# Proposed AD FAA-2026-0015: Pilatus Aircraft Ltd. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-15-07
- Products: Pilatus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 21, 2026, 91 FR 2510
- Comments due: March 9, 2026
- Became: [AD 2026-15-07](https://openairdocs.org/ad/2026-15-07)
- Docket: FAA-2026-0015 (https://www.regulations.gov/docket/FAA-2026-0015, where comments are filed)
- Project: MCAI-2025-01528-A
- FR document: 2026-01047
- Official PDF: https://openairdocs.org/files/sha256/ea/63/ea63f633d4880c0e4034926c043731225ead9fc14cb5849b94c5f7307c36502a (from https://www.govinfo.gov/content/pkg/FR-2026-01-21/pdf/2026-01047.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/01/21/2026-01047/airworthiness-directives-pilatus-aircraft-ltd-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-01047-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-0015

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Pilatus Aircraft Ltd. (Pilatus) Model PC-12/47E airplanes. This proposed AD was prompted by a report that, during an engine start on the ground, the airplane battery voltage dropped to a value that resulted in an avionic system shutdown. This proposed AD would require incorporating a temporary revision into the existing pilot's operating handbook (POH) for the affected airplanes to provide operators with instructions for an enhanced engine start procedure. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jan 21, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-01047, comments due Mar 9, 2026 (https://www.federalregister.gov/documents/2026/01/21/2026-01047/airworthiness-directives-pilatus-aircraft-ltd-airplanes)

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