2018-13-07: Turbine Engine Compressor 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): 2018-13-07 Rolls-Royce plc: Amendment 39-19319; Docket No. FAA-2018- 0590; Product Identifier 2018-NE-24-AD. (a) Effective Date This AD is effective August 7, 2018. (b) Affected ADs None. (c) Applicability This AD applies to all Rolls Royce plc (RR) Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H turbofan engine models. (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 separations resulting in engine failures. We are 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) Inspect the IPC stage 1 rotor blades, at the applicable compliance times specified in paragraphs (g)(1)(i), (ii), or (iii) after the effective date of this AD, whichever comes first: (i) Within 30 days for the serial number IPC modules installed in the referenced serial number engines listed in Group 1 in Appendix 1 of RR Alert Non-Modification Service Bulletin (NMSB) Trent 1000 72-AK130, dated June 11, 2018, using the Accomplishment Instructions, paragraph 3.A.(1)(a), of RR Alert NMSB Trent 1000 72- AK130, dated June 11, 2018.(ii) Within 60 days for all IPC modules not listed in Group 1 in Appendix 1 of RR Alert NMSB Trent 1000 72-AK130, dated June 11, 2018, using the Accomplishment Instructions, paragraph 3.A.(1)(a), of RR Alert NMSB Trent 1000 72-AK130, dated June 11, 2018. Those serial number IPC modules specifically identified in Group 2 in Appendix 1 of RR Alert NMSB Trent 1000 72-AK130, dated June 11, 2018, do not require inspection. (iii) At the next engine shop visit, using the Accomplishment Instructions, paragraph 3.A.(2)(a), of RR Alert NMSB Trent 1000 72- AK130, dated June 11, 2018. (2) For IPC modules with 1,000 or more flight cycles, inspect the IPC stage 2 rotor blades and IPC stage 2 dovetail posts within 30 days of the effective date of this AD or at the next engine shop visit, whichever comes first. (i) For IPC stage 2 rotor blades and IPC stage 2 dovetail posts inspected on-wing, use Accomplishment Instructions, paragraphs 3.B.(1)(a) and 3.C.(1)(a), of RR Alert NMSB Trent 1000 72-AK130, dated June 11, 2018. (ii) For IPC stage 2 rotor blades and IPC stage 2 dovetail posts inspected in shop, use Accomplishment Instructions, paragraphs 3.B.(2)(a) and 3.C.(2)(a), of RR Alert NMSB Trent 1000 72-AK130, dated June 11, 2018. (3) For engines that are in an engine shop visit on the effective date of this AD, inspect IPC stage 1 rotor blades, IPC stage 2 rotor blades, and IPC stage 2 dovetail posts before returning the engine to service. (4) If any IPC stage 1 rotor blade, IPC stage 2 rotor blade, or an IPC shaft stage 2 dovetail post is found cracked during any inspection required by this AD, remove the part from service and replace the part with a part eligible for installation before further flight. (h) Definition 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 (lettered flanges). The separation of engine flanges solely for the purpose of transportation of the engine without subsequent engine maintenance does not constitute an engine shop visit. (i) Special Flight Permits (1) Special flight permits, as described in Section 21.197 and Section 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199), are subject to the requirements of paragraph (i)(1)(i) of this AD. (i) Operators who are prohibited from further flight due to an IPC stage 1 rotor blade, IPC stage 2 rotor blade, or an IPC stage 2 dovetail post being found cracked, may perform a one-time non- revenue ferry flight to a location where the engine can be removed from service. This ferry flight must be performed without passengers, involve non-extended operations (ETOPS), and consume no more than three flight cycles. (ii) Reserved. (2) Reserved. (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 (k)(1) 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 Kevin M. Clark, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7088; fax: 781-238-7199; email: [email protected]. (2) Refer to European Aviation Safety Agency (EASA) AD 2018- 0128, dated June 12, 2018, 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-2018-0590. (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, Initial issue, dated June 11, 2018. (ii) Reserved. (3) For service information identified in this AD, contact Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, England, 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 & Propeller Standards Branch, 1200 District Avenue, Burlington, [[Page 34761]] MA. For information on the availability of this material at the FAA, call 781-238-7759. (5) You may view this service information that is incorporated by reference 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.