Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register March 17, 2026. Document 2026-05224. Updated Nov. 13, 2026.

What it does

The FAA proposes to adopt a new airworthiness directive (AD) for all MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) airplanes. This proposed AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products.

The Federal Aviation Administration's summary, as published in the Federal Register.

What it would change

1 part of Title 14 of the Code of Federal Regulations:

14 CFR 39

Before this

699 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

March 17, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Airbus SAS Airplanes
March 17, 2026 Final rule. Airworthiness Directives; Extra Aerobatic Aircraft GmbH Airplanes
March 16, 2026 Final rule. Airworthiness Directives; The Boeing Company Airplanes
March 16, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
March 16, 2026 Final rule; request for comments. Airworthiness Directives; Leonardo S.p.a. Helicopters
March 16, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
March 13, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; The Boeing Company Airplanes
March 13, 2026 Final rule. Airworthiness Directives; Airbus Helicopters

Since then:

What happens next and when

The FAA must receive comments on this proposed AD by May 1, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-05224
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	March 17, 2026
Comments close	May 1, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-2714

Source: the Federal Register (public domain). The document in the Federal Register