# Airworthiness Directives; Bell Helicopter Textron Helicopters
> **Rule** · Final rule; request for comments. · Published 2013-02-12 · Effective 2013-02-27 · 78 FR 9793
## Document
- **Document number:** 2013-02899
- **Category:** airworthiness
- **Manufacturer:** Bell Helicopter Textron
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 78 FR 9793
- **Publication date:** 2013-02-12
- **Effective date:** 2013-02-27
- **FAA docket:** Docket No. FAA-2013-0098
## Abstract

We are superseding an existing airworthiness directive (AD) for the Bell Helicopter Textron (Bell) Model 212 helicopters and adopting requirements for Bell Model 204B, 205A, 205A-1, 205B and 210 helicopters with certain part-numbered main rotor hub inboard strap fittings (fittings). This AD requires magnetic particle inspecting (MPI) the fittings for a crack, and if a crack exists, replacing the fittings with airworthy fittings. This AD is prompted by reports of additional cracked fittings and the determination that additional part-numbered fittings may not have been manufactured in accordance with approved manufacturing processes and controls. These actions are intended to identify a crack in the fitting, which may lead to the fitting's failure, loss of a main rotor blade, and subsequent loss of helicopter control.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/02/12/2013-02899/airworthiness-directives-bell-helicopter-textron-helicopters)
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