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. 28, 2026. Document 2026-19729. Updated Nov. 5, 2026.

Open for public comment until Nov. 12, 2026. Comment on Regulations.gov

What it does

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS 365 N2, AS 365 N3, EC 155 B, EC 155 B1, SA 365 N, and SA 365 N1 helicopters. This proposed AD was prompted by gaps between the seals and engine cowling, which were found during an investigation related to an engine compartment fire. Gaps between the seals and engine cowling could cause inadequate sealing of the engine compartment firewalls leading to fire propagation between engine compartments and reduced effectiveness of the extinguishing agent. This proposed AD would require modifying the engine compartment firewalls by installing angle-brackets along the firewalls. 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

1019 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

Sept. 28, 2026 Final rule. Airworthiness Directives; Safran Helicopter Engines, S.A. Engines
Sept. 28, 2026 Final rule. Airworthiness Directives; Hélicoptères Guimbal Helicopters
Sept. 28, 2026 Final rule; request for comments. Airworthiness Directives; Costruzioni Aeronautiche Tecnam S.P.A. Airplanes
Sept. 28, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
Sept. 28, 2026 Final rule; request for comments. Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
Sept. 28, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
Sept. 28, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
Sept. 24, 2026 Supplemental notice of proposed rulemaking (SNPRM). Airworthiness Directives; Bombardier, Inc., Airplanes

Since then:

What happens next and when

The FAA must receive comments on this NPRM by November 12, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-19729
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	Sept. 28, 2026
Comments close	Nov. 12, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-11787

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