# Proposed AD FAA-2026-2715: Pilatus Aircraft Ltd. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-12-01
- Products: Pilatus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 19, 2026, 91 FR 13240
- Comments due: May 4, 2026
- Became: [AD 2026-12-01](https://openairdocs.org/ad/2026-12-01)
- Docket: FAA-2026-2715 (https://www.regulations.gov/docket/FAA-2026-2715, where comments are filed)
- Project: MCAI-2025-01779-A
- FR document: 2026-05364
- Official PDF: https://openairdocs.org/files/sha256/88/60/8860d6acacf5ca0cad6255acd57cdaab02134c73e7e51952bf2dd1710e68ad48 (from https://www.govinfo.gov/content/pkg/FR-2026-03-19/pdf/2026-05364.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/03/19/2026-05364/airworthiness-directives-pilatus-aircraft-ltd-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-05364-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-2715

## Summary

The FAA proposes to adopt 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 proposed AD would require updating operational software and incorporating a pilot's operating handbook (POH) temporary revision. The proposed AD would also prohibit the installation of affected software. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 19, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-05364, comments due May 4, 2026 (https://www.federalregister.gov/documents/2026/03/19/2026-05364/airworthiness-directives-pilatus-aircraft-ltd-airplanes)

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