# Airworthiness Directives; Bell Helicopter Textron, Inc., Helicopters
> **Rule** · Final rule. · Published 2013-10-01 · Effective 2013-11-05 · 78 FR 60182
## Document
- **Document number:** 2013-23099
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 60182
- **Publication date:** 2013-10-01
- **Effective date:** 2013-11-05
- **FAA docket:** Docket No. FAA-2008-0288
## Abstract

We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron, Inc. (Bell), Model 214B, 214B-1, and 214ST helicopters. This AD requires creating a component history card or equivalent record for certain pylon support spindle assemblies (spindles), establishes a new retirement life for spindles installed on Model 214B and 214B-1 helicopters, reduces the retirement life for spindles installed on Model 214ST helicopters, and requires replacing any spindle that has reached its airworthiness retirement life. This AD was prompted by three in-flight failures of the spindle that resulted in forced landings. The actions of this AD are intended to prevent failure of a spindle and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/10/01/2013-23099/airworthiness-directives-bell-helicopter-textron-inc-helicopters)
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