As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA CREW REPORTED ON TAKEOFF GEAR HANDLE WOULD NOT RETRACT PAST THE OFF POSITION. RETRACTED NORMAL WITH LOCK OVER-RIDE TRIGGER PULLED. FLIGHT RETURNED MIA LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED PROXIMITY SENSOR ELECTRONICS UNIT & LANDING GEAR HANDLE MODULE. SYSTEM GROUND CHECKED NORMAL OPERATION CLOSED.