# Proposed AD FAA-2025-0020: Leonardo S.p.a. Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-09-10
- Products: Leonardo
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 5, 2025, 90 FR 9011
- Comments due: March 24, 2025
- Became: [AD 2025-09-10](https://openairdocs.org/ad/2025-09-10)
- Docket: FAA-2025-0020 (https://www.regulations.gov/docket/FAA-2025-0020, where comments are filed)
- Project: MCAI-2024-00604-R
- FR document: 2025-02221
- Official PDF: https://openairdocs.org/files/sha256/bc/02/bc024fe9a7e2153a2e6b9fd2c5eab8dd592f91d2316f88646f6ffd4045500f6e (from https://www.govinfo.gov/content/pkg/FR-2025-02-05/pdf/2025-02221.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/02/05/2025-02221/airworthiness-directives-leonardo-spa-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-02221-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-0020

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model A109E, A109S, and AW109SP helicopters. This proposed AD was prompted by reports of incorrect installation of the motor (MTR) cables and the bonding braids connected to the engine fire extinguisher bottles. This proposed AD would require inspecting the cables and bonding braids installation and, depending on the results, accomplishing corrective action, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Feb 5, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-02221, comments due Mar 24, 2025 (https://www.federalregister.gov/documents/2025/02/05/2025-02221/airworthiness-directives-leonardo-spa-helicopters)

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