AD 2026-17-11: Pilatus Aircraft Ltd. Airplanes

What the FAA requires

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.

Read the full directive on the Federal Register →

Applicability

This AD applies to Pilatus Aircraft Ltd. Model PC-24 airplanes, certificated in any category, as identified in European Union Aviation Safety Agency AD 2026-0008, dated January 15, 2026 (EASA AD 2026-0008). (d) Subject Joint Aircraft System Component (JASC) Code 3040, Windshield/Door Rain/Ice Removal. (e) Unsafe Condition This AD was prompted by a report that a solid-state relay used in the left-hand windshield heating system may allow reverse current flow when in the OFF position. The FAA is issuing this AD to prevent failure of the emergency windshield heat function. The unsafe condition, if not addressed, could result in a failure of the emergency windshield heat function, which could res

Part numbers this directive names

This directive does not name specific part numbers in its text; it applies by aircraft model. See the applicability above and the manufacturer's service bulletin it references.