# Airworthiness Directives; Bell Textron Canada Limited Helicopters
> **Rule** · Final rule. · Published 2026-07-17 · Effective 2026-08-21 · 91 FR 44735
## Document
- **Document number:** 2026-14481
- **Category:** airworthiness
- **Manufacturer:** Bell Textron Canada Limited
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 91 FR 44735
- **Publication date:** 2026-07-17
- **Effective date:** 2026-08-21
- **FAA docket:** Docket No. FAA-2025-3436
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited (Bell) Model 407 helicopters. This 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 AD requires 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 issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/07/17/2026-14481/airworthiness-directives-bell-textron-canada-limited-helicopters)
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