As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING CLIMB THE LANDING GEAR WOULD NOT RETRACT WHEN THE GEAR WAS SELECTED UP. RECEIVED A "LG/LEVER DISAGREE" MESSAGE ON THE EICAS AND THE THREE GEAR INDICATION BOXES WERE RED. WHEN THE GEAR WAS SELECTED DOWN, ALL GEAR INDICATIONS SHOWED DOWN AND LOCKED. THE CREW RETURNED TO KMKE AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RIGHT WOW NUMBER 1 PROXIMITY SWITCH TO BE INTERMITTENT. REPLACED THE RIGHT MAIN LANDING GEAR NUMBER 1 PROXIMITY SWITCH AND PERFORMED SEVERAL LANDING GEAR SWINGS. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.