Home / Agencies / DOT / 2026-11560
Final Rule

Airworthiness Directives; Airbus Helicopters

Agency
DOT
Document Number
2026-11560
Published
June 9, 2026
Effective Date
July 14, 2026

Abstract

The FAA is superseding Airworthiness Directive (AD) 2025-06-04 for all Airbus Helicopters Model AS350B, AS350B1, AS350B2, AS350B3, AS350BA, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, EC130B4, and EC130T2 helicopters. AD 2025-06-04 required repetitively inspecting the main gearbox (MGB) bevel wheel and the MGB magnetic plug for particles and performing corrective actions if applicable and prohibited installing an affected MGB unless certain requirements were met. Since the FAA issued AD 2025-06-04, the FAA determined that AD 2025-06-04 contains errors in the interval compliance times. This AD continues to require the actions of AD 2025-06-04 and corrects the interval compliance times. 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.

View Full Text on FederalRegister.gov →

Opens in new tab · federalregister.gov

Frequently Asked Questions

What is the 2026-11560 Federal Register document?
Document 2026-11560 is a Final Rule published by the Department of Transportation in the Federal Register on June 9, 2026, with an effective date of July 14, 2026. The FAA is superseding Airworthiness Directive (AD) 2025-06-04 for all Airbus Helicopters Model AS350B, AS350B1, AS350B2, AS350B3, AS350BA, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, EC130B4, and EC130T2 helicopters. AD 2025-06-04 required repetitively inspecting the main gearbox (MGB) bevel wheel and the MGB magnetic plug for particles and performing corrective actions if applicable and prohibited installing an affected MGB unless certain requirements were met. Since the FAA issued AD 2025-06-04, the FAA determined that AD 2025-06-04 contains errors in the interval compliance times. This AD continues to require the actions of AD 2025-06-04 and corrects the interval compliance times. The FAA is issuing this AD to address the unsafe condition on these products. View the original at https://www.federalregister.gov/documents/2026/06/09/2026-11560/airworthiness-directives-airbus-helicopters.
Is document 2026-11560 an economically significant rule?
No. Document 2026-11560 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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