As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 4055 - DURING TAKEOFF, CREW NOTED LANDING GEAR DISAGREE MESSAGE AND RIGHT MAIN NOT UP AND LOCKED. FOUND LARGE AMOUNTS OF ICE AND SNOW ON GEAR. REMOVED SAME. PERFORMED RETRACTION TEST IAW AMM 32-30-00-700-801. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)