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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: a. Removing Airworthiness Directive 2019-05-02, Amendment 39-19584 (84 FR 8799, March 12, 2019); and b. Adding the following new airworthiness directive: 2025-05-04 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-22976; Docket No. FAA-2025-0333; Project Identifier MCAI-2020-01208-E. (a) Effective Date This airworthiness directive (AD) is effective April 1, 2025. (b) Affected ADs This AD replaces AD 2019-05-02, Amendment 39-19584 (84 FR 8799, March 12, 2019) (AD 2019-05-02). (c) Applicability This AD applies to Rolls-Royce Deutschland Ltd & Co KG (type certificate previously held by Rolls-Royce plc) Model RB211-Trent 970-84 and RB211-Trent 972-84 engines with an installed drains mast, part number (P/N) KH31996 or FW29847, except those with Rolls-Royce modification 72-AK047 embodied in production. (d) Subject Joint Aircraft System Component (JASC) Code 7170, Engine Drains. (e) Unsafe Condition This AD was prompted by cracks found in the transition duct area of the drains mast. The FAA is issuing this AD to detect and correct cracks in the transition duct area of the drains mast. The unsafe condition, if not addressed, could result in engine fire and damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Within 24 months after the effective date of this AD, modify the engine in accordance with Rolls-Royce Alert Service Bulletin RB.211-72-AK047, Revision 2, dated August 17, 2020. (h) 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 (i) of this AD and email to: AMOC@faa.gov . (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. (i) Additional Information For more information about this AD, contact Barbara Caufield, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238-7146; email: barbara.caufield@faa.gov . (j) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) 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) Rolls-Royce Alert Service Bulletin RB.211-72-AK047, Revision 2, dated August 17, 2020. (ii) [Reserved] (3) For Rolls-Royce Deutschland Ltd & Co KG material identified in this AD, contact Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, DE24 8BJ, United Kingdom; phone: +44 (0)1332 242424; fax: +44 (0)1332 249936; website: rolls-royce.com/contact-us.aspx . (4) You may view this material at the FAA, 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 fr.inspection@nara.gov . Issued on March 11, 2025. Peter A. White, Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2025-04214 Filed 3-14-25; 8:45 am]BILLING CODE 4910-13-P
