Airworthiness Directives; Airbus Helicopters

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register March 9, 2026. Document 2026-04526. Updated Nov. 14, 2026.

What it does

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS 350B2, AS 350B3, EC120B, and EC 130 B4 helicopters. This proposed AD was prompted by a short-circuit due to foreign object debris (FOD) or dust inside the lighting and ancillaries control unit (LACU). This proposed AD would require repetitively cleaning and inspecting the affected LACU for FOD. Depending on the configuration of your helicopter, this proposed AD would also require modifying the emergency floatation system (EFS) activation switches and revising the existing rotorcraft flight manual (RFM) for your helicopter, which would constitute terminating action for the proposed repetitive cleaning and inspection requirements. Additionally, this proposed AD would prohibit installing an affected LACU on any helicopter 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

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

Since then:

What happens next and when

The FAA must receive comments on this NPRM by April 23, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-04526
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	March 9, 2026
Comments close	April 23, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-2292

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