# Airworthiness Directives; Airbus Airplanes
> **Rule** · Final rule; request for comments. · Published 2018-04-09 · Effective 2018-04-24 · 83 FR 15048
## Document
- **Document number:** 2018-06946
- **Category:** airworthiness
- **Manufacturer:** Airbus
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 83 FR 15048
- **Publication date:** 2018-04-09
- **Effective date:** 2018-04-24
- **FAA docket:** Docket No. FAA-2018-0269
## Abstract

We are adopting a new airworthiness directive (AD) for all Airbus Model A350-941 airplanes. This AD requires performing repetitive station position pick-off unit (SPPU) calibration tests, and applying the corresponding airplane fault isolation if necessary. This AD was prompted by a report indicating malfunctions of the SPPU and failures of the internal wiring due to water ingress via certain electrical connectors, inducing subsequent icing during flight. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/04/09/2018-06946/airworthiness-directives-airbus-airplanes)
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