airworthiness · Rule · Final rule. · Published 2026-06-09 · Effective 2026-07-14 · 91 FR 34752
Document
Document number
2026-11528
Federal Register citation
91 FR 34752
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Pilatus
Publication date
2026-06-09
Effective date
2026-07-14
FAA docket
Docket No. FAA-2026-2715
Abstract
The FAA is adopting 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 AD requires updating operational software and incorporating a pilot's operating handbook (POH) temporary revision (TR). This AD also prohibits the installation of affected software. The FAA is issuing this AD to address the unsafe condition on these products.