Data / Federal rules / 2025-18083
Airworthiness Directives; Airbus Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on September 18, 2025. It took effect on October 23, 2025.
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What the agency says
The FAA is superseding Airworthiness Directive (AD) 2020-24-07 for certain Airbus Helicopters Model AS350B3, EC130B4, and EC130T2 helicopters. AD 2020-24-07 required modifying and inspecting the throttle twist grip (twist grip). Since the FAA issued AD 2020-24-07, there have been reports of the engine remaining in idle when the twist grip was turned to the "FLIGHT" mode. This AD retains the actions required by AD 2020-24-07 and adds a modification that constitutes terminating action for the repetitive inspections. This AD also expands the helicopter applicability, provides additional requirements for certain helicopters, and prohibits installing affected microswitches or an affected twist grip with the affected microswitch. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-18083
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- September 18, 2025
- Takes effect
- October 23, 2025
- Dates
- This AD is effective October 23, 2025.
- Docket
- Docket No. FAA-2025-1108; Project Identifier MCAI-2025-00428-R; Amendment 39-23140; AD 2025-18-13
- 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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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 2026-10-24. 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.