# Airworthiness Directives; Airbus SAS Airplanes
> **Rule** · Final rule. · Published 2020-07-30 · Effective 2020-09-03 · 85 FR 45767
## Document
- **Document number:** 2020-16484
- **Category:** airworthiness
- **Manufacturer:** Airbus SAS
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 45767
- **Publication date:** 2020-07-30
- **Effective date:** 2020-09-03
- **FAA docket:** Docket No. FAA-2020-0337
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A330-941 airplanes. This AD was prompted by a report that seven spoiler servo-controls (SSCs) lost hydraulic locking function due to a sheared seal on the blocking valve. This AD requires repetitive operational tests of the hydraulic locking function on each SSC and replacement if necessary, as specified in a European Union Aviation Safety Agency (EASA), which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/07/30/2020-16484/airworthiness-directives-airbus-sas-airplanes)
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