Data / Federal rules / 2025-19554
Airworthiness Directives; Airbus Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on October 15, 2025. It took effect on October 30, 2025. Comments closed on December 1, 2025.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model H160-B helicopters. This AD was prompted by a report of broken main gearbox (MGB) right hand (RH) center and rear rail support assemblies. This AD requires repetitively inspecting the MGB RH and left hand (LH) center rail support for cracks and, depending on the results of these inspections, accomplishing corrective actions. This AD prohibits the installation of certain part-numbered MGB support assemblies unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-19554
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- October 15, 2025
- Takes effect
- October 30, 2025
- Comments due
- December 1, 2025
- Dates
- This AD is effective October 30, 2025.
- Docket
- Docket No. FAA-2025-3431; Project Identifier MCAI-2025-01291-R; Amendment 39-23170; AD 2025-20-17
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 4
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in October 2025
Read from the Federal Register API, last updated 2026-10-24. 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.