Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register March 19, 2026. Document 2026-05364. Updated Nov. 13, 2026.

What it does

The FAA proposes to adopt a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Model PC-12/47E airplanes. This AD was prompted by a report of the stall warning protection system (SWPS) engaging when not appropriate. This proposed AD would require updating operational software and incorporating a pilot's operating handbook (POH) temporary revision. The proposed AD would also prohibit the installation of affected software. 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

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

March 19, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; General Electric Company Engines
March 18, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; The Boeing Company Airplanes
March 17, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
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

Since then:

What happens next and when

The FAA must receive comments on this NPRM by May 4, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-05364
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	March 19, 2026
Comments close	May 4, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-2715

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