# Proposed AD FAA-2025-3436: Bell Textron Canada Limited Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-14-07
- Products: Bell Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 18, 2025, 90 FR 51602
- Comments due: January 2, 2026
- Became: [AD 2026-14-07](https://openairdocs.org/ad/2026-14-07)
- Docket: FAA-2025-3436 (https://www.regulations.gov/docket/FAA-2025-3436, where comments are filed)
- Project: MCAI-2024-00314-R
- FR document: 2025-20090
- Official PDF: https://openairdocs.org/files/sha256/da/94/da9486b36a4cf147e60c61d0119c5fbc2801200bfc8a9ab1d775c7918a035d40 (from https://www.govinfo.gov/content/pkg/FR-2025-11-18/pdf/2025-20090.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/11/18/2025-20090/airworthiness-directives-bell-textron-canada-limited-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-20090-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-3436

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Textron Canada Limited (Bell) Model 407 helicopters. This proposed AD was prompted by a report of a fractured pilot cyclic stick tube and subsequent findings of other pilot cyclic stick tubes with fatigue cracking. This proposed AD would require repetitively inspecting the pilot cyclic stick tube assembly for a crack and, depending on the results, repairing or replacing the pilot cyclic stick tube assembly. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 18, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-20090, comments due Jan 2, 2026 (https://www.federalregister.gov/documents/2025/11/18/2025-20090/airworthiness-directives-bell-textron-canada-limited-helicopters)

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