AD 2026-18-05

57780 Federal Register / Vol. 91, No. 175 / Friday, September 11, 2026 / Rules and Regulations (i) European Union Aviation Safety Agency (EASA) AD 2023–0099, dated May 11, 2023. (ii) [Reserved] (5) For EASA material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu . You may find this material on the EASA website at ad.easa.europa.eu . (6) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. (7) 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 August 31, 2026. Paul R. Bernado, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026–18602 Filed 9–10–26; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2026–4663; Project Identifier MCAI–2026–00208–T; Amendment 39–23460; AD 2026–18–05] RIN 2120–AA64 Airworthiness Directives; Dassault Aviation Airplanes AGENCY : Federal Aviation Administration (FAA), DOT. ACTION : Final rule. SUMMARY : The FAA is superseding Airworthiness Directive (AD) 2023–23– 06, which applied to certain Dassault Aviation Model FALCON 2000EX airplanes. AD 2023–23–06 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. Since the FAA issued AD 2023–23–06, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This AD continues to require certain actions in AD 2023–23–06 and requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products. DATES : This AD is effective October 16, 2026. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of October 16, 2026. The Director of the Federal Register approved the incorporation by reference of a certain other publication listed in this AD as of January 16, 2024 (88 FR 86029, December 12, 2023). ADDRESSES : AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2026–4663; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. Material Incorporated by Reference: • For European Union Aviation Safety Agency (EASA) material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. • You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. It is also available at regulations.gov under Docket No. FAA–2026–4663. FOR FURTHER INFORMATION CONTACT : Amanda Pieraccini, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516–228–7329; email: 9-AVS-AIR- BACO-COS@faa.gov. SUPPLEMENTARY INFORMATION : Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2023–23–06, Amendment 39–22608 (88 FR 86029, December 12, 2023) (AD 2023–23–06). AD 2023–23–06 applied to certain Dassault Aviation Model FALCON 2000EX airplanes. AD 2023–23–06 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA issued AD 2023–23–06 to address reduced structural integrity of the airplane. The NPRM was published in the Federal Register on June 30, 2026 (91 FR 39569). The NPRM was prompted by EASA AD 2026–0041, dated February 27, 2026 (EASA AD 2026–0041) (also referred to as the MCAI), issued by EASA, which is the Technical Agent for the Member States of the European Union. The MCAI states that new or more restrictive airworthiness limitations have been developed. In the NPRM, the FAA proposed to continue to require certain actions in AD 2023–23–06 and require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations, as specified in EASA AD 2026–0041. The FAA is issuing this AD to address the unsafe condition on these products. You may examine the MCAI in the AD docket at regulations.gov under Docket No. FAA–2026–4663. Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the cost. Conclusion These products have been approved by the civil aviation authority of another country and are approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with this State of Design Authority, that authority has notified the FAA of the unsafe condition described in the MCAI referenced above. The FAA reviewed the relevant data, considered any comments received, and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. Except for minor editorial changes, this AD is adopted as proposed in the NPRM. None of the changes will increase the economic burden on any operator. Material Incorporated by Reference Under 1 CFR Part 51 EASA AD 2026–0041 specifies procedures for new or more restrictive airworthiness limitations for airplane structures and safe life limits. This AD also requires EASA AD 2023–0100, dated May 11, 2023, which the Director of the Federal Register approved for incorporation by reference as of January 16, 2024 (88 FR 86029, December 12, 2023). This material is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. VerDate Sep<11>2014 15:47 Sep 10, 2026 Jkt 268001 PO 00000 Frm 00006 Fmt 4700 Sfmt 4700 E:\FR\FM\11SER1.SGM 11SER1 lotter on DSK8BHNXB4PROD with RULES1

