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 Jan. 21, 2026. Document 2026-01047. Updated Nov. 15, 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 proposed AD was prompted by a report that, during an engine start on the ground, the airplane battery voltage dropped to a value that resulted in an avionic system shutdown. This proposed AD would require incorporating a temporary revision into the existing pilot's operating handbook (POH) for the affected airplanes to provide operators with instructions for an enhanced engine start procedure. 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

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

Since then:

What happens next and when

The FAA must receive comments on this NPRM by March 9, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-01047
Action	Notice of proposed rulemaking (NPRM).
Agencies	Transportation Department; Federal Aviation Administration
Published	Jan. 21, 2026
Comments close	March 9, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-0015

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