2026-16-05: Hydraulic power system

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: 2026-16-05 Airbus Helicopters: Amendment 39-23435; Docket No. FAA-2026-4646; Project Identifier MCAI-2025-01763-R. (a) Effective Date This airworthiness directive (AD) is effective September 17, 2026. (b) Affected ADs None. (c) Applicability This AD applies to all Airbus Helicopters Model AS350B2 helicopters as specified in European Union Aviation Safety Agency AD 2025-0263, dated November 26, 2025; corrected December 9, 2025 (EASA AD 2025-0263). (d) Subject Joint Aircraft System Component (JASC) Code 2900, Hydraulic power system. (e) Unsafe Condition This AD was prompted by a report of magnetization on the solenoid valves for the three main servo-controls, the regulator block, and the tail servo-control due to a diode not properly installed in the hydraulic circuit. The FAA is issuing this AD to prevent loss of the efficiency of the yaw load compensator and of hydraulic assistance for the three main servo-controls and the tail servo-control. The unsafe condition, if not addressed, could result in reduced control of the helicopter. (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: Comply with all required actions and compliance times specified in, and in accordance with, EASA AD 2025-0263. (h) Exceptions to EASA AD 2025-0263 (1) Where EASA AD 2025-0263 refers to its effective date, this AD requires using the effective date of this AD. (2) Where EASA AD 2025-0263 requires compliance in terms of flight hours, this AD requires using hours' time-in-service. (3) Where the material referenced in EASA AD 2025-0263 specifies "remove the diode 43D2", this AD requires replacing that text with "remove the diode 43D2 from service". (4) This AD does not adopt the "Remarks" section of EASA AD 2025-0263. (i) No Reporting Requirement Although the material referenced in EASA AD 2025-0263 specifies to submit certain information to the manufacturer, this AD does not require that action. (j) Alternative Methods of Compliance (AMOCs) (1) 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 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: 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 Aryanna Sanchez, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (817) 222-5110; email: aryanna.t.sanchez@faa.gov. (l) 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 2025-0263, dated November 26, 2025; corrected December 9, 2025. (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: ADs@easa.europa.eu; website: easa.europa.eu. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 10101 Hillwood Parkway, Fort Worth, TX 76177. 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, the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email fr.inspection@nara.gov. Issued on July 30, 2026. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2026-16507 Filed 8-12-26; 8:45 am]BILLING CODE 4910-13-P