# Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters
> **Rule** · Final rule. · Published 2018-07-12 · Effective 2018-08-16 · 83 FR 32201
## Document
- **Document number:** 2018-14701
- **Category:** airworthiness
- **Manufacturer:** Bell Helicopter Textron Canada Limited
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 32201
- **Publication date:** 2018-07-12
- **Effective date:** 2018-08-16
- **FAA docket:** Docket No. FAA-2017-0757
## Abstract

We are adopting a new airworthiness directive (AD) for certain serial numbered Bell Helicopter Textron Canada Limited (BHTC) Model 429 helicopters. This AD requires marking a serial number on life-limited forward spars and actuator fitting assemblies. The actions of this AD are intended to prevent an unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/07/12/2018-14701/airworthiness-directives-bell-helicopter-textron-canada-limited-helicopters)
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