Airworthiness Directives; Airbus Helicopters

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register June 16, 2026. Document 2026-12048. Updated Nov. 9, 2026.

What it does

The FAA is superseding Airworthiness Directive (AD) 2023-01-04 for all Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. AD 2023-01-04 required, for helicopters with certain part- numbered tail rotor head (TRH) spider pitch change units installed, inspecting the pitch change spider nut (nut) for correct installation; marking a 2 to 5 mm wide black paint index mark and repetitively inspecting the alignment of the marking; and performing additional inspections and corrective actions if necessary. Since the FAA issued AD 2023-01-04, new or more restrictive airworthiness limitations were issued, which terminated the requirement for the repetitive inspections of the black paint index marking. This AD requires the same actions as AD 2023-01-04, except for the repetitive black paint index marking inspections and prohibits installing certain parts unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition 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

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

June 16, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
June 16, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
June 16, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
June 15, 2026 Final rule. Airworthiness Directives; Bombardier, Inc., Airplanes
June 15, 2026 Final rule. Airworthiness Directives; Airbus SAS Airplanes
June 15, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
June 15, 2026 Final rule; request for comments. Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
June 9, 2026 Final rule. Airworthiness Directives; Airbus Helicopters

Since then:

What happens next and when

This AD is effective July 21, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-12048
Action	Final rule.
Agencies	Transportation Department; Federal Aviation Administration
Published	June 16, 2026
Effective date	July 21, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2025-5387

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