# Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters
> **Rule** · Final rule. · Published 2013-12-27 · Effective 2014-01-31 · 78 FR 78699
## Document
- **Document number:** 2013-30186
- **Category:** airworthiness
- **Manufacturer:** Bell Helicopter Textron Canada Limited
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 78699
- **Publication date:** 2013-12-27
- **Effective date:** 2014-01-31
- **FAA docket:** Docket No. FAA-2013-0603
## Abstract

We are adopting a new airworthiness directive (AD) for certain serial-numbered Bell Helicopter Textron Canada Limited (BHTC) Model 206L, 206L-1, 206L-3, and 206L-4 helicopters with a certain tailboom upper left attachment fitting (fitting). This AD requires inspecting the fitting for a crack and other conditions. This AD was prompted by the manufacturer revising and extending the 100 hour time-in-service (TIS) inspection requirements for the fitting. The actions of this AD are intended to detect a crack, loose rivet, corrosion, or any other damage, which could lead to loss of the tailboom and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/12/27/2013-30186/airworthiness-directives-bell-helicopter-textron-canada-limited-helicopters)
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