Data / Federal rules / 2024-25615
Airworthiness Directives; Airbus Helicopters
The Federal Aviation Administration published this proposed rule in the Federal Register on November 5, 2024. Comments closed on December 20, 2024.
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What the agency says
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters (Airbus) Model AS350B, AS350B1, AS350B2, AS350B3, AS350BA, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, EC130B4, and EC130T2 helicopters. This proposed AD was prompted by a manufacturer assessment that determined additional actions are necessary to improve particle detection for main gearboxes (MGBs) with certain planet gear bearings installed. This proposed AD would require repetitively inspecting the MGB bevel wheel for the presence of particles, repetitively inspecting the MGB magnetic plug for particles, and prohibit installing an affected MGB unless certain requirements are met. These actions are specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2024-25615
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- November 5, 2024
- Comments due
- December 20, 2024
- Dates
- The FAA must receive comments on this NPRM by December 20, 2024.
- Docket
- Docket No. FAA-2024-2419; Project Identifier MCAI-2023-00366-R
- 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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|---|---|---|
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| Airspace Designations; Incorporation by Reference Amendment of FAA Order JO 7400.11M 2026-21422 | Final rule | Oct 20 |
| 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 November 2024
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.