As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA-DEPARTING FROM BZN. RETRACTED LANDING GEAR. LT MAIN GEAR UNSAFE AND LT GEAR DOOR LIGHT REMAINED ILLUMINATED. GEAR HANDLE REMAINED ILLUMINATED. CYCLED PER CHECKLIST. ALL LIGHTS WENT OUT. TO INCLUDE RIGHT GEAR UNSAFE AND GEAR DOOR ON INTERMITTENTLY. REMOVED AND REPLACED NR 1 MAIN LANDING GEAR UPLOCK PROXIMITY SENSOR HARNESS. OPERATIONAL CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.