As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - AFTER TAKEOFF AND GEAR AND FLAP/SLAT RETRACTION (PROX SYSTEM MESSAGE). ON APPROACH IN PDX SLAT/FLAP EXTENSION NO CHANGE AFTER GEAR HANDLE SELECTED DOWN (PROX SYSTEM MESSAGE) WENT OUT. LANDED WITHOUT INCIDENT. REPLACED PSEU. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.