Data / Federal rules / 2026-18848
Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
The Federal Aviation Administration published this final rule in the Federal Register on September 15, 2026. It took effect on October 20, 2026.
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What the agency says
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.
Key facts
- Document number
- 2026-18848
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- September 15, 2026
- Takes effect
- October 20, 2026
- Dates
- This AD is effective October 20, 2026.
- Docket
- Docket No. FAA-2026-4632; Project Identifier MCAI-2026-00036-A; Amendment 39-23455; AD 2026-17-11
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 2
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in September 2026
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.