Data / Federal rules / 2025-20064
Airworthiness Directives; Bombardier, Inc., Airplanes
The Federal Aviation Administration published this final rule in the Federal Register on November 18, 2025. It took effect on December 23, 2025.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This AD was prompted by reports that the flap system on-board recorder (FSOBR) interfaces with the flap control unit signals and may result in the flap control unit monitors tripping, causing Flap Fail messages and possibly an uncommanded flap movement. This AD requires the disconnection of the FSOBR and prohibits future installation of this system. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-20064
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- November 18, 2025
- Takes effect
- December 23, 2025
- Dates
- This AD is effective December 23, 2025.
- Docket
- Docket No. FAA-2025-0483; Project Identifier MCAI-2024-00523-T; Amendment 39-23182; AD 2025-22-04
- 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 November 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.