airworthiness · Rule · Final rule. · Published 2026-09-15 · Effective 2026-10-20 · 91 FR 58364
Document
Document number
2026-18848
Federal Register citation
91 FR 58364
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Pilatus
Publication date
2026-09-15
Effective date
2026-10-20
FAA docket
Docket No. FAA-2026-4632
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Model PC-24 airplanes. This AD was prompted by a report that a solid-state relay (SSR) used in the left-hand (LH) windshield heating system may allow reverse current flow when in the OFF position. This AD requires modification of the airplane and replacement of the affected SSR with a serviceable part. The FAA is issuing this AD to address the unsafe condition on these products.