As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SNOW AND ICE CONTAMINATION OF LANDING GEAR CAUSING A FAILURE TO COMPLETE THE RETRACT CYCLE. SUSPECTED FAILED UPLOCK SWITCH AFTER GEAR WAS THAWED OUT. ALSO FOUND RIGHT LANDING LIGHT BRACKET MISALIGNED, SUSPECTED THAT THE DE-ICING PROCEDURE IN TORONTO CANADA, MISALIGNED THE LANDING LIGHT BRACKET TO BE CAUSING THE RIGHT LANDING GEAR, FAILURE TO COMPLETE THE RETRACTION CYCLE.