AD 2018-07-12
Effective 04/24/2018 · Published 04/09/2018
Airworthiness Directives; Airbus Airplanes
Summary
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,…