FAA-2026-16507

Document Headings Document headings vary by document type but may contain the following: • the agency or agencies that issued and signed a document • the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to • the agency docket number / agency internal file number • the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Transportation Federal Aviation Administration • 14 CFR Part 39 • [Docket No. FAA-2026-4646; Project Identifier MCAI-2025-01763-R; Amendment 39-23435; AD 2026-16-05] • RIN 2120-AA64 AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model AS350B2 helicopters. 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. This AD requires performing a cut-off test of the rear rotor actuator valve and, depending on the results of the test, performing corrective actions. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective September 17, 2026. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of September 17, 2026. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA-2026-4646; 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 Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email:ADs@easa.europa.eu; website: easa.europa.eu. • 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. It is also available atregulations.gov under Docket No. FAA-2026-4646. FOR FURTHER INFORMATION CONTACT: Aryanna Sanchez, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (817) 222-4058; email: aryanna.t.sanchez@faa.gov. SUPPLEMENTARY INFORMATION: Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain Airbus Helicopters Model AS350B2 helicopters. The NPRM was published in the Federal Register on May 28, 2026 (91 FR 31673). The NPRM was prompted by an MCAI, issued by EASA, which is the Technical Agent for the Member States of the European Union. EASA issued EASA AD 2025-0263, dated November 26, 2025; corrected December 9, 2025 (EASA AD 2025-0263) (also referred to as the MCAI). The MCAI states that during maintenance on a helicopter, magnetization was observed on the solenoid valves for the three main servo-controls, the regulator block, and the tail servo-control. The MCAI also states that after further investigation, it was determined that diode 43D2 was no…

Fonte: Federal Register (federalregister.gov). Texto original em inglês. Conteúdo sanitizado por segurança.