As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH INTO DTW, GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS EXTENDED FOR LANDING. EXECUTED GO-AROUND PROCEDURES AND PERFORMED EMERGENCY EXTENSION PROCEDURES. REPLACED LEFT MAIN GEAR DOOR UPLOCK SWITCH. ALSO, REPLACED THE LEFT AND RIGHT GEAR DOOR SKIDS DUE TO DAMAGE ON LANDING. OPERATIONAL CHECK GOOD ON DOOR CYCLE. AIRCRAFT RETURNED TO SERVICE.