Home / Agencies / DOT / 2026-16047
Final Rule

Airworthiness Directives; Airbus Helicopters

Agency
DOT
Document Number
2026-16047
Published
August 6, 2026
Effective Date
September 10, 2026

Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, EC130B4, and EC130T2 helicopters. This AD was prompted by reports of an incorrectly installed engine flange on the main gear box (MGB) engine coupling. This AD requires inspecting the MGB engine coupling for correct installation and, depending on the results, corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.

Federal Register Source

This document is published by the Office of the Federal Register, National Archives and Records Administration. Access the full regulatory text, preamble, and docket comments below.

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Frequently Asked Questions

What is the 2026-16047 Federal Register document?
Document 2026-16047 is a Final Rule published by the Department of Transportation in the Federal Register on August 6, 2026, with an effective date of September 10, 2026. The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, EC130B4, and EC130T2 helicopters. This AD was prompted by reports of an incorrectly installed engine flange on the main gear box (MGB) engine coupling. This AD requires inspecting the MGB engine coupling for correct installation and, depending on the results, corrective actions. The FAA is issuing this AD to address the unsafe condition on these products. View the original at https://www.federalregister.gov/documents/2026/08/06/2026-16047/airworthiness-directives-airbus-helicopters.
Is document 2026-16047 an economically significant rule?
No. Document 2026-16047 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.

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