As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) GEAR DISAGREE AND MASTER WARNING UPON GEAR RETRACTION. FOLLOWED QRH AND MESSAGE CLEARED. DECLARED EMERGENCY AND LANDED WITHOUT INCIDENT. MAINTENANCE DEFERRED GEAR EXTENSION AND RETRACTION SYSTEM. CORRECTIVE ACTION: REPLACED THE LANDING GEAR LEVER (TC# 20190425030)