# Airworthiness Directives; Bell Helicopter Textron Inc., Helicopters
> **Rule** · Final rule. · Published 2018-08-30 · Effective 2018-10-04 · 83 FR 44207
## Document
- **Document number:** 2018-18735
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 44207
- **Publication date:** 2018-08-30
- **Effective date:** 2018-10-04
- **FAA docket:** Docket No. FAA-2018-0036
## Abstract

We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Inc. (Bell) Model 212, Model 412, and Model 412EP helicopters. This AD requires replacing the emergency flotation system (EFS) tube assembly. This AD was prompted by a report of an EFS tube assembly failure. The actions of this AD are intended to address an unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/08/30/2018-18735/airworthiness-directives-bell-helicopter-textron-inc-helicopters)
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