As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, LT GEAR NOT INDICATING UP AND LOCKED. RED LIGHT ILLUMINATED AND GEAR HANDLE LIGHT ILLUMINATED. AIR RETURN TO MSP. MAINTENANCE FOUND ICE COMPLETELY AROUND DOOR UPLOCK LATCH AND SURROUND DOOR WAS UNABLE TO LATCH CLOSED. REMOVED ICE, NO DAMAGE NOTED AT DOOR OR LATCH NOTED.