# Airworthiness Directives; Airbus Helicopters (Type Certificate Previously Held by Eurocopter France) (Airbus Helicopters)
> **Rule** · Final rule. · Published 2014-03-05 · Effective 2014-04-09 · 79 FR 12373
## Document
- **Document number:** 2014-04285
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 79 FR 12373
- **Publication date:** 2014-03-05
- **Effective date:** 2014-04-09
- **FAA docket:** Docket No. FAA-2013-0351
## Abstract

We are adopting a new airworthiness directive (AD) for Airbus Helicopters Model AS350B, BA, B1, B2, B3, and D, and Model AS355E, F, F1, F2, and N helicopters with certain tail rotor (T/R) blades. This AD requires installing additional rivets to secure each T/R blade trailing edge tab (tab), and inspecting for evidence of debonding of the tab after the rivets are installed. This AD was prompted by reports of T/R blade tab debonding. The actions of this AD are intended to prevent loss of a T/R blade tab, which could result in excessive vibration and loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/03/05/2014-04285/airworthiness-directives-airbus-helicopters-type-certificate-previously-held-by-eurocopter-france)
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