2023-17-11: Turbine Engine Compressor Section

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: 2023-17-11 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-22537; Docket No. FAA-2023-1808; Project Identifier MCAI-2023-00906-E. (a) Effective Date This airworthiness directive (AD) is effective September 20, 2023. (b) Affected ADs None. (c) Applicability This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) Model BR700-715A1-30, BR700-715B1-30, and BR700-715C1-30 engines. (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition This AD was prompted by reports of malformed scallop edge geometry and surface conditions at the front flange scallops of affected low-pressure compressor (LPC) booster rotors. The FAA is issuing this AD to prevent failure of the LPC booster rotor. The unsafe condition, if not addressed, could result in release of high-energy debris, with consequent engine in-flight shutdown, and reduced control of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Except as specified in paragraphs (h) and (i) of this AD: Perform all required actions within the compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2023-0152, dated July 25, 2023 (EASA AD 2023-0152). (h) Exceptions to EASA AD 2023-0152 (1) Where EASA AD 2023-0152 requires compliance from its effective date, this AD requires using the effective date of this AD. (2) This AD does not adopt the compliance times specified for the initial fluorescent penetrant inspection (FPI) in paragraph (1) and Table 1 of EASA AD 2023-0152. Instead, this AD requires the initial FPI within 150 engine flight cycles after the effective date of this AD. (3) Where paragraph (1) of EASA AD 2023-0152 specifies "in accordance with the instructions of EM task 72-38-12-200-801" this AD requires replacing those words with "in accordance with the instructions of EM task 72-38-18-200-801 or equivalent FAA approved procedures." (4) Where paragraphs (2) and (3) of EASA AD 2023-0152 specify to contact RRD for approved corrective action(s) and accomplish those actions accordingly, this AD requires replacement of the LPC booster rotor. In lieu of replacement of the affected LPC booster rotor, operators may repair the affected LPC booster rotor using a method approved by the Manager, International Validation Branch, FAA; or EASA; or RRD's EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature. (5) Where the service information referenced in EASA AD 2023-0152 specifies to reject the engine if a crack is found, this AD requires replacement or repair of the LPC booster rotor. (6) This AD does not adopt the Remarks paragraph of EASA AD 2023-0152. (i) Reporting Requirement Although the service information referenced in EASA AD 2023-0152 specifies to submit the Accomplishment Forms, Parts A and B, to the manufacturer, this AD does not include that requirement. If operators elect to perform the optional terminating action specified in Part C of the service information referenced in EASA AD 2023-0152, this AD requires submission of the Part C Accomplishment Form and photographic information to the manufacturer. (j) 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 International Validation Branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: ANE-AD-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. (k) Additional Information For more information about this AD, contact Sungmo Cho, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238-7241; email: sungmo.d.cho@faa.gov. (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference 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) European Union Aviation Safety Agency AD 2023-0152, dated July 25, 2023. (ii) [Reserved] (3) For EASA AD 2022-0252, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu. You may find EASA AD 2022-0252 on the EASA website at ad.easa.europa.eu. (4) You may view this service information 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 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, email: fr.inspection@nara.gov, or go to: www.archives.gov/federal-register/cfr/ibr-locations.html. Issued on August 25, 2023. Victor Wicklund, Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2023-19164 Filed 8-31-23; 4:15 pm]BILLING CODE 4910-13-P