Data / Federal rules / 2025-05863
Airworthiness Directives; Bombardier, Inc., Airplanes
The Federal Aviation Administration published this proposed rule in the Federal Register on April 7, 2025. Comments closed on May 22, 2025.
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What the agency says
The FAA proposes to adopt a new airworthiness directive (AD) for all Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This proposed 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 proposed AD would require the disconnection of the FSOBR and prohibit future installation of this system. The FAA is proposing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-05863
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- April 7, 2025
- Comments due
- May 22, 2025
- Dates
- The FAA must receive comments on this proposed AD by May 22, 2025.
- Docket
- Docket No. FAA-2025-0483; Project Identifier MCAI-2024-00523-T
- 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
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