57781 Federal Register / Vol. 91, No. 175 / Friday, September 11, 2026 / Rules and Regulations Costs of Compliance The FAA estimates that this AD affects 315 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: The FAA estimates the total cost per operator for the retained actions from AD 2023–23–06 to be $7,650 (90 work- hours × $85 per work-hour). The FAA has determined that revising the existing maintenance or inspection program takes an average of 90 work- hours per operator, although the agency recognizes that this number may vary from operator to operator. Since operators incorporate maintenance or inspection program changes for their affected fleet(s), the FAA has determined that a per-operator estimate is more accurate than a per-airplane estimate. Therefore, the FAA estimates the average total cost per operator for the new actions to be $7,650 (90 work- hours × $85 per work-hour). Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency’s authority. The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: General requirements. Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Will not affect intrastate aviation in Alaska, and (3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. 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 ■ 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] ■ 2. The FAA amends § 39.13 by: ■ a. Removing Airworthiness Directive (AD) 2023–23–06, Amendment 39– 22608 (88 FR 86029, December 12, 2023); and ■ b. Adding the following new AD: 2026–18–05 Dassault Aviation: Amendment 39–23460; Docket No. FAA–2026–4663; Project Identifier MCAI–2026–00208–T. (a) Effective Date This airworthiness directive (AD) is effective October 16, 2026. (b) Affected ADs This AD replaces AD 2023–23–06, Amendment 39–22608 (88 FR 86029, December 12, 2023) (AD 2023–23–06). (c) Applicability This AD applies to Dassault Aviation Model FALCON 2000EX airplanes, certificated in any category, with an original airworthiness certificate or original export certificate of airworthiness issued on or before January 15, 2026. (d) Subject Air Transport Association (ATA) of America Code 05, Time Limits/Maintenance Checks. (e) Unsafe Condition This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. The FAA is issuing this AD to address reduced structural integrity of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Retained Revision of the Existing Maintenance or Inspection Program, With a New Terminating Action This paragraph restates the requirements of paragraph (j) of AD 2023–23–06, with a new terminating action. For airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or before January 15, 2023: Except as specified in paragraph (h) of this AD, comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2023–0100, dated May 11, 2023 (EASA AD 2023–0100). Accomplishing the revision of the existing maintenance or inspection program required by paragraph (j) of this AD terminates the requirements of this paragraph. (h) Retained Exceptions to EASA AD 2023– 0100, With No Change This paragraph restates the exceptions specified in paragraph (k) of AD 2023–23–06, with no change. (1) This AD does not adopt the requirements specified in paragraphs (1) and (2) of EASA AD 2023–0100. (2) Paragraph (3) of EASA AD 2023–0100 specifies revising ‘‘the approved AMP’’ within 12 months after its effective date, but this AD requires revising the existing maintenance or inspection program, as applicable, within 90 days after January 16, 2024 (the effective date of AD 2023–23–06). (3) The initial compliance time for doing the tasks specified in paragraph (3) of EASA AD 2023–0100 is at the applicable ‘‘limitations’’ and ‘‘associated thresholds’’ as incorporated by the requirements of paragraph (3) of EASA AD 2023–0100, or within 90 days after January 16, 2024 (the effective date of AD 2023–23–06), whichever occurs later. (4) This AD does not adopt the provisions specified in paragraphs (4) and (5) of EASA AD 2023–0100. (5) This AD does not adopt the ‘‘Remarks’’ section of EASA AD 2023–0100. (i) Retained Provisions on Alternative Actions and Intervals, With a New Exception This paragraph restates the requirements of paragraph (l) of AD 2023–23–06, with a new exception. Except as required by paragraph (j) of this AD, after the maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions ( e.g., inspections), and intervals are allowed unless they are approved as specified in the provisions of the ‘‘Ref. Publications’’ section of EASA AD 2023–0100. (j) New Revision of the Existing Maintenance or Inspection Program Except as specified in paragraph (k) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, EASA AD 2026–0041, dated February 27, 2026 (EASA AD 2026– 0041). Accomplishing the revision of the existing maintenance or inspection program required by this paragraph terminates the requirements of paragraph (g) of this AD. (k) Exceptions to EASA AD 2026–0041 (1) This AD does not adopt the requirements specified in paragraphs (1) and (2) of EASA AD 2026–0041. (2) Paragraph (3) of EASA AD 2026–0041 specifies revising the approved aircraft maintenance program (AMP) within 12 VerDate Sep<11>2014 15:47 Sep 10, 2026 Jkt 268001 PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 E:\FR\FM\11SER1.SGM 11SER1 lotter on DSK8BHNXB4PROD with RULES1

