As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BUF - FLT 0873 - AFTER TAKEOFF, THE RIGHT MAIN LANDING GEAR UNSAFE LIGHT ILLUMINATED WHEN THE GEAR WAS RETRACTED. THE GEAR WAS RECYCLED TWICE WITH THE SAME RESULTS. CREW RETURNED TO BUF WITHOUT INCIDENT. MAINTENANCE INSPECTED THE GEAR AND FOUND HEAVY ICE. THE GEAR WAS DE-ICED. BITE CHECK OF THE PROX BOX WAS ACCOMPLISHED. ALL CHECKED GOOD. (Z)