Data / Federal rules / 2024-28831
Airworthiness Directives; Airbus Helicopters
The Federal Aviation Administration published this proposed rule in the Federal Register on December 10, 2024. Comments closed on January 24, 2025.
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What the agency says
The FAA proposes to supersede Airworthiness Directive (AD) 2021-09-14, which applies to certain Airbus Helicopters (Airbus) Model SA330J helicopters. AD 2021-09-14 requires repetitively inspecting for a gap between the main gearbox (MGB) oil cooling fan assembly (fan) rotor blade and the upper section of the guide vane bearing housing, installing improved MGB fan rotor shaft bearings, and repetitively inspecting the improved MGB fan rotor shaft bearings. Since the FAA issued AD 2021-09-14, Airbus has developed modifications to the components of the MGB fan bearing assembly and issued new material regarding these modifications. This proposed AD would retain the actions required by AD 2021-09-14 and would also require installing the improved MGB fan rotor bearing assembly, which would constitute terminating action for the repetitive inspections. 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
- 2024-28831
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- December 10, 2024
- Comments due
- January 24, 2025
- Dates
- The FAA must receive comments on this NPRM by January 24, 2025.
- Docket
- Docket No. FAA-2024-2552; Project Identifier MCAI-2022-01243-R
- 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 December 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.