Data / Federal rules / 2026-18746
Airworthiness Directives; Bombardier, Inc., Airplanes
The Federal Aviation Administration published this proposed rule in the Federal Register on September 14, 2026. Comments are due by October 29, 2026.
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What the agency says
The FAA proposes to adopt a new airworthiness directive (AD) for all Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD was prompted by reports of pitch upset upon autopilot disconnect following engine indication and crew alerting system (EICAS) messages that indicated that the autopilot was holding significant nose up or nose down forces on the elevator. This proposed AD would require revising the existing airplane flight manual (AFM) to change the procedure for the AP STAB TRIM FAIL (C) advisory message from a non- normal procedure to an emergency procedure to provide the flightcrew with emergency procedures to follow to stabilize airspeed in certain conditions. The FAA is proposing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-18746
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- September 14, 2026
- Comments due
- October 29, 2026
- Dates
- The FAA must receive comments on this proposed AD by October 29, 2026.
- Docket
- Docket No. FAA-2026-8808; Project Identifier MCAI-2025-01393-T
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 3
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in September 2026
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.