As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - PROXY SYSTEM FAULT 1 STATUS MSG ON GEAR RETRACTION, STATUS MESSAGE OUT WHEN GEAR DOWN 3 GREEN. RETURNED TO THE FIELD, LANDING UNEVENTFUL. FERRY TO PDX FOR REPAIRS. REPLACED LT PROX SENSOR HARNESS ASSY IAW AMM TASK 32-61-05-00-816 AND 32-61-05-400-804 AND TASK 32-61-05-400-816. REMOVED AND RE-INSTALLED NLG AFT DOOR PER TASK 32-22-05-400-801. OPS TEST OF EXTENSION AND RETRACTION GOOD, IAW TASK 32-30-00-710-801. OK FOR CONTINUED SERVICE.