As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABNORMAL NOISE, VIBRATION IN CENTER MAIN CABIN FLOOR. NOTICEABLE VIBRATION FELT ON CLIMB. PASSENGER IN 9C NOTED A LOUD THUMPING AND VIBRATION BELOW FLOOR. ACCOMPLISHED THE REPLACEMENT OF THE RT OVERWING SERVICE PNL. REPLACED OVERWING SERVICE PNL HINGE PER MM.