airworthiness · Rule · Final rule; request for comments. · Published 2018-04-09 · Effective 2018-04-24 · 83 FR 15048
Document
Document number
2018-06946
Federal Register citation
83 FR 15048
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Airbus
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.