# Airworthiness Directives; Agusta S.p.A. (Agusta) Helicopters
> **Rule** · Final rule. · Published 2014-12-12 · Effective 2015-01-16 · 79 FR 73801
## Document
- **Document number:** 2014-28913
- **Category:** airworthiness
- **Manufacturer:** Agusta S.p.A. (Agusta)
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 79 FR 73801
- **Publication date:** 2014-12-12
- **Effective date:** 2015-01-16
- **FAA docket:** Docket No. FAA-2008-0256
## Abstract

We are revising Airworthiness Directive (AD) 2008-14-02 for Agusta Model AB139 and AW139 helicopters. AD 2008-14-02 required inspecting the fuselage frame to detect fatigue cracks which could lead to structural failure and subsequent loss of control of the helicopter. Since we issued AD 2008-14-02, Agusta developed a frame reinforcement modification, which supports extending the interval for inspecting the fuselage frame for a fatigue crack. This new AD requires inspecting the fuselage frame for a crack and reduces the applicability from AD 2008- 14-02 to exclude helicopters with the frame reinforcement modification. The actions of this AD are intended to detect a fatigue crack that could result in failure of the fuselage frame and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/12/12/2014-28913/airworthiness-directives-agusta-spa-agusta-helicopters)
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