Superseded. This AD was superseded by AD 2020-20-16. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2018-17-05
Effective 08/30/2018 · Published 08/15/2018
Airworthiness Directives; Airbus SAS Airplanes
Summary
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 DD…