Data / Federal rules / 2025-03619
Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on March 7, 2025. It took effect on March 24, 2025. Comments closed on April 21, 2025.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+/EC635T2+, EC135T3, MBB-BK 117 C-2, MBB-BK 117 D-2, and MBB-BK 117 D-3 helicopters. This AD was prompted by reports of malfunctioning emergency fuel shut-off switches on the warning unit. This AD requires inspecting certain switches on the warning units, and depending on the results, replacing or repairing the warning unit. This AD also allows installing certain warning units provided certain requirements are met. These actions are specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-03619
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- March 7, 2025
- Takes effect
- March 24, 2025
- Comments due
- April 21, 2025
- Dates
- This AD is effective March 24, 2025.
- Docket
- Docket No. FAA-2025-0212; Project Identifier MCAI-2024-00778-R; Amendment 39-22968; AD 2025-04-10
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 6
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in March 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.