What was found
ON DEPARTURE FROM CLT, CREW HEARD A WHISTLING NOISE AND SUSPECTED AN ACCESS DOOR HAD BEEN LEFT OPEN. CREW RETURNED TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AIRCRAFT AND FOUND TREAD HAD COME OFF LEFT NOSE WHEEL TIRE, DAMAGING NOSE GEAR DOOR. MAINTENANCE REMOVED AND REPLACED LEFT AND RIGHT NOSE WHEEL ASSEMBLIES, REMOVED AND REPLACED NLG AFT DOOR, AND REPAIRED DENTS ON FUSELAGE. ALL WORK ACCOMPLISHED BY MAINTENANCE USING AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT RELEASED FOR SERVICE.