Data / Federal rules / 2025-07274
Airworthiness Directives; Bell Textron Canada Limited Helicopters
The Federal Aviation Administration published this final rule in the Federal Register on April 28, 2025. It took effect on May 13, 2025. Comments closed on June 12, 2025.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited (BTCL) Model 505 helicopters. This AD was prompted by reports of possible chafing in certain locations between the basic and supplemental helicopter wiring and the structure. This AD requires repetitively inspecting the wire harnesses at certain locations for damage, and if any wire damage is found, repairing the damaged wire/bundles, as specified in a Transport Canada AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-07274
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- April 28, 2025
- Takes effect
- May 13, 2025
- Comments due
- June 12, 2025
- Dates
- This AD is effective May 13, 2025.
- Docket
- Docket No. FAA-2025-0740; Project Identifier MCAI-2024-00775-R; Amendment 39-23022; AD 2025-09-01
- 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 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.