# Airworthiness Directives; Airbus SAS Airplanes
> **Rule** · Final rule. · Published 2018-11-14 · Effective 2018-12-19 · 83 FR 56702
## Document
- **Document number:** 2018-24683
- **Category:** airworthiness
- **Manufacturer:** Airbus SAS
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 56702
- **Publication date:** 2018-11-14
- **Effective date:** 2018-12-19
- **FAA docket:** Docket No. FAA-2018-0758
## Abstract

We are adopting a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 airplanes. This AD was prompted by a review of the Airbus A350 structure design principles database for type definition that revealed that the balancer fitting part, installed on the tail cone, on a certain frame (FR) has several corrosion-resistant stainless steel nuts that do not meet the requirements for protection against corrosion. This AD requires application of a new additional overcoat sealant and elastic varnish on the affected nuts and fasteners. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/11/14/2018-24683/airworthiness-directives-airbus-sas-airplanes)
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