Data / Federal rules / 2025-23101
Airworthiness Directives; Airbus Helicopters
The Federal Aviation Administration published this proposed rule in the Federal Register on December 17, 2025. Comments closed on February 2, 2026.
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What the agency says
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS355E, AS 355-F, AS 355-F1, AS355F2, AS355N, and AS355NP helicopters. This proposed AD was prompted by a report of a structural crack in the vertical attachment spar of the tail fin. This proposed AD would require repetitive inspections of certain vertical upper fin spars and, depending on the results, corrective action. This proposed AD would also prohibit installing certain upper fin assemblies. The FAA is proposing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-23101
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- December 17, 2025
- Comments due
- February 2, 2026
- Dates
- The FAA must receive comments on this NPRM by February 2, 2026.
- Docket
- Docket No. FAA-2025-5039; Project Identifier MCAI-2024-00426-R
- 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 December 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.