57782 Federal Register / Vol. 91, No. 175 / Friday, September 11, 2026 / Rules and Regulations months after its effective date, but this AD requires revising the existing maintenance or inspection program, as applicable, within 90 days after the effective date of this AD. (3) The initial compliance time for doing the tasks specified in paragraph (3) of EASA AD 2026–0041 is at the applicable limitations and associated thresholds as incorporated by the requirements of paragraph (3) of EASA AD 2026–0041. (4) This AD does not adopt the provisions specified in paragraphs (4) and (5) of EASA AD 2026–0041. (5) This AD does not adopt the ‘‘Remarks’’ section of EASA AD 2026–0041. (l) New Provisions for Alternative Actions and Intervals After the existing maintenance or inspection program has been revised as required by paragraph (j) of this AD, no alternative actions ( e.g., inspections) and intervals are allowed unless they are approved as specified in the provisions of the ‘‘Ref. Publications’’ section of EASA AD 2026–0041. (m) Additional AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, International Validation 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 responsible Flight Standards 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 (n) of this AD and email to: AMOC@faa.gov . Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, International Validation Branch, FAA; or EASA; or Dassault Aviation’s EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA- authorized signature. (n) Additional Information For more information about this AD, contact Amanda Pieraccini, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516–228– 7329; email: 9-AVS-AIR-BACO-COS@faa.gov. (o) 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 this AD specifies otherwise. (3) The following material was approved for IBR on October 16, 2026. (i) European Union Aviation Safety Agency (EASA) AD 2026–0041, dated February 27, 2026. (ii) [Reserved] (4) The following material was approved for IBR on January 16, 2024 (88 FR 86029, December 12, 2023). (i) European Union Aviation Safety Agency (EASA) AD 2023–0100, dated May 11, 2023. (ii) [Reserved] (5) For EASA material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu . (6) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. (7) 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 August 31, 2026. Paul R. Bernado, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026–18601 Filed 9–10–26; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2026–2287; Project Identifier MCAI–2025–01208–E; Amendment 39–23459; AD 2026–18–04] RIN 2120–AA64 Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines AGENCY : Federal Aviation Administration (FAA), DOT. ACTION : Final rule. SUMMARY : The FAA is superseding Airworthiness Directive (AD) 2020–06– 16 for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model RB211 Trent 768–60, 772–60, and 772B–60 engines. AD 2020–06–16 required initial and repetitive ultrasonic inspections (UIs) of the affected low-pressure compressor (LPC) blades and, depending on the results of the UIs, replacement with a part eligible for installation. Since the FAA issued AD 2020–06–16, RRD issued updated service material providing improvements to the ultrasonic inspection procedures and updated initial inspection compliance times. This AD requires initial and repetitive UIs of the affected LPC blades for sub-surface anomalies and, depending on the results of the UIs, replacement with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products. DATES : This AD is effective October 16, 2026. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of October 16, 2026. ADDRESSES : AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2026–2287; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. Material Incorporated by Reference: • For European Union Aviation Safety Agency (EASA) material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu; website: easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. • 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. It is also available at regulations.gov under Docket No. FAA– 2026–2287. FOR FURTHER INFORMATION CONTACT : Alexis Whitaker, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (516) 228–7309; email: alexis.j.whitaker@ faa.gov . SUPPLEMENTARY INFORMATION : Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2020–06–16, Amendment 39–19885 (85 FR 17738, March 31, 2020) (AD 2020–06–16). AD 2020–06–16 applied to certain RRD Model RB211 Trent 768–60, 772–60, and 772B–60 engines. AD 2020–06–16 required initial and repetitive UIs of the affected LPC blades and, depending on the results of the UIs, replacement with a part eligible for installation. The FAA VerDate Sep<11>2014 15:47 Sep 10, 2026 Jkt 268001 PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 E:\FR\FM\11SER1.SGM 11SER1 lotter on DSK8BHNXB4PROD with RULES1