to all Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent 1000-A, Trent 1000-AE, Trent 1000-C, Trent 1000-CE, Trent 1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H turbofan model engines. (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition This AD was prompted by reports of intermediate-pressure compressor (IPC) rotor blade cracks, which could lead to rotor blade separations resulting in engine failures. The FAA is issuing this AD to prevent failure of the IPC. The unsafe condition, if not addressed, could result in failure of one or more engines, loss of thrust control, and loss of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) Within 15 days of the effective date of this AD, or within the compliance times specified in the Accomplishment Instructions, Table 1, of Rolls-Royce plc (RR) Alert Non-Modification Service Bulletin (NMSB) Trent 1000 72-AK130, Revision 4, dated March 4, 2019 (``RR Alert NMSB Trent 100 72-AK130''), whichever occurs later, perform an on-wing inspection of the IPC stage 1 rotor (R1) blades in accordance with the Accomplishment Instructions, paragraph 3.A.(1), of RR Alert NMSB Trent 1000 72-AK130. (2) Thereafter, repeat the on-wing inspections of the IPC R1 blades using the Accomplishment Instructions, paragraph 3.A.(1), and within the compliance times specified in the Accomplishment Instructions, Table 1, of RR Alert NMSB Trent 1000 72-AK130. (3) Within 15 days of the effective date of this AD, or before exceeding the applicable threshold defined in the Accomplishment Instructions, Table 2 or Table 3, of RR Alert NSMB 72-AK130, whichever occurs later, perform an on-wing inspection of the IPC stage 2 rotor (R2) blades and IPC shaft stage 2 dovetail posts in accordance with the Accomplishment Instructions, paragraphs 3.B.(1) and 3.C.(1), of RR Alert NMSB Trent 1000 72-AK130. (4) After performing the inspection in paragraph (g)(3) of this AD, repeat the on-wing inspections of IPC R2 blades and IPC shaft stage 2 dovetail posts using paragraphs 3.B.(1) and 3.C.(1) of RR Alert NMSB Trent 1000 72-AK130 and within the compliance times specified in the Accomplishment Instructions, Table 2 and Table 3, of RR Alert NMSB Trent 1000 72-AK130. (5) For any on-wing inspection required by paragraphs (g)(1) through (4) of this AD, provided the stated thresholds and intervals are not exceeded, you may substitute: (i) An in-shop inspection of an engine or module performed in accordance with the instructions of the Accomplishment Instructions, paragraphs 3.A.(2), 3.B.(2), and 3.C.(2) of the RR Alert NMSB Trent 1000 72-AK130, Revision 4, dated March 4, 2019; or (ii) An in-shop piece part inspection during refurbishment in accordance with the Accomplishment Instructions, paragraphs 3.B.(2)(f)(vi), 3.B.(2)(g)(v), 3.B.(3)(d)(iii) of RR NMSB Trent 1000 72-K132, Revision 2, dated March 26, 2019. (6) If any IPC R1blade, IPC R2 blade, or IPC shaft stage 2 dovetail post is found cracked during any inspection (on-wing or [[Page 44686]] in-shop) required by this AD, remove the cracked part from service and replace with a part eligible for installation before further flight. (h) Inspection After Operation Under Asymmetric Power As of the effective date of this AD, before the next flight after each occurrence where engine operation in asymmetric power conditions was sustained for more than 30 minutes at less than 25,000 feet, either resulting from engine power reduction or from engine in-flight shut-down (IFSD), inspect the IPC R1 blades, the IPC R2 blades, and the IPC shaft stage 2 dovetail posts in accordance with the Accomplishment Instructions, paragraphs 3.A.(1), 3.B.(1), and 3.C.(1), of RR Alert NMSB Trent 1000 72-AK130, Revision 4, dated March 4, 2019, on the engine that did not experience the power reduction or IFSD installed on the airplane. (i) Credit for Previous Actions You may take credit for the inspections required by paragraphs (g)(1) and (3) of this AD if you performed these inspections before the effective date of this AD using RR Alert NMSB Trent 1000 72- AK130, Revision 3, dated January 10, 2019, or earlier revisions. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO Branch, FAA, has the authority 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 (l) of this AD. You may email your request to: [email protected]. (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. (k) Related Information (1) For more information about this AD, contact Dorie Resnik, Aerospace Engineer, Boston ACO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7693; fax: 781-238-7199; email: [email protected]. (2) Refer to European Union Aviation Safety Agency (EASA) AD 2019-0075, dated March 29, 2019, for more information. You may examine the EASA AD in the AD docket on the internet at http://www.regulations.gov by searching for and locating it in Docket No. FAA-2019-0528. (l) 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 plc (RR) Alert Non-Modification Service Bulletin (NMSB) Trent 1000 72-AK130, Revision 4, dated March 4, 2019. (ii) RR NMSB Trent 1000 72-K132, Revision 2, dated March 26, 2019. (3) For RR service information identified in this AD, contact Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, United Kingdom, DE24 8BJ; phone: 011-44-1332-242424; fax: 011-44- 1332-249936; email: royce.com">[email protected]; internet: https://customers.rolls-royce.com/public/rollsroycecare. (4) You may view this service information at FAA, Engine and Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781-238-7759. (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.