As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON GEAR RETRACTION THE MLG LEVER WAS PLACED IN THE UP POSITION. RECEIVED A RED CAS MESSAGE FOR LG LEVER DISAGREE. HAD THREE RED DOWN INDICATORS. RAN THE MLG LEVER DISAGREE CHECKLIST, CYCLED THE HANDLE DOWN CAS MESSAGE CLEARED AND RETURNED FOR LANDING. REMOVED AND REPLACED THE LANDING GEAR CONTROL LEVER IAW AMM 32-31-01.