# Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters
> **Rule** · Final rule. · Published 2020-09-25 · Effective 2020-10-30 · 85 FR 60356
## Document
- **Document number:** 2020-21127
- **Category:** airworthiness
- **Manufacturer:** Bell Helicopter Textron Canada Limited
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 60356
- **Publication date:** 2020-09-25
- **Effective date:** 2020-10-30
- **FAA docket:** Docket No. FAA-2018-0334
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (BHTC) Model 429 helicopters. This AD requires repetitive inspections of certain cyclic and collective assembly bearings. This AD was prompted by reports that precipitation can lead to reduced effectiveness of the grease in the bearings. The actions of this AD are intended to address an unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/09/25/2020-21127/airworthiness-directives-bell-helicopter-textron-canada-limited-helicopters)
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