# Proposed AD FAA-2025-5035: Leonardo S.p.A. Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-04-03
- Products: Leonardo
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 4, 2025, 90 FR 55817
- Comments due: January 20, 2026
- Became: [AD 2026-04-03](https://openairdocs.org/ad/2026-04-03)
- Docket: FAA-2025-5035 (https://www.regulations.gov/docket/FAA-2025-5035, where comments are filed)
- Project: MCAI-2025-00707-R
- FR document: 2025-21899
- Official PDF: https://openairdocs.org/files/sha256/0c/a9/0ca96a8dd7e293bcf275661c320e477aef78e24df99fa477a07b97ef16022722 (from https://www.govinfo.gov/content/pkg/FR-2025-12-04/pdf/2025-21899.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/12/04/2025-21899/airworthiness-directives-leonardo-spa-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-21899-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-5035

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Leonardo S.p.A. Model AB139 and AW139 helicopters. This proposed AD was prompted by a report of interference found in the overhead panel area between the electrical cables and adjacent connectors. This proposed AD would require repetitively inspecting the overhead panel and, depending on the results, repairing or replacing the damaged wires. This proposed AD would also require modifying the overhead panel on certain helicopters. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Dec 4, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-21899, comments due Jan 20, 2026 (https://www.federalregister.gov/documents/2025/12/04/2025-21899/airworthiness-directives-leonardo-spa-helicopters)

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