# Airworthiness Directives; Airbus SAS Airplanes
> **Rule** · Final rule; request for comments. · Published 2018-08-15 · Effective 2018-08-30 · 83 FR 40438
## Document
- **Document number:** 2018-17482
- **Category:** airworthiness
- **Manufacturer:** Airbus SAS
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 83 FR 40438
- **Publication date:** 2018-08-15
- **Effective date:** 2018-08-30
- **FAA docket:** Docket No. FAA-2018-0709
## Abstract

We are adopting a new airworthiness directive (AD) for all Airbus SAS Model A350-941 and -1041 airplanes. This AD was prompted by reports that electro-hydrostatic actuators (EHAs), installed on the inboard ailerons, elevators, and rudder, had degraded insulation resistance in the direct drive solenoid valve (DDSOV), due to incorrect sealing application. This AD requires a check of the insulation resistance of the DDSOV of each affected EHA and applicable corrective actions. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/08/15/2018-17482/airworthiness-directives-airbus-sas-airplanes)
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