# Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) Helicopters
> **Rule** · Final rule; request for comments. · Published 2014-06-10 · Effective 2014-06-25 · 79 FR 33054
## Document
- **Document number:** 2014-12724
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 79 FR 33054
- **Publication date:** 2014-06-10
- **Effective date:** 2014-06-25
- **FAA docket:** Docket No. FAA-2014-0334
## Abstract

We are publishing a new airworthiness directive (AD) for certain Airbus Helicopters (previously Eurocopter France) Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters, which was sent previously to all known U.S. owners and operators of these helicopters. This AD requires repetitively inspecting certain reinforcement angles of the rear structure to tailboom junction frame (reinforcement angles) for a crack, and repairing any cracked reinforcement angle. This AD is prompted by a report that cracks were found in the reinforcement angles on several AS355 helicopters. These actions are intended to detect a crack in the reinforcement angle, which if not corrected, could result in loss of the tailboom and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/06/10/2014-12724/airworthiness-directives-airbus-helicopters-previously-eurocopter-france-helicopters)
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