Airworthiness Directives; Airbus Helicopters

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Oct. 1, 2026. Document 2026-20098. Updated Nov. 5, 2026.

What it does

The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters. This AD was prompted by the determination that the tail rotor drive fan wheels (fan wheels) and the impeller second stage have been incorrectly identified during production. This AD requires verifying the serial number and amendment of the log cards of the affected parts, and depending on the findings, performing a one-time borescope inspection to verify consistency between the log cards and the affected parts. Depending on the results of the inspection, this AD requires replacing or re-identifying certain parts. This AD also prohibits the installation of certain fan wheels and impeller second stages on any helicopter. The FAA is issuing this AD to address the unsafe conditions on these products.

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

What changed in the regulation

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

14 CFR 39

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The Federal Aviation Administration has published 482 final rules in 2026 so far, compared with 518 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

Before this

1034 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

Oct. 1, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
Oct. 1, 2026 Final rule. Airworthiness Directives; Airbus SAS Airplanes
Oct. 1, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
Oct. 1, 2026 Final rule; request for comments. Airworthiness Directives; Leonardo S.p.a. Helicopters
Oct. 1, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Embraer S.A. Airplanes
Sept. 30, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Airbus Helicopters
Sept. 30, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Vulcanair S.p.A. Airplanes
Sept. 30, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters

Since then:

What happens next and when

This AD is effective November 5, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-20098
Action	Final rule.
Agencies	Transportation Department; Federal Aviation Administration
Published	Oct. 1, 2026
Effective date	Nov. 5, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-4657

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