# Airworthiness Directives; Airbus Airplanes
> **Rule** · Final rule. · Published 2018-07-09 · Effective 2018-08-13 · 83 FR 31646
## Document
- **Document number:** 2018-14504
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 31646
- **Publication date:** 2018-07-09
- **Effective date:** 2018-08-13
- **FAA docket:** Docket No. FAA-2018-0270
## Abstract

We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 Freighter, A330-200, A330-300, A340-200, A340- 300, A340-500, and A340-600 series airplanes. This AD was prompted by a determination that a functional test to ensure that there is no blockage of vent pipes was not done on the trim tank of certain airplanes during production. This AD requires doing a trim tank functional test, and corrective actions if necessary. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/07/09/2018-14504/airworthiness-directives-airbus-airplanes)
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