As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 1840 NAS TO CLT. THE FLIGHT ATTENDANTS REPORTED A LOUD NOISE FROM OVERHEAD NEAR SEAT ROW 4, AND A BURNT RUBBER ODOR. MAINTENANCE FOUND OVERHEAD DUCT CRACKED AT ROW 9 AND ROW 14. REPAIRED CRACKS. NO LEAKS NOTED. NO SMELL NOTED. OK FOR SERVICE.