# Airworthiness Directives; Agusta S.p.A Helicopters (Type Certificate Currently Held by AgustaWestland S.p.A) (Agusta)
> **Rule** · Final rule; request for comments. · Published 2014-06-03 · Effective 2014-06-18 · 79 FR 31857
## Document
- **Document number:** 2014-12719
- **Category:** airworthiness
- **Manufacturer:** Agusta S.p.A
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 79 FR 31857
- **Publication date:** 2014-06-03
- **Effective date:** 2014-06-18
- **FAA docket:** Docket No. FAA-2014-0336
## Abstract

We are adopting a new airworthiness directive (AD) for Agusta Model A109A, A109A II, A109C, A109E, A109K2, A109S, AW109SP, A119, and AW119 MKII helicopters. This AD requires inspecting and replacing certain part-numbered main rotor swashplate support nuts. This AD is prompted by a report of two cracked nuts found on an A109S helicopter. These actions are intended to detect a cracked nut and prevent failure of the main rotor system, and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/06/03/2014-12719/airworthiness-directives-agusta-spa-helicopters-type-certificate-currently-held-by-agustawestland)
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