As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF & SELECTING LG UP, THE LG IN TRANSIT LIGHT REMAINED ILLUMINATED, & THE FLIGHT CREW COULD HEAR THAT THE GEAR WAS NOT UP & LOCKED. CREW DETERMINED THAT DUE TO THE PRESENT ICE ACCUMULATION THAT IT WAS AN EMER & ELECTED TO RETURN TO THE AIRPORT INSTEAD OF REMAINING IN THE MODERATE ICING CONDITIONS IN THAT CONFIGURATION. CREW SELECTED LG DOWN, OBTAINED ALL THREE GREEN GEAR DOWN INDICATIONS, & IN TRANSIT LIGHT EXTINGUISHED. ACFT LANDED WITHOUT FURTHER INCIDENT.