Data / Federal rules / 2025-17387
Airworthiness Directives; Leonardo S.p.A. Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on September 10, 2025. It took effect on September 25, 2025. Comments closed on October 27, 2025.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.A. Model A109E, A109S, AW109SP, A119, and AW119 MKII helicopters. This AD was prompted by a report that certain manufacturer maintenance instructions for swashplate assembly installation specified incorrect torque values for certain swashplate nuts. This AD requires repetitively inspecting certain swashplate nuts for cracks, fretting, or slippage marks and, depending on the results, performing corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-17387
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- September 10, 2025
- Takes effect
- September 25, 2025
- Comments due
- October 27, 2025
- Dates
- This AD is effective September 25, 2025.
- Docket
- Docket No. FAA-2025-2271; Project Identifier MCAI-2025-01166-R; Amendment 39-23128; AD 2025-18-01
- 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 September 2025
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.