Airworthiness Directives; Airbus Helicopters

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Sept. 1, 2026. Document 2026-17840. Updated Nov. 6, 2026.

What it does

The FAA proposes to supersede Airworthiness Directive (AD) 2025-08-06, which applies to certain Airbus Helicopters Model SA330J helicopters. AD 2025-08-06 requires repetitively inspecting for a gap between the main gearbox (MGB) oil cooling fan assembly rotor blade and the upper section of the guide vane bearing housing, replacing the MGB fan rotor bearings with serviceable bearings if necessary, and at a later compliance time replacing the MGB fan rotor bearing assembly with an improved MGB fan rotor bearing assembly, which constitutes terminating action for the repetitive inspections. Since the FAA issued AD 2025-08-06, the FAA has determined that the compliance time for installing the improved MGB fan rotor bearing assembly should be extended. This proposed AD would continue to require the actions in AD 2025-08-06 and would increase the compliance time for installing the improved MGB fan rotor bearing assembly. This proposed AD would also prohibit installing any MGB fan rotor bearings and any MGB fan rotor bearing assembly, unless certain requirements are met. The FAA is proposing this AD to address the unsafe condition on these products.

The Federal Aviation Administration's summary, as published in the Federal Register.

What it would change

1 part of Title 14 of the Code of Federal Regulations:

14 CFR 39

Before this

969 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

Aug. 28, 2026 Final rule. Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
Aug. 28, 2026 Final rule; request for comments. Airworthiness Directives; Bell Textron Canada Limited Helicopters
Aug. 28, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Embraer S.A. Airplanes
Aug. 28, 2026 Final rule; request for comments. Airworthiness Directives; Lycoming Engines
Aug. 28, 2026 Final rule. Airworthiness Directives; Various Helicopters
Aug. 28, 2026 Final rule. Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
Aug. 28, 2026 Final rule. Airworthiness Directives; Leonardo S.p.A. Helicopters
Aug. 27, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes

Since then:

What happens next and when

The FAA must receive comments on this NPRM by October 16, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-17840
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	Sept. 1, 2026
Comments close	Oct. 16, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-8790

Source: the Federal Register (public domain). The document in the Federal Register