As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- RETURNED TO FIELD, GEAR DISAGREE, MASTER WARNING-ACCOMPANIED BY PROX SYSTEM FAULT 1 STATUS MESSAGE. AIRCRAFT LANDED WITHOUT INCIDENT. ADJUSTED NOSE LANDING CENTER TARGETS. NO PARTS REPLACED. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.