Data / Federal rules / 2026-16641
Airworthiness Directives; Airbus Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on August 14, 2026. It took effect on September 18, 2026.
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What the agency says
The FAA is superseding Airworthiness Directive (AD) 2023-25- 14, which applied to certain Airbus Helicopters Model EC130T2 helicopters. AD 2023-25-14 revised the procedures for inspecting the vibration level on the tail rotor drive shaft and, depending on these results, required replacing certain parts. Since the FAA issued AD 2023-25-14, the manufacturer developed a modification of the rear drive shaft, sliding flange, and equipped splined sleeve. This AD requires installing this modification and repetitively inspecting the vibration level of the tail rotor drive shaft. This AD also prohibits the installation of certain parts and prohibits the performance of a balance correction unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-16641
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- August 14, 2026
- Takes effect
- September 18, 2026
- Dates
- This AD is effective September 18, 2026.
- Docket
- Docket No. FAA-2026-4644; Project Identifier MCAI-2024-00418-R; Amendment 39-23440; AD 2026-16-10
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 3
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| Airworthiness Directives; Airbus Helicopters 2026-21387 | Proposed rule | Oct 19 |
Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in August 2026
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.