What was found
ON APPROACH TO YNG RT MLG LIGHT DID COME ON AFTER SELECTING GEAR DOWN/TRANSIT LIGHT STILL ON. FOLLOWED QRH WHEN RECYCLED THE GEAR UP, THEN DOWN, THE RIGHT GEAR MADE A LARGE CLUNK NOISE. GEAR DOWN W/T 2/3 SECONDS THEN LT AND NLG SHOWED DOWN. ON POST FLIGHT NOTED GEAR DOOR DAMAGE. MAINTENANCE INSPECTED RT GEAR, FOUND RETRACT ACTUATOR BROKE AND MINOR SHEETMETAL DAMAGE TO GEAR DOOR. FERRIED A/C TO DTW FOR REPAIRED.