What was found
AFTER TAKEOFF WITH LANDING GEAR SELECTED UP, THE RIGHT MAIN RED RIGHT GEAR LIGHT STAYED ON ALONG WITH THE RED LIGHT IN THE GEAR HANDLE. FOLLOWED QRH, CYCLED CB B2 AND THEN CYCLED GEAR DOWN, WHICH INDICATED THREE GREEN, RETURNED TO DTW. MAINTENANCE INSPECTED AND FOUND EXCESSIVE ICE BUILD UP ON BOTH MAIN GEAR, BOTH MAIN GEAR AREAS CLEANED OF ICE. TEST FLIGHT PROVED SATISFACTORY. ALL CHECKS GOOD.