As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF UPON GEAR RETRACTION, THE LEFT MAIN GEAR RED LIGHT REMAINED ON. PROCEEDED WITH COCKPIT OPERATING MANUAL PROCEDURE. VISUALLY CHECKED GEAR WHICH APPEARED DOWN. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT MAIN LANDING GEAR. OPERATIONAL CHECK GOOD.