Data / Federal rules / 2026-11560
Airworthiness Directives; Airbus Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on June 9, 2026. It took effect on July 14, 2026.
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What the agency says
The FAA is superseding Airworthiness Directive (AD) 2025-06-04 for all Airbus Helicopters Model AS350B, AS350B1, AS350B2, AS350B3, AS350BA, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, EC130B4, and EC130T2 helicopters. AD 2025-06-04 required repetitively inspecting the main gearbox (MGB) bevel wheel and the MGB magnetic plug for particles and performing corrective actions if applicable and prohibited installing an affected MGB unless certain requirements were met. Since the FAA issued AD 2025-06-04, the FAA determined that AD 2025-06-04 contains errors in the interval compliance times. This AD continues to require the actions of AD 2025-06-04 and corrects the interval compliance times. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-11560
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- June 9, 2026
- Takes effect
- July 14, 2026
- Dates
- This AD is effective July 14, 2026.
- Docket
- Docket No. FAA-2025-5032; Project Identifier AD-2025-01042-R; Amendment 39-23373; AD 2026-12-03
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 5
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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 June 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.