airworthiness · Rule · Final rule; request for comments. · Published 2018-08-15 · Effective 2018-08-30 · 83 FR 40438
Document
Document number
2018-17482
Federal Register citation
83 FR 40438
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Airbus SAS
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.