As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, "LANDING GEAR LEVER DISAGREE" EICAS MESSAGE AFTER TAKEOFF THEN TRIED TO RETRACT LANDING GEAR. LANDING GEAR WOULD NOT RETRACT. QRH PROCEDURES PERFORMED. LANDED UNDER-WEIGHT. LANDING WAS UNEVENTFUL. MAINTENANCE PERFORMED A GENERAL VISUAL INSPECTION, INSTALLED LANDING GEAR PINS, AND MAINTENANCE FERRIED AIRCRAFT TO IAH FOR REPAIRS. IAH MAINTENANCE TROUBLESHOT AIRCRAFT AND REMOVED AND REPLACED THE LANDING GEAR CONTROL LEVER IN REFERENCE TO EMB145 32-32-04, SYSTEM OPS. CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.