As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT FULLY RETRACT. GEAR DISAGREE WARNING MESSAGE AFTER SELECTING GEAR UP NOSE GEAR REMAINED DOWN LOCKED. PERFORMED VISUAL INSPECTION OF MLG AND NLG ASSY FOUND EXTREME AMOUNTS OF ICE HAD ACCUMULATED ON ALL THREE GEAR OBSTRUCTING UPLOCKS REMOVED ICE AND PERFORMED OPS CHECK OPS CHECK GOOD.