As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN GEAR DIDN'T COME UP WHEN LANDING GEAR WAS SELECTED UP. GEAR DISAGREE WARNING, (FLT#7360) CLOSED REMOVED ICE/SNOW BUILD UP AROUND THE LT MLG UPLOCK. PERFORMED NUMEROUS CYCLES OF THE LANDING GEAR EXTENSION/RETRACTION. OPS CHECK GOOD.