Data / Federal rules / 2026-07736
Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
The Federal Aviation Administration published this final rule in the Federal Register on April 21, 2026. It took effect on May 26, 2026.
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What the agency says
The FAA is superseding Airworthiness Directive (AD) 2025-22- 02, which applied to certain MHI RJ Aviation ULC (type certificate previously held by Bombardier, Inc.) Model CL-600-2C10 (Regional Jet Series 700, 701 &702), CL-600-2C11 (Regional Jet Series 550), CL-600- 2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes. AD 2025-22-02 required repetitive torque checks of the horizontal stabilizer (H-stab) anti-yaw steady fitting block bolts. Since the FAA issued AD 2025-22- 02, it was determined that additional actions must be done to address the unsafe condition. This AD continues to require the actions in AD 2025-22-02 and requires replacing the H-stab anti-yaw steady fitting block hardware. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-07736
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- April 21, 2026
- Takes effect
- May 26, 2026
- Dates
- This AD is effective May 26, 2026.
- Docket
- Docket No. FAA-2026-0728; Project Identifier MCAI-2025-01823-T; Amendment 39-23310; AD 2026-08-02
- 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 April 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.