As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX-ORD - AIR TURN BACK, EICAS MESSAGE GEAR DOORS AND GEAR DISAGREE DIPLAYED WITH GEAR HANDLE UP. DOOR AND GEAR AMBER LIGHTS ILLUMINATED ALL GREEN. DOWN LIGHT EXTINGUISHED WITH GEAR HANDLE OFF. RIGHT GEAR DOWN LIGHT ILLUMINATED. REMOVED AND REPLACED RIGHT MLG ACTUATOR PER BOEING MM REF 32-32-01. PERFORMED GEAR SWING SEVERAL TIMES AND OPS CHECKED GOOD. (M)