1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2026-20-11 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-23484; Docket No. FAA-2026-4648; Project Identifier MCAI-2025-01834-E. (a) Effective Date This airworthiness directive (AD) is effective November 17, 2026. (b) Affected ADs None. (c) Applicability This AD applies to all Rolls-Royce Deutschland Ltd & Co KG Model RB211 Trent 768-60, 772-60, and 772B-60 engines. (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition This AD was prompted by a report that a batch of low-pressure compressor blades were exposed to a non-conforming repair and are more prone to cracking due to a deviation from the approved blade configuration design. The FAA is issuing this AD to prevent blade cracking. The unsafe condition, if not addressed, could lead to multiple structural failures of the affected parts, which could result in increased risk of in-flight shutdown, engine fire, and uncontained high-energy debris release. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Except as specified in paragraph (h) of this AD: Perform all required actions within the compliance times specified in, and in accordance with, European Union Aviation Safety Agency AD 2025-0288R1, dated June 26, 2026 (EASA AD 2025-0288R1). (h) Exceptions to EASA AD 2025-0288R1 (1) Where EASA AD 2025-0288R1 refers to its effective date, this AD requires using the effective date of this AD. (2) Where EASA AD 2025-0288R1 refers to July 22, 2024 (the effective date of EASA AD 2024-0130), this AD requires using the effective date of this AD. (3) This AD does not adopt the "Remarks" paragraph of EASA AD 2025-0288R1. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, AIR-520 Continued Operational Safety 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 AIR-520 Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (j) of this AD and email 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. (j) Additional Information For more information about this AD, contact Alexis Whitaker, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (516) 228-7309; email:
[email protected] . (k) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2025-0288R1, dated June 26, 2026. (ii) [Reserved] (3) For EASA material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email:
[email protected]; website: easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call (817) 222-5110. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email
[email protected]. Issued on September 30, 2026. Brian Knaup, Acting Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2026-20869 Filed 10-9-26; 8:45 am]BILLING CODE 4910-13-P