As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - NOSE DOOR AMBER ADVISORY LIGHT REMAINED ILLUMINATED FOR APPROX 30-45 SECS AFTER GEAR EXTENSION. LIGHT EXTINGUISHED AND THEN LANDED W/O FURTHER INCIDENT. NO ALT GEAR EXTENSION USED. VERIFIED NLG SSV COIL RESISTANCE, NO DEFECTS FOUND, VERIFIED ELECTRICAL SYS FOR NLG SSV, NO DEFECTS, ADJUSTED NLG NGDN2 PROX SENSOR. PERFORMED OP CHECK OF LANDING GEAR PRIMARY RETRACTION/ EXTENSION SYS OP CK GOOD. AIRCRAFT RETURNED TO SERVICE.