As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A LOUD BANG OCCURRED FROM NOSE LANDING GEAR AREA DURING GEAR RETRACTION AFTER TAKEOFF. RECYCLED GEAR WITH SAME RESULTS. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. FOUND LEFT NOSE GEAR DOOR BRACKET BENT AND DAMAGE TO DOOR. REPLACED LEFT NOSE GEAR DOOR. RIGGED AND CYCLED DOOR SEVERAL TIMES. OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.