airworthiness · Rule · Final rule; request for comments. · Published 2026-04-24 · Effective 2026-05-11 · 91 FR 21952
Document
Document number
2026-08022
Federal Register citation
91 FR 21952
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Pilatus
Publication date
2026-04-24
Effective date
2026-05-11
FAA docket
Docket No. FAA-2026-3862
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Model PC-12/47G airplanes. This AD was prompted by a report that a brake shuttle valve (BSV) on a production airplane shuttled and isolated the brake line to the left- hand (LH) brake, which resulted in brake lockup. This AD requires replacement of the LH and right-hand (RH) brake pipe assemblies and also prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products.