Data / Federal rules / 2025-07111
Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
The Federal Aviation Administration published this proposed rule in the Federal Register on April 25, 2025. Comments closed on June 9, 2025.
SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.
What the agency says
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH (AHD) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC635T2+, and EC135T3 helicopters. This proposed AD was prompted by reports of ruptured and deformed flexible couplings. This proposed AD would require inspecting the axial displacement of the tail rotor driveshaft and, depending on the results, taking corrective actions including inspecting the flexible couplings. This proposed AD would also prohibit installing a tail rotor drive shaft unless certain procedures are followed. 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
- 2025-07111
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- April 25, 2025
- Comments due
- June 9, 2025
- Dates
- The FAA must receive comments on this NPRM by June 9, 2025.
- Docket
- Docket No. FAA-2025-0629; Project Identifier MCAI-2023-01183-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
Other documents from the Federal Aviation Administration
| Document | Type | Published |
|---|---|---|
| Airworthiness Directives; The Boeing Company Airplanes; Correction 2026-21686 | Final rule | Oct 23 |
| Airworthiness Directives; MD Helicopters, LLC Helicopters 2026-21664 | Final rule | Oct 23 |
| Airworthiness Directives; General Electric Company Engines 2026-21590 | Final rule | Oct 22 |
| Establishment of Class E Airspace; Havana, IL 2026-21565 | Final rule | Oct 22 |
| Revocation of Class E Airspace; Santa Elena, TX 2026-21564 | Final rule | Oct 22 |
| Establishment of Class E Airspace; DeKalb, IL 2026-21563 | Final rule | Oct 22 |
| 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 April 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.